Nevus lipomatosus superficialis mimicking ectopic breast tissue: A rare case report.

Rationale: Diagnosis of solitary superficial lipomatous mass may vary depending on circumstances. Although preliminary diagnosis can be made through clinical symptoms and imaging studies, final diagnosis can change through histological examination. This is the first reported case of nevus lipomatosus superficialis (NLS) resembling ectopic breast tissue which may provide valuable insights for clinicians managing similar lesions.