A 95-year-old man was diagnosed with left renal pelvis cancer which presented with rapid tumor growth, multiple metastases, and bilateral tender gynecomastia. Elevated serum human chorionic gonadotropin (hCG), prolactin, estradiol, and progesterone were detected. The patient's condition rapidly deteriorated, and he passed away.
Keywords: gynecomastia; human chorionic gonadotropin; prolactin; renal pelvis cancer; sex hormones; urothelial carcinoma.
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