OBJECTIVE: To report two cases of acute idiopathic scrotal edema.METHODS: We describe the cases of two 12-year-old male patients presenting at the emergency department of our hospital with pain, edema and erythema in one hemiscrotum without history of trauma.RESULTS: On physical examination both patients showed red hemiscrotum skin and increase of the size with normal testicles and epididymis. With the diagnosis of acute scrotum testicular ultrasound were performed and showed heterogeneous edema of the scrotal skin with increased in Doppler flows and normal testicles.CONCLUSIONS: Acute idiopathic scrotal edema is a selflimited pathology which basically affects children before puberty and should be included in the differential diagnosis of acute scrotum to avoid aggressive interventions.