Anderson, M S Occult Leydig cell tumor in a patient with gynecomastia. [electronic resource] - Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists - 267-71 p. digital Publication Type: Case Reports; Journal Article ISSN: 1530-891X Standard No.: 10.4158/EP.7.4.267 doi Subjects--Topical Terms: AdultEstradiol--bloodGynecomastia--etiologyHepatitis C Antibodies--bloodHeroin DependenceHumansHyperprolactinemia--etiologyLeydig Cell Tumor--complicationsMaleOrchiectomySmokingTesticular Neoplasms--complicationsTestis--diagnostic imagingUltrasonography