Ovarian Tumors of Non-Epithelial Origin and other Disorders Flashcards
Histiogenesis of Germ Cell tumors

Dysgerminoma
Age?
Male Equivalent?
Young women and girls
Male equivalent is seminoma
Pathogenesis of Dysgerminoma
c-kit upregulated (diagnostic and theraputic target)
Transcription factors oct3,4, and Nanog maintain pleuripotency
Good prognosis
Gross Appearance of Dysgerminoma

Dysgerminoma Histopathology

Yolk Sac Tumor
Age?
Prognosis?
Young women <30 years of age
Good prognosis with chemotherapy
Gross appearance of Yolk sac tumor
Multiple cysts, hemorrhages

Diagnostic feature of yolk sac tumor
Increase in serum level of AFP
RICH in AFP
Yolk Sac tumor histopathology

Choriocarcinoma is identical to what?
Placental tumor
Choriocarcinoma course/timeline
Primary tumor may regress, leaving only metastasis sites
Types of epithelium involved in Choriocarcinoma
Syncytiotrophoblast
Cytotrophoblast
Choriocarcinoma gross appearance
Small hemorrhagic nidus/focus
Types of Ovarian teratomas?
Mature (benign, cystic (dermoid cyst))
Immature Teratoma
Monodermal (specialized)
Mature Teratoma
all three germ ayers
commonest germ cell tumor
Immature Teratoma
potentially malignant
Monodermal Teratoma
Struma ovarii
ovarian carcinoid
Mature Cystic Teratoma
Age?
Any age, usually younger patients
In elderly women–> might see malignant transformation (squamous cell carcinoma)
Mature Cystic Teratoma gross appearance
Mature tissues haphazardly arranged
Hair, teeth, and sebaceous glad
Mature NORMAL tissue, haphazardly arranged. Mostly, Hair, teeth and csebaceous glands. But cartilage and intestinal epithelium may also be seen.

Immature Teratoma
Age?
Prepubertal adolescents and young women
Complication of immature ovarian teratoma
Potentially malignant
Derivation of immature teratoma
immature neural tissue
Two types of monodermal (specialized) teratoma
Struma Ovarii
Ovarian Carcinoid
Complication of Struma Ovarii
thyrotoxicosis
Complication of ovarian carcinoid
carcinoid syndrome
Types of Sex chord stromal tumors
Granulosa cell tumor
thecoma
fibroma
sertoli-leydig cell tumor
gonadoblastoma
Granulosa cell tumor Gross
Solid, yellow, small cysts

Granulosa cell tumor Histopathology

Fibromas, thecomas, and fibrothecomas
Benign or Malignant?
BENIGN
Thecoma Histology and Marker
Histo= theca cells
Marker= estrogen
Thecoma estrogen excess complication?
Dysfunctional uterine bleeding
Endometrial hyperplasia and carcinoma
Thecoma Gross appearance?
Thecoma histological appearance?
Gross: Pale fleshy cut surface, yellowish fatty areas
Histopathology: Spindle cells with abundant lipid

Fibroma?
Histologically, MEIGS Syndrome may be seen with the benign ovarian tumor may be a fibroma, thecoma, cystadenoma, or granulosa cell tumor. Fibromas are also associated with Benign Nevus syndrome.

Sertoli-Leydig cell tumor
malignant or benign?
malignant
Sertoli Leydig cell tumors secrete what?
May secrete Androgens
(Virilization or defeminizing symptoms)
Sertoli Leydig cell tumor
Gross?
Histo?

Granulosa Cell tumor marker?
INHIBIN
Gonadoblastoma characteristic feature?
Dysgenic streak ovaries
(Germ cell component may undergo malignant change to form Dysgerminoma AND Granulosa cells)
Primary sites for metastatic tumors?
Primary sites: breast > colon > endometrium > stomach
Metastatic tumor characteristics?
B/L, solid
Histologically- adenocarcinoma
What is a Krukenberg tumor?
Bilateral metastases of mucin-producing signet-ring cell carcinoma within the ovarian stroma
Bilateral fleshy cerebriform masses

Krukenberg Tumor histo?
Clusters of Signet Ring Cells

Where does Krukenberg tumor originiate from (What metastasizes)?
Metastasis from Gastric carcinoma
Pathological Basis of signs and symptoms in the reproductive age female?
