Breast Reduction Flashcards
A 38-year-old woman, gravida 2, para 2, is scheduled to undergo reduction mammaplasty because of pain in the neck and shoulders. She wears a size 44E brassiere. Physical examination shows pendulous breasts. The sternal notch-to-nipple distance is 40 cm. Hypertrophy of which of the following muscles is most likely in this patient? A)Latissimus dorsi B) Levator scapulae C) Pectoralis major D) Rhomboid major E) Trapezius
E) Trapezius
In mammary hypertrophy, the downward pull of the breasts rotates the shoulders forward, requiring significantly more work of the shoulder girdle muscles. It is the unique function of the trapezius to square the shoulders that makes it most vulnerable in mammary hypertrophy; because of the extra work this requires, it often becomes hypertrophic. Patients often complain of shoulder, neck, and upper back pain as aresult of the trapezius strain
Actions of the Trapezius muscle
The trapezius elevates the scapula in squaring the shoulders, and the superior, middle, and inferior fibers act together to pull the scapulae posteriorly, bracing the shoulders.
Actions of the latissimus
The latissimus extends, adducts, and medially rotates the humerus.
Actions of the levator scapulae
The levator scapulae elevate the scapula and rotate the glenoid cavity inferiorly
Actions of the rhomboid major and minor
The rhomboid major and minor together retract the scapula and fix the scapula to the thoracic wall.
Most vulnerable muscle in mammary hypertrophy
In mammary hypertrophy, the downward pull of the breasts rotates the shoulders forward, requiring significantly more work of the shoulder girdle muscles. It is the unique function of the trapezius to square the shoulders that makes it most vulnerable in mammary hypertrophy; because of the extra work this requires, it often becomes hypertrophic. Patients often complain of shoulder, neck, and upper back pain as aresult of the trapezius strain
A 25-year-old woman is scheduled to undergo breast reduction with resection of 2.4 lb (1100 g) from each breast. Current weight is 200 lb (91 kg), and height is 5 ft 8 in (173 cm). Physical examination shows macromastia with nipple-sternal notch distance of 34cm on the left and 35 cm on the right. A photograph is shown. Which of the following postoperative complications is most likely in this patient? A)Bleeding B) Fat necrosis C) Infection D) Seroma E) Wound breakdown
E) Wound breakdown
Wound healing complications are more likely to occur following breast reduction in a young, healthy, but obese patient with large resection volumes. Other complications might occur but are less common. None of the other complications have been associated with risk factors.
Risks associated with breast reduction
Common risks associated with breast reduction include infection, symptomatic scar, seroma, wound healing complications, fat necrosis, asymmetry, and need for reoperation. BMI, volume of breast tissue resection greater than 1000 g per breast, and tobacco use are thegreatest risk factors for complication following surgery.
A 43-year-old woman is undergoing bilateral reduction mammaplasty with the inferior pedicle technique. The dermis is preserved during de-epithelialization of the pedicle to protect which of the following anatomical structures?
A) Perforators from the internal mammary artery
B) Perforators from the lateral thoracic artery
C) Sebaceous glands
D) Subdermal plexus
E) Superficial layer of the superficial fascia of the breast
D) Subdermal plexus
The major blood supply to the breast comes from:
The major blood supply to the breast comes from perforating branchesof the internal mammary artery, lateral branches of the posterior intercostal arteries, and branches of the axillary artery.
Blood supply to the breast: the axillary artery branches
The blood supply from the axillary artery includes the pectoral branches, the highest thoracic artery, and the lateral thoracic artery. Those vessels from the pectoral branches enter underneath the muscle before coming through it to supply the breast tissue. The vessels from the lateral thoracic artery, known as the lateral mammary branches, wrap around the lateral border of the pectoralis muscle to supply the lateral breast.
Blood supply to the breast: the internal mammary artery branches
The second, third, and fourth perforating branches from the internal mammary artery, known as the medial mammary arteries, enter the medial aspect of the breast.
Blood supply to the breast: the intercostal arteries
The perforating branches from the second, third, and fourth posterior intercostal arteries, known as the mammary branches, enter the breast laterally.
Overal locations of the blood vessels of the breast
The vascular arcades seem to be concentrated at the periphery of the breast (the cutaneoglandular plexus), and the larger vessels appear to lie not far beneath the skin, superficial to the glandular tissue.
