<![CDATA[Introduction: Intussusception is an emergency situation when the proximal intestine enters the distal intestine) which generally occurs in children. The classic triad of intussusception is abdominal pain, vomiting, and bloody or mucous stools. Ultrasonography (USG) is the main modality for diagnosing intussusception. On ultrasound examination, typical signs of patients with intussusception can be found, such as the target sign (bull's eye or donut sign), pseudokidney sign, or hayfork (sandwich sign). Early diagnosis and fast and appropriate treatment are determining factors in prognosis. Case: The patient is an 11 month old boy with complaints of defecation mixed with fresh red blood accompanied by mucus with a soft consistency. Complaints begin with a stomach that looks bloated and gets bigger. On physical examination, abdominal distention was found, increased bowel sounds, and palpation showed an elongated oval-shaped mass in the upper right abdomen. Supporting examinations, such as laboratory, showed thrombocytosis and leukocytosis, normal AP thorax x-ray, 3-position plain abdominal x-ray showing partial high obstruction ileus, and whole-abdominal USG showing hypoechoic lesions in the form of a target sign (donut sign), intestines shaped like a kidney (pseudokidney) in the lower abdomen with the impression of supporting the image of lower abdominal invagination. Conclusion: Based on the case, it can be concluded that An. Z, an 11 month old boy with a diagnosis of ileocolic intussusception. The diagnosis is made based on anamnesis, physical examination, laboratory supporting examinations, chest x-ray, 3- position abdominal x-ray and abdominal ultrasound. The treatment given was operative action with CITO exploratory laparotomy and found ileocolic intussusception, inflammation of the appendix, and enlarged lymph nodes in the terminal ileum. Then the intussusceptum and appendectomy are released. Keywords: Intussusception, child, ultrasonography.]]>
