Gynecomastia - Differential Diagnosis Algorithm No Testicular Mass on Ultrasound • Adrenal Neoplasm • Increased Extraglomerular Aromatase Activity • Liver Disease Testicular Mass on Ultrasound • Leydig Cell Tumor • Sertoli Cell Tumor No Testicular Mass on Ultrasound • Extragonadal Germ Cell Tumor • HCG Secreting Non-Trophoblastic Neoplasm Testicular Mass on Ultrasound • Testicular Germ Cell Tumor Increased T4, Decreased TSH • Hyperthyroidism Increased Testosterone • Testicular Germ Cell Tumor Normal T4 and TSH • Androgen Resistance Decreased Testosterone • Hypogonadism • Klinefelter's Syndrome • Kallman's Syndrome • Testicular Torsion • Testicular Trauma • Congenital Anorchia • Viral Orchitis Increased Prolactin • Prolactin Secreting Tumor Normal Prolactin • Non-Tumor Secondary Hypogonadism #Gynecomastia #Differential #Diagnosis #Algorithm #causes #endocrinology
