Breast Augmentation, Mastopexy Flashcards
A 35-year-old woman with tuberous breast deformity is scheduled to undergo augmentation/mastopexy. A smooth, round, cohesive gel implant will be used. This patient is at higher risk for which of the following complications when compared with augmentation/mastopexy performed on a patient without a tuberous breast?
A) Capsule contracture
B) Double bubble
C) Hematoma
D) Nipple-areola depigmentation
E) Rippling
The correct response is Option B.
The classic features of a tuberous breast deformity include a constricted base with a high inframammary crease and herniation of breast parenchyma into the nipple-areola complex producing a large-diameter areola. Variable extent of micromastia is associated as well as breast asymmetry. When a patient has a high and tight inframammary crease, this crease must be released to accommodate an implant and allow correction of the deformity. If this native crease does not fully expand, then a double bubble will occur. Over time, the lower pole skin stretches in response to the implant and this double bubble often improves spontaneously. The incidence of capsule contracture, hematoma, nipple-areola depigmentation, and rippling should be similar to a patient who undergoes periareolar augmentation/mastopexy without a tuberous breast.
A 36-year-old woman is evaluated because of spontaneous galactorrhea 6 days after undergoing augmentation mammaplasty. Which of the following factors most likely contributed to this outcome?
A) Inframammary placement of the incision
B) Subglandular versus dual-plane position of the device
C) Surgical interruption of the intercostal nerves
D) Use of silicone versus saline breast implants
The correct response is Option C.
Although no one knows exactly what leads to postoperative galactorrhea, it is observed to occur more often in parous women and theorized to occur due to a combination of factors which simulate suckling or change in the innervation of the chest wall and nipple-areola complex. This would include increased tissue pressure related to the implant placement and interruption of intercostal nerves. No relationship has been identified between incision placement (peri-areolar, inframammary, transaxillary, or even peri-thelial) and postoperative galactorrhea. Similarly no relationship has been identified between device positioning (dual-plane, subglandular, and submuscular) and postoperative galactorrhea. Again, no relationship has been observed in implant type, saline versus silicone, and postoperative galactorrhea.
A 45-year-old woman comes to the office for consultation regarding augmentation mammaplasty. She wears a size 32B brassiere; height is 5 ft 3 in (160 cm), and weight is 130 lb (59 kg). Subglandular placement of saline prostheses is planned. Which of the following is the primary advantage of using saline rather than silicone prostheses in this patient?
A)Easier detection of rupture
BLess capsular formation
C)Less wrinkling
D)Lighter prosthesis
E)Lower risk of leakage
The correct response is Option A.
Although both silicone and saline prostheses rupture at a similar rate, a saline rupture is more easily detectable because the saline is resorbed in the body. The deflated breast will be smaller in volume. Subtle changes, such as decreased upper pole fullness or increased softness, may be the only clues to silicone rupture on physical examination. Ultrasonography or MRI may be needed to confirm the diagnosis.
Saline prostheses are firmer than silicone; they are more likely to be palpable than silicone prostheses as well. Neither prosthesis has been associated with systemic immune syndromes, and both prostheses produce capsular contracture, wrinkling, and leakage.
Which of the following is the most common complication of periareolar mastopexy?
(A) Dehiscence
(B) Excessive breast projection
(C) Nipple discharge
(D) Recurrent ptosis
(E) Widening of the areola
The correct response is Option E.
Widening of the areola is the most common complication following periareolar mastopexy. Techniques developed to minimize the occurrence of areolar dilation include the use of nonresorbable purse-string sutures and creation of an excessively small areola at the time of surgery to compensate for postoperative widening.
Less common complications include dehiscence and recurrent ptosis. Excessive projection is rarely seen with periareolar mastopexy; flattened or globular breast shapes are more commonly reported. Nipple discharge is not associated with mastopexy.
A 26-year-old woman comes to the office for consultation regarding right mammary hypoplasia and a superiorly displaced nipple-areola complex. Examination shows a depressed right chest wall. The pectoralis major muscle is anatomically normal. Which of the following is the most likely diagnosis?
