part_of part of part of has_disease_location Leydig cell ovarian neoplasm ovary Ovarian Sertoli-Leydig Cell Tumor MedDRA:10073278 NCIt:C2880 A benign or malignant sex cord-stromal tumor arising from the ovary. It is characterized by the presence of neoplastic Leydig cells. Signs and symptoms include hirsutism, menorrhagia and metrorrhagia. It may be associated with trisomy 8.