RT Journal Article T1 [Importance of the exhaustive anamnesis to an unexplained unilateral gynecomastia in a child]. T2 Importancia de la anamnesis exhaustiva ante una ginecomastia unilateral inexplicada en un niño. A1 Pérez-García, Cristina A1 Ariza Jiménez, Ana B A1 Camacho Lozano, Laura A1 de la Cámara Moraño, Carmen K1 Gynecomastia K1 Prepubertal AB Gynecomastia consists of breast enlargement due to a hormonal imbalance between estrogens and androgens. Unilateral and important breast growth requires ruling underlying pathologic disorders out. Mechanical cause is uncommon, causing enlargement by repeated stimulation. We report a 6-year-old boy with unilateral gynecomastia. Hyperprolactinemia is the only abnormal finding at laboratory tests. After repeated inquiries, a continuous breast selfstimulation is detected. Its relation with gynecomastia is verified because prolactin normalizes and breast regressed in further revisions, after stopping stimulus. YR 2018 FD 2018 LK http://hdl.handle.net/10668/12930 UL http://hdl.handle.net/10668/12930 LA es DS RISalud RD Apr 4, 2025