A ) Anterior thoracic hypoplasia
B ) Pectus carinatum
C ) Pectus excavatum
D ) Poland syndrome
E ) Sternal cleft
The correct response is Option A.
The most likely diagnosis in this patient is anterior thoracic hypoplasia. Anterior thoracic hypoplasia is a syndrome composed of an anterior chest wall depression resulting from posteriorly displaced ribs, hypoplasia of the ipsilateral breast, and a superiorly displaced nipple-areola complex. The sternum is in normal position, and the pectoralis major muscle is normal.
Pectus excavatum is the most common congenital chest wall abnormality in which the ribs and sternum form abnormally, resulting in a concave anterior chest wall. Typically, the lower third of the sternum is involved. In the most severe form, pectus excavatum can present with the sternum adjacent to the vertebral bodies associated with cardiopulmonary abnormalities. In contrast, pectus carinatum is a chest wall deformity in which the sternum and ribs are forced anteriorly, creating the appearance of a €œpigeon €™s chest. € Pectus excavatum and carinatum have sternal involvement, but they do not involve changes in the development of the breast.
Poland syndrome is a congenital anomaly characterized by a number of unilateral findings. The classic features of Poland syndrome include absence of the sternal head of the pectoralis major, hypoplasia and/or aplasia of the breast or nipple, deficiency of subcutaneous fat and axillary hair, abnormalities of the rib cage, and upper extremity anomalies. In its simplest form, Poland syndrome may present with only mild hypoplasia of the breast and lateral displacement of the nipple. Complex presentations of Poland syndrome include hypoplasia or aplasia of the chest wall musculature (serratus, external oblique, pectoralis minor, and latissimus dorsi muscles) or total absence of the anterolateral ribs with herniation of the lung.
Sternal cleft is a rare congenital defect of the anterior chest wall resulting from a failure of midline fusion of the sternum. Depending on the degree of clefting, there are complete and incomplete forms. The sternal cleft is clinically significant because of the potential for the lack of protection to the heart and great vessels. Sternal clefts are not associated with aplasia or hypoplasia of the breast.
A 35-year-old woman comes to the office for consultation regarding augmentation mammaplasty. A preoperative mammogram is most indicated if the patient’s history includes which of the following?
A ) A grandmother diagnosed with breast cancer at age 73 years
B ) A mother diagnosed with breast cancer at age 45 years
C ) Personal history of breast cysts
D ) Personal history of fibroadenoma
E ) A sister diagnosed with ovarian cancer
The correct response is Option B.
Among the risk factors for breast cancer, family history is the most significant. It can be divided into two broad categories: familial breast cancer, which most likely results from changes in multiple low penetrance genes coupled with environmental influences, and hereditary breast cancer, which results in high penetrance mutation in a single gene.
Familial breast cancer is relatively common and conveys a modest elevation in risk compared with genetic breast cancer, which is rare but associated with high risk.
A family history of breast cancer has been demonstrated to increase the risk of breast cancer in multiple studies. Breast cancer in a first-degree relative increases the risk of breast cancer, and that risk decreases as the age of the affected relative increases (ie, it is a 2.3 relative risk factor if the affected relative is under 50 years of age; it is 1.8 if she is over 50). Individuals whose first-degree relatives have bilateral breast cancer have an increased risk of 5.5 times the normal population.
A 16-year-old girl is referred to the clinic by her pediatrician for correction of breast asymmetry. The patient reports that her right breast has always been smaller. Physical examination shows mildly shortened right fingers and a Tanner III right breast. Examination shows that the left breast is Tanner IV and no masses. Which of the following is the Mathes and Nahai Classification of the muscle most likely involved in this congenital disorder?
A) Type I
B) Type II
C) Type III
D) Type IV
E) Type V
The correct response is Option E.
The pectoralis major has a dual blood supply from both a dominant primary pedicle (pectoral branches of the thoracoacromial artery) and secondary segmental perforators (internal mammary/thoracic perforators).