This finding has led certain authors to conclude that resection of the gland should not commence fewer than 2 to 3 cm from the chest wall; if skin flaps are elevated, they should be kept at least 2 cm thick for maximum viability. This also justifies preservation of the dermis when deepithelializing flaps to protect the subdermal plexus from injury.
What supplies the breast parenchyma?
Perforators from the internal mammary artery and lateral thoracic artery supply the breast parenchyma.
Which of the following arteries is the dominant blood supply to the nipple-areola complex? A) Axillary B) Internal mammary C) Subclavian D) Superficial epigastric E) Thoracodorsal
B) Internal mammary
The nipple-areola complex receives its blood supply from:
The nipple-areola complex receives its blood supply from the mammary arteries, which are a branch of the subclavian artery.
A 16-year-old girl is referred by her pediatrician for mammaplasty because of breast hypertrophy that has worsened during the past 2 years. She wears a size 36DD brassiere and has constant pain in the shoulders and back due to the weight of her breasts. Menarche occurred at 10 years of age. Height is 5 ft 4 in (163 cm), and weight is 165 lb (75 kg). Physical examination shows breast hypertrophy, shoulder grooving, intertrigo dermatitis, and striae. An abnormality of which of the following is the most likely cause of this patient's condition? A) End-organ responsiveness to estrogen B) Number of estrogen receptors C) Progesterone concentration D) Prolactin concentration E) Serum estrogen concentration
A) End-organ responsiveness to estrogen
Mammary hypertrophy: predominant factor leading to the condition
Abnormal end-organ responsiveness to estrogen is the predominant factor leading to breast hypertrophy.
Mammary hypertrophy: hormone levels
It has been demonstrated that normal levels of estrogen, progesterone, and prolactin exist in patients with breast hypertrophy.
Mammary hypertrophy: number of estrogen receptors
These patients have a normal number of estrogen receptors.
A 33-year-old woman comesto the office because of a new lump in her right breast 6 weeks after undergoing bilateral reduction mammaplasty using the inferior pedicle technique. Preoperative examination of the breasts showed no abnormalities. Current examination shows a hard, nontender mass in the lateral aspect of the upper right breast. Which of the following is the most likely diagnosis? A ) Abscess B ) Fat necrosis C ) Fibroadenoma D ) Hematoma E ) Seroma
B ) Fat necrosis
A patient presenting with a hard, nontender lump 6 weeks after reduction mammaplasty is most likely to have fat necrosis. This is usually the result of vascular compromise to areas of the parenchyma associated with hemorrhagic necrosis.
An abscess or hematoma would be firm but likely tender. Fibroadenoma would not likely be palpable so early postoperatively. However, if the lump does not resolve within a few weeks, CT scan or ultrasonography should be considered to rule out malignancy. Seroma would most likely have a softer consistency.
Cause of fat necrosis
Postoperative fat necrosis after breast reduction is usually the result of vascular compromise to areas of the parenchyma associated with hemorrhagic necrosis.
Management of fat necrosis
Small areas of fat necrosis can be managed conservatively, and secondary revision can be performed after a period of 6 months to 1 year. If skin and fat necrosis is extensive and associated with an infection, surgical debridement and antibiotics are required.
An otherwise healthy 33-year-old woman comes to the office because of back pain, brassiere grooving, and an inframammary rash. She wears a size 42 L brassiere. She has one child and says she would like to have more children. BMI is 33 kg/m2. The distance from nipple to sternal notch is 37 cm bilaterally, and the distance from nipple to inframammary fold is 16 cm bilaterally. A photograph is shown. Which of the following is the most appropriate reduction mammaplasty technique for this patient?
A ) Inferior pedicle with Wise skin pattern
B ) Lower pole amputation with nipple grafting
C ) Medial pedicle with vertical skin pattern
D ) Superior pedicle with vertical skin pattern
E ) Superior pedicle with Wise skin pattern and nipple grafting
A ) Inferior pedicle with Wise skin pattern
The patient described is a young, healthy woman, who may desire to have more children later in life, making nipple preservation an optimal choice. She is large in size and has ptosis, making an inferior pedicle with Wise pattern the best technique to ensure adequate tissue removal.
This technique is also able to reduce the vertical dimension of the breast, which is more challenging with vertical skin pattern reduction mammaplasty. Inferior pedicle reduction mammaplasty can achieve significant reduction in breast volume and alleviate preoperative symptoms with a low risk of complications.
