Intussusceptions in children have been considered a medical-surgical emergency. This concept relates to ileocolic invagination, which rarely remits spontaneously; it involves a vascular risk for affected intestine, and requires a prompt resolution. The increased use of ultrasound in abdominal pain evaluation has resulted in ever rising frequency rates in detection of small intestine intussusceptions, a phenomenon that is often self-limited. To analyze relevant clinical and ultrasonographic aspects of these patients, a retrospective study of medical records and ultrasound findings of 43 pediatric patients (7 months-10 years) presenting with intussusceptions of the small intestine, was conducted. The most frequent symptoms were abdominal pain (72%) and vomiting (36%). Ten patients presented more than one intussusceptions, adding up to 55 invaginations in the series. Predominantly they were located in the periumbilical region, while transverse and longitudinal diameters ranged from 0.9 and2.7cm (1.6 average), and 3.9 and 1.0 cm (2.2 cm average), respectively Intussusceptions was self-limited in all the cases, disappearing during the examination period in 64 per cent of patients, whereas remission of invagination in the remaining 36 per cent occurred subsequently during ultrasound exams performed from 45 minutes to 22 hours afterwards. Nineteen per cent of patients were hospitalized and none of them required surgery. The most common final diagnosis in these children were acute gastroenteritis, enterovirosis, and acute diarrheal syndrome. Being aware of this pathology seems of relevance since the radiologist plays an important role in the conservative management of these patients.