The absence of the pectoralis major muscle and associated hand deformity is pathognomonic for Poland syndrome. The etiology is unclear but suspected due to vascular interruption during embryogenesis. The diagnosis is often delayed until puberty when asymmetric breast development is noted. Brachydactyly, syndactyly, or ectrodactyly are common and can present with various severity.
Type I flaps have a single dominant blood supply (e.g., rectus femoris or gastrocnemius muscles). Type II flaps have a dominant and minor vascular pedicle (e.g., gracilis or soleus muscles). Type III flaps have 2 dominant pedicles (e.g., pectoralis minor, rectus abdominis and serratus muscles). Type IV flaps only have segmental blood supply (e.g., sartorius or tibialis anterior muscles).
A 36-year-old woman comes to the office for consultation regarding €œsagging € breasts 10 years after undergoing bilateral augmentation mammaplasty with subglandular placement of saline prostheses. Physical examination shows Grade 2 ptosis and an axillary scar. A mastopexy with capsulotomy and replacement of prostheses is planned. Which of the following pedicles is LEAST likely to preserve the blood supply to the nipple-areola complex?
A ) Inferior
B ) Medial
C ) Superior
D ) Superolateral
E ) Superomedial
The correct response is Option A.
Secondary mastopexy in the augmented patient can be particularly hazardous. In addition to scars from prior surgery, the soft-tissue envelope surrounding the prosthesis frequently becomes attenuated. Tebbetts observed that the €œconsequences of excessively large breast implants include ptosis, tissue stretching, tissue thinning, inadequate soft-tissue cover, [and] …subcutaneous tissue atrophy. € Gravity causes most soft-tissue thinning and atrophy to eventually occur in the inferior pole of the augmented breast. Therefore, in secondary mastopexy augmentation procedures, blood supply to the nipple-areola complex should generally rely on a medial, superior, superomedial, or superolateral pedicle.
A 23-year-old woman comes to the office because she is interested in augmentation mammaplasty. Physical examination shows a right-sided sunken anterior chest wall, hypoplasia of the right breast with a superiorly placed nipple-areola complex, normal pectoralis muscle, and normal sternal position. This patient most likely has which of the following congenital deformities?
A) Amastia
B) Anterior thoracic hypoplasia
C) Pectus carinatum
D) Pectus excavatum
E) Poland syndrome
The correct response is Option B.
Amastia refers to an uncommon developmental condition in which the breast and nipple are absent. Some women are immediately given the diagnosis of Poland syndrome or pectus deformity when they exhibit abnormalities of the anterior chest wall. Poland syndrome involves an abnormal pectoralis muscle while pectus deformities do not. Pectus deformities involve alteration in the appearance or location of the sternum and its costal attachments. Another less commonly realized diagnosis is that of anterior thoracic hypoplasia in which patients share the same characteristics of unilateral sunken anterior chest wall, hypoplasia of the breast, superiorly placed nipple-areola complex, normal pectoralis muscle, and normal sternal position.
Which of the following proteins has been implicated in the pathogenesis of breast implant capsule formation?
(A) Albumin
(B) Fibrinogen
(C) Complement
(D) IgG
The correct response is Option B.
The surface-bound protein fibrinogen has been implicated in the generation of inflammatory responses to biomaterials (ie, implants); early protein absorption of these biomaterials mediates the foreign body response. Understanding the intricate pathways that result in fibrinogen absorption and its subsequent inflammatory response, leading to capsule formation, may aid in the prevention and management of breast implant capsular contracture.
Other dominant proteins in the body, such as albumin, complement, and immunoglobulin G (IgG), have not been shown to play a critical role in capsule formation resulting from foreign body reaction.
A 26-year-old woman who underwent augmentation mammaplasty six months ago comes to the office because she has numbness of the right nipple. The most likely cause is injury to which of the following intercostal nerves?
A ) Second
B ) Third
C ) Fourth
D ) Fifth
E ) Sixth
The correct response is Option C.
According to Courtiss and Goldwyn, the fourth intercostal nerve is the most important nipple innervator.
