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…
D efinition — A teratoma composed principally of thyroid tissue. Clinical Features Epidemiology Struma ovarii is a monodermal ovarian teratoma predominantly composed of thyroid tissue. Seen most commonly in the fifth decade of life. Virtually always unilateral. Contralateral cystic teratoma…
D efinition — Germinal matrix or cerebellar differentiation in a mature teratoma; mimics immature neuroepithelium. Clinical Features Epidemiology Occurs in typical benign cystic teratoma. You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles…
D efinition — A clinical term for increased mucin present within the abdominal cavity, typically associated with a low-grade mucinous tumor of the appendix or gastrointestinal tract. Clinical Features Epidemiology Pseudomyxoma is frequently associated with appendiceal neoplasms; however, occasional cases…
D efinition — Ovarian spread from remote nongynecologic epithelial neoplasms. Clinical Features Epidemiology Sixty to eighty percent of metastatic tumors are nonmüllerian, including stomach (6% to 14%); colon (7% to 12%); breast (9% to 32%); and rarely lung, biliary duct,…
D efinition — An early form of clear-cell neoplasia with malignant cytology and the absence of invasion. Clinical Features Epidemiology Clear-cell tumors of this type typically present as adenofibromas that can arise de novo or from within endometriotic cysts. Uncommon…
D efinition — A malignant, endometriosis-associated epithelial tumor. Clinical Features Epidemiology Uncommon. Distinct gene expression profile. Present in postmenopausal women with a mean age in the 50s. You’re Reading a Preview Become a Clinical Tree membership for Full access and…
D efinition — An invasive ovarian carcinoma with a transitional growth pattern that contains areas of benign or borderline Brenner tumor. Clinical Features Epidemiology Rare. Can present at a range of ages, but the mean age is in the 60s.…
D efinition — A benign ovarian tumor composed of cells resembling transitional epithelium of the urinary tract. Clinical Features Epidemiology Uncommon but seen periodically in practice. Brenner tumors may represent up to 5% of benign epithelial tumors of the ovary.…