Attacks of flushing and cyanosis occur in which type of ovarian tumors:
**Core Concept**
The question is testing knowledge of ovarian tumors that cause paraneoplastic syndromes, specifically those that lead to flushing and cyanosis. This is related to the secretion of certain hormones or substances by the tumor cells that have systemic effects.
**Why the Correct Answer is Right**
The correct answer is associated with androgen-secreting ovarian tumors, specifically Sertoli-Leydig cell tumors. These tumors are a type of sex cord-stromal tumor that can produce androgens, leading to symptoms such as hirsutism, acne, and male pattern baldness. In addition, they can cause androgen-induced flushing and cyanosis due to the increased levels of androgens.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because mucinous cystadenomas are a type of epithelial ovarian tumor, and while they can be large and symptomatic, they do not typically cause flushing and cyanosis.
**Option B:** This option is incorrect because dysgerminomas are a type of germ cell tumor that can produce beta-hCG, leading to hyperthyroidism, but they are not typically associated with flushing and cyanosis.
**Option C:** This option is incorrect because granulosa cell tumors are a type of sex cord-stromal tumor that can produce estrogen, leading to symptoms such as endometrial hyperplasia and vaginal bleeding, but they are not typically associated with flushing and cyanosis.
**Clinical Pearl / High-Yield Fact**
It's worth noting that Sertoli-Leydig cell tumors are rare and account for only a small percentage of ovarian tumors. However, they can be challenging to diagnose and may require a combination of imaging studies and hormonal analysis to confirm the diagnosis.
**Correct Answer: C. Sertoli-Leydig cell tumors.**