The anterior cutaneous branches of the second through sixth intercostal nerves provide the medial innervation. The anterior rami of the lateral cutaneous branches of the third through sixth intercostal nerves provide the lateral innervation.
It has been demonstrated that the lateral cutaneous branches of the third through fifth intercostal nerves and the anterior cutaneous branches of the second through fifth intercostal nerves all contribute to nipple supply. The lateral cutaneous branch of the fourth intercostal nerve has been traced into the nipple and found to have two branches. The deep branch passes inferolaterally on the pectoralis major fascia before coursing up into the areola, whereas the superficial branch passes up through the superficial parenchyma.
Prior to breast augmentation, management of milky discharge in a regularly menstruating woman should include which of the following?
(A) Observation
(B) Massage
(C) Measurement of serum prolactin level
(D) Administration of antibiotics
(E) Ovarian biopsy
The correct response is Option C.
Although breast discharge is rare in regularly menstruating women who have never been pregnant, it has been shown to occur in 25% of women who have been pregnant in the past. Complete evaluation of galactorrhea should include measurement of the serum level of prolactin (a lactogenic hormone required for milk production), thyroid function studies to rule out hypothyroidism, and a history of all medications, as tricyclic antidepressants and fluoxetine have been shown to contribute to breast discharge. Women who have increased serum prolactin levels should then undergo MRI evaluation to rule of the possibility of pituitary tumor. According to a series of four studies involving more than 500 patients with galactorrhea, a pituitary tumor was the underlying cause in 25%; in contrast, 50% of those studied had idiopathic causes. Appropriate management of idiopathic galactorrhea includes administration of bromocriptine to suppress the release of prolactin.
Observation is inadequate management because of the risk for pituitary tumor in these patients. Breast massage is not appropriate and will instead maintain or even initiate galactorrhea in women with prior pregnancies. Because galactorrhea is not associated with infection, antibiotics should not be administered; however, if the discharge is bloody or has brown or green discoloration, the patient should be evaluated for possible infection or tumor. Ovarian biopsy is only indicated if evaluation shows ovarian pathology.
A 30-year-old woman undergoes augmentation mammaplasty with silicone gel prostheses. During the procedure, smooth prostheses are positioned subglandularly. The subglandular placement increases this patient=s risk of which of the following complications?
(A) Capsular contracture
(B) Double-bubble appearance
(C) Infection of the implant
(D) Rippling of the implant
(E) Rupture of the implant
The correct response is Option A.
Capsular contracture remains one of the main drawbacks to the use of silicone breast prostheses. Submuscular placement is a well-established method of reducing the rate of contracture. The introduction of implant-surface texturing in the late 1980s has greatly reduced the contracture rate for prostheses placed subglandularly.
Development of capsular contracture is clearly more common in the first two years after subglandular implantation, regardless of the implant type. The large difference in the rate of contracture between textured and smooth prostheses in the subglandular position seems to be negligible in subpectoral placement; both types of implant have low contracture rates.
The causes of capsular contracture and the effect of surface texturing and implant position in reducing its incidence are still not clear. Capsule formation is a normal response to the introduction of foreign material and, like most physiologic responses, varies by degree and timing. Additionally, there are general patient factors and local breast factors. The literature suggests that capsule response may be altered by other factors such as infection, diffusion of silicone gel, and smoking.
The introduction of surface texturing alters the capsule response. Texturing may produce a more disorganized collagen pattern in the capsule. It has been suggested that subpectoral prostheses have a lower rate of capsular contracture, regardless of surface texturing, because of the massaging action of the overlying pectoralis major.
A 47-year-old woman is referred by her primary care physician to evaluate a suspected intracapsular rupture of her prosthesis on the left identified during routine mammography. She underwent primary augmentation mammaplasty with subglandular placement of single-lumen silicone breast prostheses in 1990. Physical examination shows a smaller breast on the left. An MRI is requested. Which of the following findings on MRI is most likely to confirm the diagnosis?
A ) Double wall sign
B ) Linguine sign
C ) Multiple echogenic lines
D ) Reverse double-lumen sign
E ) Snowstorm sign
The correct response is Option B.
