Fig. 1. (A) Truncal hirsutism: male pattern hair distribution on the patient's chest. (B) Lopromide contrast-enhanced abdominopelvic CT: nonspecific findings of the right ovary (white circle). (C) Transvaginal ultrasonography: no abnormal echogenicity in the patient’s right ovary (white ellipse) and other pelvic structures. (D) T2-weighted MRI: ovoid-shaped homogeneous right ovary, and nonspecific findings of the right ovary (arrow). (E) ¹⁸F-FDG PET-CT: small focal FDG uptake in the right adnexa (arrow). (F) Macroscopic features of the pure Leydig cell tumor: yellow solid mass of 1.5 cm in size.

CT, computed tomography; MRI, magnetic resonance imaging, FDG, fluorodeoxyglucose; PET-CT, positron emission tomography computed tomography.