Limited incision techniques might fail to achieve reliable reduction in breast volume and result in aesthetic dimensions as well. These vertical scar techniques are best reserved for smaller volume reductions.
A 37-year-old woman obtains a baseline postoperative mammogram six months after undergoing reduction mammaplasty. The presence of which of the following calcifications is most likely to cause the plastic surgeon to order additional evaluation? A ) Branching B ) Dystrophic C ) Eggshell D ) Popcorn-like E ) Rod-like
A ) Branching
Calcifications can be grouped into three categories:
Calcifications can be grouped into three categories: malignant, indeterminate, or benign.
Appearance of malignant vs benign breast calcifications
Malignant calcifications can appear as casting (linear and branching) or pleomorphic (granular).
Benign calcifications have many appearances and include popcorn-like (fibroadenoma), large rod-like (secretory), round eggshell (oil cysts), and dystrophic or coarse (fat necrosis).
When is tissue biopsy indicated postoperatively with discovery of calcification
Tissue biopsy is recommended for calcifications that are determined to be indeterminate or malignant
A 26-year-old woman is scheduled to undergo reduction mammaplasty. In designing the pedicles for the procedure, which of the following arteries is the predominant blood supply to the breast? A ) Internal thoracic B ) Lateral thoracic C ) Supreme thoracic D ) Thoracoacromial E ) Thoracodorsal
A ) Internal thoracic
The internal mammary artery is also called..
Internal thoracic artery
Predominant blood supply to the breast vs other supplies
Perforating branches off of the internal thoracic artery (also called the internal mammary artery) are the predominant blood supply to the breast. The lateral thoracic and thoracoacromial arteries also contribute to the bloodsupply of the breast but to a lesser degree.
Which of the following is the main disadvantage of reduction mammaplasty by liposuction alone? (A)Dissemination of occult cancer (B)Inability to breast-feed (C)Inadequate correction of ptosis (D)Increased hematoma formation (E)Persistence of back pain
(C)Inadequate correction of ptosis
Advantages/disadvantages of liposuction breast reduction
The primary advantage of this technique is the lack of scars. Several authors cite rapid return to work and exercise, decreased operative time, normal sensation, and full ability to breast-feed. Complications such as hematoma, seroma, and nipple necrosis are minimal compared to incisional techniques, and reductions of one to two cup sizes are reported. Symptoms of macromastia are relieved. Authors warn that this technique is not effective in young patients with dense breast tissue and little fatty tissue.
Disadvantages of this technique include difficulty assessing the amount of breast tissue removed because of the infiltration of tumescent solution, lack of pathologic examination, inadequate tissue removal in large reductions, and poor skin shrinkage.
The preferred candidate for liposuction-only breast reduction
The preferred candidate for liposuction-only reduction is described as a young patient with good skin elasticity, minimal to moderate hypertrophy, and no ptosis.
What happens to the position of the nipples with liposuction breast reduction
Although nipples will rise somewhat with liposuction, the average elevation is 2 to 6 cm, and patients still have nipples which are at or below the inframammary fold (first-or second-degree ptosis).
For reduction mammaplasty, which of the following is the greatest advantage of a vertical procedure over an inverted-T method? (A)Decreased risk of hematoma (B)Greater ability to breast-feed (C)Increased sensation of the nipple (D)Initial natural shape of the breast (E)Smaller scar
(E)Smaller scar
Vertical mammaplasty
Vertical mammaplasty is a technique that uses adjustable markings, an upperpedicle for the areola, and a central breast reduction with decreased undermining of the skin. Key features of the vertical scar reduction mammaplasty include skin excision in only one direction, which reduces scar burden, and central vertical glandular excision, which contributes to improved postoperative shape by narrowing the breast while maximizing projection as a result of suturing the medial and lateral pillars together. There is no wide periareolar skin excision; therefore, circumareolar scar quality is not compromised by excess tension
Difficulties with the vertical mammary reduction
However, this method is more intuitive and inherently less precise than the inverted-T method. Because of the central and posterior nature of glandular resection in vertical mammaplasty, it is more difficult to determine the end point of resection
Complications of vertical scar technique vs wise pattern
A recent study comparing vertical mammary reduction with the Wise pattern technique showed no statistical differences in the rate of hematomas and nipple numbness. Breast-feeding is possible with either technique but may require supplementation with formula. The initial shape in a vertical mammaplasty is poor; it has a flattened lower pole, and dog-ears are frequently present. This improves after three to six months, although small revisions are sometimes necessary