MRI, mammography, ultrasonography, and CT scanning have all been used to diagnose silicone breast prosthesis rupture.
Although each modality has specific strengths and weaknesses that may make a particular modality the study of choice for an individual patient, MRI of silicone breast prostheses reports the highest sensitivity and specificity for detection of silicone prosthesis rupture.
Of the options listed, only the linguine sign is consistent with intracapsular silicone prosthesis rupture and represents the prosthesis shell floating in free silicone gel.
The double wall sign, also known as Rigler sign, is a radiographic sign of pneumoperitoneum.
Snowstorm sign and echogenic lines may be seen on ultrasound examination.
Water suppression or a reverse double-lumen sign would not be expected findings in a single-lumen device but may have a role in double-lumen devices.
A 53-year-old woman comes to the office because of unilateral swelling of the breast 5 years after undergoing subglandular augmentation mammaplasty. A diagnosis of anaplastic large T-cell lymphoma (ALCL) is established. Which of the following is most likely to represent the progression of this patient’s disease when compared with a patient who has ALCL but no breast prostheses?
A) A more aggressive clinical course and a poorer prognosis
B) A more aggressive clinical course but a more favorable prognosis
C) A more indolent clinical course and a more favorable prognosis
D) A more indolent clinical course but a poorer prognosis
E) The same clinical course and prognosis
The correct response is Option C.
Anaplastic large T-cell lymphoma (ALCL) is a rare (1 per million) non-Hodgkin lymphoma that has been reported in women with and without breast prostheses. However, increasing case reports suggest an association with breast prostheses, although direct causation has not been established. ALCL associated with breast prostheses has malignant cells infiltrating the periprosthetic capsule or in the periprosthetic fluid collection. It is associated with both silicone- and saline-filled prostheses and seen in patients who have had prostheses for augmentation mammaplasty as well as breast reconstruction. Although the cytology is the same between ALCL associated with and without breast prostheses, ALCL that develops around prostheses tend to have an indolent clinical course and favorable prognosis when compared with systemic ALCL.
A 36-year-old woman is being evaluated 17 years after undergoing augmentation mammaplasty with silicone gel implants. On examination, the implants are soft and minimally palpable; she reports no complications. This patient is at risk for which of the following?
(A) Implant rupture
(B) Increased silicon levels in breast milk
(C) Rheumatoid arthritis
(D) Scleroderma
(E) Silicone synovitis
The correct response is Option A.
This 36-year-old woman is at risk for implant rupture, which has been shown in recent studies to increase proportionately with the age of the implant. One retrospective study determined the mean age of implant rupture to be 13.4 years. MRI is most effective for assessing potential implant rupture, which in one study was reported in as many as 71% of implant patients. Another study showed that 50% of patients who had had implants for seven to 10 years showed evidence of rupture or hemorrhage on MRI.
Although attempts have been made to associate silicone gel implants to the onset of rheumatoid symptoms in children who were breast-fed, one study showed no difference in silicone levels measured in breast milk in women with implants versus controls. In addition, several large epidemiologic studies have shown no link between silicone gel implants and the subsequent development of either rheumatologic (ie, rheumatoid arthritis) or connective tissue (ie, scleroderma) diseases. Silicone synovitis occurs in patients who have silicone joint prostheses, but not in patients with silicone gel breast implants.
Which of the following is the most likely site of ectopic breast tissue in a patient with ectopic polymastia?
A ) Axilla
B ) Costal margin
C ) Dorsal thigh
D ) Pubis
E ) Vulva
The correct response is Option C.
Polymastic breast tissue can be categorized either as accessory or ectopic. Ectopic breast tissue is found outside the milk line at such sites as the scalp, ear, back, shoulder, epigastrium, and posterior or dorsal thigh.
Accessory polymastia occurs along the milk line. Greater than 90% of accessory breast tissue is localized to the chest region. The axilla, groin, vulva, and medial thigh may also be affected as well as regions above or below the normal breast, such as the costal margin.
