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Zorluk: OrtaGynecologic Oncology

Match each clinical and histopathological vignette with the most likely gynecologic neoplasm.

  • A 22-year-old woman with a solid ovarian mass; labs show elevated lactate dehydrogenase (LDH). Histology reveals uniform cells with clear cytoplasm and central nuclei ("fried egg" appearance).Dysgerminoma
  • A 19-year-old woman with a rapidly growing adnexal mass; labs show markedly elevated alpha-fetoprotein (AFP). Histology demonstrates Schiller-Duval bodies.Yolk sac tumor
  • A 55-year-old postmenopausal woman with vaginal bleeding and endometrial hyperplasia; labs show elevated inhibin. Histology demonstrates Call-Exner bodies.Granulosa cell tumor
  • A 28-year-old woman with hemoptysis and vaginal bleeding 6 months after a normal delivery; labs show markedly elevated beta-hCG. Histology shows atypical trophoblasts without chorionic villi.Choriocarcinoma

Cevap

The vignettes correspond sequentially to Dysgerminoma, Yolk sac tumor, Granulosa cell tumor, and Choriocarcinoma based on their distinct tumor markers and classic histopathology.
Each gynecologic neoplasm has unique histopathological characteristics and secretes specific tumor markers. Dysgerminomas are associated with LDH and 'fried egg' cells. Yolk sac tumors are associated with AFP and Schiller-Duval bodies. Granulosa cell tumors produce estrogen (and inhibin) causing postmenopausal bleeding and exhibit Call-Exner bodies. Choriocarcinomas secrete high levels of beta-hCG, lack chorionic villi, and often present with hematogenous metastases following a pregnancy.

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1
Analyze the first vignette focusing on the adolescent age, elevated LDH, and clear cells with central nuclei.
Identifies the tumor as a dysgerminoma.
Dysgerminoma is an ovarian germ cell tumor equivalent to a male seminoma, characterized by elevated LDH (and sometimes beta-hCG) and uniform cells resembling 'fried eggs'.
2
Analyze the second vignette focusing on elevated AFP and Schiller-Duval bodies.
Identifies the tumor as a yolk sac tumor.
Yolk sac tumors are aggressive germ cell tumors marked by AFP production and classic glomerulus-like histologic structures known as Schiller-Duval bodies.
3
Analyze the third vignette focusing on elevated inhibin, postmenopausal bleeding, and Call-Exner bodies.
Identifies the tumor as a granulosa cell tumor.
Granulosa cell tumors are sex cord-stromal tumors that produce estrogen, leading to endometrial hyperplasia and subsequent bleeding. They secrete inhibin and histologically show rosette-like Call-Exner bodies.
4
Analyze the fourth vignette focusing on markedly elevated beta-hCG, preceding normal pregnancy, hemoptysis, and lack of chorionic villi.
Identifies the tumor as a choriocarcinoma.
Choriocarcinoma is a highly malignant epithelial tumor comprising trophoblasts without villi. It aggressively metastasizes hematogenously, frequently to the lungs (causing hemoptysis), and produces very high levels of beta-hCG.

Anahtar Kavram

Differentiation of gynecologic neoplasms based on distinctive tumor markers (LDH, AFP, inhibin, beta-hCG) and pathognomonic histologic findings.
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Konular

Gynecologic Oncology

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