D efinition — A benign ovarian stromal tumor composed of cells resembling ovarian stroma with variable theca cell differentiation. Clinical Features Epidemiology Fibromas are common, typically solitary, and found most commonly after menopause. Pure thecomas are rare and account for…
D efinition — A malignant germ cell tumor of the ovary with two or more germ cell elements. Clinical Features Epidemiology Rare; represents less than 5% of all ovarian germ cell tumors. Most cases arise in patients in their teens…
D efinition — A malignant germ cell tumor recapitulating fetal somatic differentiation. Clinical Features Epidemiology Rare, comprising less than 1% of all germ cell tumors but third most common malignant germ cell tumor in young women. Mean age of 19…
D efinition — A malignant, primitive germ cell tumor of the ovary with embryonic differentiation. Clinical Features Epidemiology Rare; represents less than 5% of all malignant ovarian germ cell tumors. Most cases arise in patients in their teens or twenties…
D efinition —A malignant germ cell tumor with endodermal sinus or vitelline differentiation. Clinical Features Epidemiology The majority of patients are in their teens or twenties, although cases commonly occur in the first and fourth decades of life as well.…
D efinition — A malignant, primitive germ cell tumor of the ovary that is the counterpart to testicular seminoma. Clinical Features Epidemiology Rare; represents only 1% of all ovarian germ cell tumors but is the most common malignant germ cell…
D efinition — A malignant tumor of somatic tissues arising from an element of mature teratoma. Clinical Features Epidemiology Rare, occurring in 1% of mature cystic teratomas. Approximately 90% are epithelial, 80% of which are squamous carcinomas. Mean age is…
D efinition — Metastatic carcinoid, usually from the gastrointestinal tract. Clinical Features Epidemiology The majority of metastatic carcinoids are of distal ileal origin. Have a wide age range, but most will be postmenopausal. You’re Reading a Preview Become a Clinical…
D efinition — A monodermal teratoma composed of both struma (thyroid) and a trabecular carcinoid. Clinical Features Epidemiology Strumal carcinoids are rare tumors with bidirectional differentiation, resulting in both thyroid and neuroendocrine differentiation. Seen over a wide age range, from…
D efinition — Malignant teratomatous thyroid tissue (carcinoma). Clinical Features Epidemiology Association with mature cystic teratomas and struma ovarii. Mean age is approximately 43 years. Approximately 5% of struma are malignant, at least focally. Some estimates are higher and this…