Which of the following is the most common complication associated with “donut” mastopexy?
A) Boxy breast shape
B) Increased distance from nipple to inframammary fold
C) Loss of nipple sensation
D) Nipple necrosis
E) Widening of the areola
The correct response is Option E.
A common complication of the “donut” (circumareolar) mastopexy is widening of the areola. This can be minimized by using a Gore-Tex suture placed using the “wagon-wheel” technique and limiting the amount of skin resected to a 2:1 ratio of outside diameter to areolar diameter.
Boxy breast shape is associated with Wise pattern mastopexy. Nipple necrosis is associated with combined augmentation and mastopexy. Increased distance from the nipple to the inframammary fold is associated with vertical mastopexies in which the height of the medial and lateral pillars is too tall. Loss of nipple sensitivity is unusual because there is no parenchymal resection.
A 25-year-old woman comes to the office because she has a lump in her right armpit. She reports that the lump increases in size and becomes tender during her period. She also says that it restricts arm movement and interferes with her ability to play tennis, especially during menses. Examination shows a 4 * 4-cm, soft, mobile mass in the right axilla that is tender to palpation. There is no evidence of firmness or palpable nodules within the mass. Which of the following is the most appropriate next step in management?
A ) Excision of axillary tissue
B ) Fine-needle aspiration
C ) Incisional biopsy
D ) Mammogram
E ) Sentinel lymph node biopsy
The correct response is Option A.
Axillary accessory breast tissue should be removed surgically. It is found in 0.4% to 6% of women and may be asymptomatic, cause pain, restrict arm movement, or cause cosmetic problems or anxiety. There have been reports of malignant degeneration of this accessory breast tissue, and the current recommendations are for simple excision through an axillary incision.
Fine-needle aspiration may diagnose the presence of breast tissue, but it also may be inconclusive. A mammogram would not be helpful in confirmation of this diagnosis; however, MRI has been used to evaluate the presence of axillary breast tissue. A sentinel lymph node biopsy would not be necessary given the lack of malignancy. An incisional biopsy taking a sample of tissue is unnecessary, as the lesion should be completely excised.
A 24-year-old woman is undergoing endoscopic transaxillary augmentation mammaplasty. Which of the following is most appropriate to preserve sensation in the medial aspect of the upper extremity?
A ) Avoiding dissection into the axillary fat
B ) Blunt dissection near the clavicle
C ) Identification of the sensory nerves within the axilla
D ) Positioning of the prosthesis subpectorally
E ) Preservation of the lateral pectoral nerve
The correct response is Option A.
During transaxillary augmentation mammaplasty, prevention of sensory changes to the medial aspect of the upper extremity requires a subdermal dissection and avoids dissection into the axillary fat. Branches of the intercostobrachial and medial brachial cutaneous nerves provide sensory innervation to the medial upper extremity. Both nerves course superficially through the axillary fat posterior to the lateral border of the pectoralis major muscle. Dissection within the axillary fat risks injury to these nerves with subsequent anesthesia or paresthesia of the inner arm.
Identification of the nerves within the axilla requires dissection into axillary fat and risks injury to the sensory nerves. Sensory innervation to the medial aspect of the upper extremity is not affected by the positioning of the prosthesis (subpectoral versus subglandular) or dissection near the clavicle. The lateral pectoral nerve provides motor innervation to the lower third of the pectoralis major muscle.
A 65-year-old woman comes to the office 1 month before a scheduled mastopexy. Annual mammography shows a 1.5-cm mass in the upper outer quadrant. Core needle biopsy is performed. Pathologic examination of excised tissue identifies papilloma without atypia. Which of the following is the most appropriate next step in management?
A) Bilateral breast sonography
B) Excisional biopsy of needle-localized area
C) Repeat annual mammography in 12 months
D) Repeat mammography at 6-month intervals for 1 year
E) Stereotactic vacuum-assisted biopsy
The correct response is Option B.
