This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological oncology, Subject name: Gynaecology & Obstetrics
Reinke crystals are found in 
Select and explain. 
A. Arrhenoblastoma, B. Granulosa cell tumor, C. Dysgerminoma, D. Hilus cell tumor
D: Hilus cell tumor
Answer: D: Hilus cell tumor 
Explanation: Hilus cell tumor: Rare virilizing tumor Arises from cells in the ovarian hilum Presence of Reinke crystals in the cells is the distinguishing feature of leydig or interstitial cells of testis Ref: Shaw Gynecology 17e pg 449.