Twelve years after menopause, a 60-year-old woman undergoes laparotomy for an ovarian carcinoma. The ovarian tumor that is most likely to respond to radiotherapy is which of the following?: (A) Dysgerminoma, (B) Krukenberg's tumor, (C) Arrhenoblastomas, (D) Granulosa cell tumor
Answer is A. Dysgerminoma (like seminoma in men) is very radiosensitive. The Krukenberg's tumor is a metastatic tumor to the ovary and is not treated by radiation. The other tumors are best treated by surgery. The Brenner tumor is most often a benign tumor. Arrhenoblastomas and granuloso cell tumors are hormone-producing tumors.