Percutaneous biopsy methods are commonly accepted for the initial evaluation of clinically occult breast lesions, although certain nonmalignant lesions pose dilemmas with respect to the most appropriate clinical management. Papillary lesions of the breast can either be benign or malignant, although differentiation is radiologically difficult. Moreover, it is difficult for pathologists to reliably distinguish among benign, atypical, and malignant papillary lesions on the limited fragmented tissue specimens they receive after needle sampling.
Previous studies have demonstrated high rates of ductal carcinoma in situ (11%) in patients diagnosed with benign papillomas by needle biopsy and who subsequently underwent a surgical excision, although conflicting data suggest an extremely decreased rate of malignancy when histology is benign on needle biopsy.
The management of benign papillary lesions is somewhat controversial. Although conservative follow-up with either yearly mammogram or short-interval follow-up may be appropriate for certain patients diagnosed with benign papilloma, certain features of this patient’s lesion make conservative follow-up inappropriate. Sonographic follow-up in a 65-year-old woman with mature breast parenchyma and a solid mammographically detected mass would not provide much additional information, and a repeat percutaneous biopsy, whether core needle or vacuum-assisted, would also not be effective. Given the size of the lesion and the age of the patient, surgical excision is warranted despite the lack of atypia on needle biopsy. Benign papillomas tend to be smaller than 1 cm and centrally located, whereas malignant lesions are more often greater than 1.5 cm and are peripherally located.
A 25-year-old woman comes to the office because she is dissatisfied after undergoing breast augmentation mammaplasty for correction of tuberous breast deformities. Physical examination shows two parallel creases running transversely across the lower pole of each breast with inferior displacement of the implant. Which of the following best describes the position of the original inframammary fold in this patient?
A) Above the superior and inferior transverse creases
B) At the inferior transverse crease
C) At the superior transverse crease
D) Below the superior and inferior transverse creases
The correct response is Option C.
A double-bubble breast deformity following breast augmentation mammaplasty is represented by the development of two parallel, curvilinear transverse lines in the lower pole of the breast. The native inframammary fold is disrupted and represented by the superior transverse line. The lower transverse line represents the lower limit of implant pocket dissection or the final position of implant descent.
Predisposing anatomic factors for the development of a double-bubble deformity include tuberous breasts, constricted inframammary folds, or a short inframammary fold-to-nipple distance. Other factors that can increase the risk for the development of a double-bubble deformity include glandular ptosis, postpartum involution of the breasts, excessive implant size, and overdissection of the implant pocket. Correction of the double-bubble deformity may require conversion of the implant to a subglandular position, capsulorrhaphies, use of form-stable implants, or dermal grafts.
A 35-year-old woman, gravida 2, para 2, seeks implant-based augmentation mammaplasty. She breastfed both her children. Which of the following is the most common complication of this procedure?
A) Early implant rupture
B) Hematoma
C) Infection
D) Lifetime need for reoperation
E) Seroma
The correct response is Option D.
Augmentation mammaplasty is known to have high rates of complications including reoperation. Infection, seroma, hematoma, and early implant rupture are rare in elective, cosmetic augmentation mammaplasty.
A 49-year-old woman is evaluated because of a traumatic laceration of the right lower eyelid and cheek. Physical examination shows difficulty with eyelid closure, voluntary squinting, and animation. Which of the following branches of the facial nerve is most likely injured?
A) Buccal
B) Cervical
C) Marginal mandibular
D) Temporal
E) Zygomatic
The correct response is Option E.
Anatomically, the orbicularis oculi muscle is divided into three segments: pretarsal, preseptal, and orbital. However, functionally, the orbicularis oculi muscle is divided into the medial inner canthal orbicularis and the extracanthal orbicularis. The medial inner canthal orbicularis is responsible for blinking, lower lid tone, and the pumping mechanism of the lacrimal system. Innervation to the inner canthal orbicularis is from the buccal branches of the facial nerve. The zygomatic branch of the facial nerve innervates the extracanthal orbicularis, which controls eyelid closure, voluntary squinting, and animation. The temporal, marginal mandibular, and cervical branches do not provide innervation to the orbicularis oculi muscle.





