Objectives: The purpose of this study is to present the clinical and sonographic findings of torsion of a testicular appendage in children. Materials and methods: We reviewed all cases of torsion of testicular appendage operated in our hospital and having preoperative ultrasound. Results: 4 patient's mean ages 7.2 (4 - 10 years old), pain duration 3.7 days, neither fever nor vomiting, negative cremasteric reflex 3/3, scrotal skin thickening 4/4.