Small Bowel Intussusception Secondary to Polyp-MRI Diagnosis

These MRI images in a pregnant female show multiple polypoid lesions involving the small bowel. The polyps have variable in appearance. The presence of multiple gastrointestinal polyps can be seen in Peutz-Jeghers syndrome,  familial adenomatous polyposis, juvenile polyposis, Cowden disease, and Cronkhite-Canada syndrome etc.  Important complication is intussusception as seen in these images. An intussusception is composed of two parts: the intussuscipiens, or receiving loop, and the intussusceptum, or donor loop, which includes an entering limb and a returning limb with attached mesenteric fat interposed between them. Relatively solid mass is noted in the apex of the intussusception.