Case Report of Intussusception Caused by a Large Mesentery Lymph Node in a Patient With Ulcerative Colitis

Abstract

A 13-year-old boy presented with complaints of abdominal pain for two days and bloody stool for one month. The patient underwent Computed Tomography (CT) and diagnosed as having intussusception (ileum colon type), and was referred to our hospital. The mass lesions found on CT images were considered to be the leading point of intussusception. The patient underwent open reduction surgery to clarify the leading point of intussusception. There was no sign of intestinal necrosis and it was easily redacted using Hutchinson procedures. There were several large lymph nodes (LNs) in the mesentery of the terminal ileum with a 20 mm LN at the leading point of intussusception. Bloody stool was observed on postoperative day 1, but no recurrence of intussusception was found by abdominal ultrasonography. The patient underwent colonoscopy on postoperative day 4, which revealed the presence of ulcerative colitis. Intussusception usually occurs in patients under 1 year of age and is very rare in patients over 6 years of age. These patients usually have an organic leading point of their intussusceptions. Even then, intussusception caused by ulcerative colitis in older children is very rare and reports of such cases are difficult to find.