# Double ileo-ileal intussusception secondary to inflammatory pseudotumor in an adult: A rare case report

## TL;DR

A rare case of double ileo-ileal intussusception caused by an inflammatory pseudotumor in an adult is reported, highlighting the importance of recognizing unusual benign tumors as lead points.

## Contribution

This case report presents a rare occurrence of double intussusception in an adult caused by an inflammatory pseudotumor.

## Key findings

- Inflammatory pseudotumor can act as a lead point for intussusception in adults.
- Double ileo-ileal intussusception is an exceptionally rare condition requiring surgical intervention.
- Prompt surgery allows for diagnosis and treatment of such rare presentations.

## Abstract

Adult intussusception is rare and typically associated with an underlying lead point. Inflammatory pseudotumor, a rare benign lesion of uncertain etiology, can serve as such a lead point in the small bowel. The occurrence of double intussusception in this context is exceptionally uncommon.

A 55-year-old woman presented with signs of small bowel obstruction. Imaging(Fig. 1–11) revealed ileo-ileal intussusception. Intraoperatively(Fig. 16–18), a Double intussusception configuration was observed where one intussuscepted segment acted as the lead point for a second. A firm lesion at the apex was resected. Histopathology confirmed Inflammatory Pseudotumor(Fig. 12–15). The patient recovered uneventfully and remained asymptomatic at 6-month follow-up.

Double intussusception is extremely rare in adults. In this case, an inflammatory pseudotumor triggered an initial ileo-ileal intussusception, which subsequently served as the lead point for a second. The unusual etiology and configuration can pose diagnostic challenges, as radiological imaging may not fully reveal the complexity. Surgical intervention was required for definitive management.

Double ileo-ileal intussusception caused by an inflammatory pseudotumor represents an exceedingly rare etiology of acute intestinal obstruction in adults. Prompt surgical treatment is critical. This case highlights the importance of considering rare benign tumors as potential lead points in adult intussusception.

•Adult intussusception is rare and typically has a pathological lead point.•Inflammatory pseudotumor is an unusual benign tumor that can cause intussusception.•This case revealed a unique Double intussusception configuration.•Prompt surgery enabled both definitive diagnosis and curative treatment.•Surgeons and radiologists should be aware of such rare presentations.

Adult intussusception is rare and typically has a pathological lead point.

Inflammatory pseudotumor is an unusual benign tumor that can cause intussusception.

This case revealed a unique Double intussusception configuration.

Prompt surgery enabled both definitive diagnosis and curative treatment.

Surgeons and radiologists should be aware of such rare presentations.