Pathoma CH. 13 Female Genital System and Gestational Pathology Flashcards
What are the anatomical elements of the vulva?
Labia majora, labia minora, mons pubis, and vestibule
35 y/o patient presents with left sided painful cystic lesion adjacent to the vaginal canal. What type of cyst is most likely causing this unilateral pain and what causes this type of cyst?
Bartholin cyst—caused by inflammation and obstruction of the bartholin gland
What are the two most common causes of a bartholin cyst?
Infection and STDs
What are the 2 most common HPV strains causes a condyloma?
HPV 6 and 11
Warty neoplasm present in the vulvar skin…
Condyloma
A condyloma can occur secondary to what type of STD other than HPV?
Syphilis—less common
What histological characteristic does an HPV-associated condyloma have?
Koilocytes
Raisin/crinkled cells present in HPV-associated condylomas…
Koilocytes
Why are HPV strain 6 and 11 considered low risk HPV types?
The condylomas associated with these strains RARELY develop into carcinoma
Name the 4 most common high risk HPV types that can lead to dysplasia and carcinoma…
HPV 16, 18, 31 and 33
What disorder is associated with thinning of the epidermis and fibrosis of the dermis?
Lichen sclerosis
A postmenopausal patient presents with leukoplakia (white patch) and parchment-like vulvar skin. What disorder is associated with these findings?
Lichen sclerosis
Lichen sclerosis is a _____ tumor with an increased risk of ___________.
Benign
Squamous cell carcinoma
Hyperplasia of the vulvar squamous epithelium…
Lichen Simplex Chronicus
Patient presents with leukoplakia on thick, leathery vulvar skin and complains of constant irritation and scratching around the area. What is the most likely disorder this patient is presenting with?
Lichen Simplex Chronicus
Is Lichen Simplex Chronicus benign or malignant? Is there an increased risk of developing a carcinoma from this abnormality?
Benign—no increased risk of squamous cell carcinoma
Thinning of the vulvar skin is seen in what abnormality?
Lichen Sclerosis
Thickening of the vulvar skin is seen in what abnormality?
Lichen Simplex Chronicus
Squamous epithelium lining the vulva can develop into what type of cancer?
Vulcar carcinoma
What three vulvar disorders present with leukoplakia and why is a biopsy performed?
Lichen sclerosis
Lichen simplex chronicus
Vulvar carcinoma
Biopsy performed to distinguish each from one another and to determine if carcinoma
A 45 year old woman presents with leukoplakia of the vulvar and it was determined to be caused by vulvar carcinoma. Is the etiology HPV or non-HPV related? Why?
HPV— Seen primarily in premenopausal women btwn the ages of 40-50
A postmenopausal woman presents with vulvar carcinoma and has a history of lichen sclerosis. Is the etiology HPV or non-HPV related? Why?
Non-HPV related—this is due to long standing lichen sclerosis
HPV-related vulvar carcinoma is due to what HPV types?
High-risk—16,18,31, and 33
What are the most common risk factors for HPV related vulvar carcinoma?
Multiple partners
Early intercourse
Women of reproductive age
What vulvar disease is characterized by koilocytic change, disordered cellular maturation, nuclear atypia and increased mitotic activity? What cancer can develop from this disease?
Vulvar intraepithelial neoplasia
Vulvar carcinoma
Malignant epithelial cells in the epidermis of the vulva indicate what?
Extramammary Paget Disease
A female patient presents with erythematous, pruritic(itchy), ulcerated vulvar skin. What disease is most likely associated with this presentation?
Extramammary Paget disease
Extramammary Paget Disease of the breast will present with or without surrounding cancer?
With—Malignant epithelial cells of the nipple within the epidermis of the nipple will almost always present with underlying carcinoma—Paget disease of the vulva will NOT
Extramammary Paget disease of the vulva usually represents carcinoma _______ and will have no underlying carcinoma.
In situ
Name the stains used to distinguish Extramammary paget disease of the vulva from melanoma of the vulva…
PAS
Keratin
S100
PAS+, keratin+ and S100- will represent Paget cell carcinoma or melanoma?
Paget cells—PAS marks mucous, which only glandular tissue produces mucous—involves the epidermis—so PAS + → Paget
PAS-, keratin – and S100+ will represent Paget cell carcinoma or melanoma?
Melanoma—S100+→ melanoma
The mucosa of the vagina is lined by what type of epithelium?
Non-keratinizing squamous epithelium
This abnormality is characterized by focal persistence of columnar epithelium in the upper vagina…
Adenosis
The squamous epithelium from the lower 1/3 of the vagina is derived from what embryological structure?
Urogenital sinus
The columnar epithelium from the upper 2/3 of the vagina is derived from what embryological structure?
Mullerian ducts
The columnar epithelium of the upper 2/3 of the vagina is normally replaced by the lower 1/3 squamous epithelium. Name the disease where this replacement doesn’t occur and the columnar epithelium remains…
Adenosis
A female patient who was previously exposed to diethylstilbestrol (DES) in utero (because it can easily cross the placenta) is at risk for what vaginal disease?
Adenosis—can progress to clear cell adenocarcinoma
Malignant proliferation of glands with clear cytoplasm…
Clear cell adenocarcinoma
What precursor disease can lead to clear cell adenocarcinoma?
Complication of DES-associated vaginal adenosis
Malignant mesenchymal proliferation of immature skeletal muscle…
Embryonal Rhabdomyosarcoma
A 4 year old female patient presents with a grape-like mass protruding from the vagina with associated bleeding. What vaginal disorder does this patient most likely have?
Embryonal Rhabdomyosarcoma—also known as sarcoma botryoides—can occur in males and usually in children
What are the three characteristic features of Rhabdomyoblast seen in embryonal rhabdomyosarcoma?
1)Cytoplasmic cross-striations
Positive immunohistochemical staining for 2)desmin and 3)myogenin
Desmin—intermediate filament found in skeletal muscle
Myogenin—found in immature skin
What carcinoma arises form the squamous epitheliual lining of the vaginal mucosa?
Vaginal carcinoma
What HPV types are usually related to vaginal carcinoma?
High-risk—16,18,31, and 33
What is the dysplastic precursor for vaginal carcinoma?
Vaginal intraepithelial neoplasia (VAIN)
When cancer occurs in the lower 1/3 of the vagina, what regional lymph nodes can it spread to?
Inguinal nodes
When cancer occurs in the upper 2/3 of the vagina, what regional lymph nodes can it spread to?
Iliac nodes
What are the two division of the Cervix?
Exocervix and endocervix
What epithelium lines the exocervix?
Nonkeratinizing squamous
What epithelium lines the endocervix?
Single later of columnar cells
What is the junction btwn the exo and the endocervix?
Transformation zone
Within the cervix, what area is most susceptible to HPV?
Transformation zone
Persistent infection of HPV can lead to an increased risk of __________.
Cervical dysplasia—cervical intraepithelial neoplasia (CIN)
What are the high-risk HPV types for the development of cervical intraepithelial neoplasia (CIN)?
16,18,31 and 33
What are the low-risk HPV types for the development of cervical intraepithelial neoplasia(CIN)?
6 and 11
What 2 proteins are produced by high-risk HPV types and what do these proteins cause?
E6 and E7 proteins—cause increased destruction of p53 and Rb, respectively —loss of tumor suppressor proteins
The production of E6 from high-risk HPV types causes destruction of _____.
P53
The production of E7 from high-risk HPV types causes destruction of _____.
Rb
When high-risk HPV types produce E6 and E7, what cervical abnormality is the patient at an increased risk of developing?
Cervical intraepithelial neoplasia (CIN)
What is seen within the cervical epithelium when cervical intraepithelial neoplasia (CIN) occurs?
Koilocytic change
Disordered cellular maturation
Nuclear atypia
Increased mitotic activity
A grade of CIN I indicates involvement of…
A grade of CIN II indicates involvement of…
A grade of CIN III indicates involvement of…
Slightly less than the entire thickness of epithelium
Carcinoma in situ (CIS) of the cervical epithelium involves…
The entire thickness of the epithelium
What grades of CIN are reversible and which are not?
CIN I,II and III are all reversible—the higher the grade the less likely it is to regress. Carcinoma in situ (CIS) is NOT reversible and is considered metastatic
What is the average age range seen for women who develop cervical carcinoma?
40-50 years
A 44 y/o female patient presents with postcoital vaginal bleeding with associated discharge. What carcinoma should be considered in this patient based on her presentation?
Cervical carcinoma
What are the primary risk factors for cervical carcinoma?
Exposure to high-risk HPVs
What are the secondary risk factors for cervical carcinoma?
Smoking and immunodeficiency (AIDS-defining illness)
Name the two most common subtypes of cervical carcinoma…
Squamous cell carcinoma (80%) and adenocarcinoma (15%)
* Both types related to HPV infections*
What is a common cause of death seen in advanced cervical carcinoma? Why?
Hydronephrosis with postrenal failure due to the advanced tumor invading the anterior uterine wall, entering the bladder, and blocking the ureters
The progression of CIN into carcinoma can take anywhere from _____ to _____ years.
10-20
What is the gold standard for screening of cervical carcinoma?
Pap smear
When performing a Pap smear, where are the cells scraped from?
Transformation zone of the cervix
List the low grade and high grade CINs…
Low grade—CIN I
High grade—CIN II and CIN III
What are the two characteristics of high-grade dysplasia (CIN)?
Cells with hyperchromatic nuclei
High nuclear to cytoplasmic ratios
What is indicated for confirmation after an abnormal Pap smear is discovered?
Confirmatory colposcopy and biopsy
What are the 2 major limitations to Pap smears?
Inadequate sampling of the transformation zone
Limited efficacy in screening for adenocarcinoma
What are the 4 HPV types that the vaccine covers?
6, 11, 16 and 18
What do antibodies against HPV type 6 and 11 protect against?
Condylomas
What do antibodies against HPV type 16 and 18 protect against?
CIN(cervical intraepithelial neoplasia) and Carcinoma
Why are Pap smears still necessary, even with the vaccine?
Because of the many different HPV subtypes that the vaccine does NOT cover
What hormone drives the proliferative phase/growth of the endometrium?
Estrogen