[Invagination of the vermiform appendix in mucinous cystadenoma]

Adult intussusception of appendicular mucinous cystoadenoma

Intussusception is a rare cause of adult intestinal obstruction. Clinical manifestations are not specific, which makes a preoperative diagnosis difficult to establish and often causes delay. We report a case of acute intestinal obstruction due to ileocolic intussusception. An emergency laparoscopy was performed revealing an obstructive mass at the ileocecal region resulting from an appendicular tumor. A right hemicolectomy was conducted. The pathologic examination of the resected sample concluded the mass comprised an appendicular mucinous cystoadenoma. We discuss the clinical features, preoperative diagnosis, and surgical strategies of adult intussusception, as well as the uncommon finding of an appendicular mucinous tumor as its causative lesion, with a review of the available literature.

[Intussusception of the appendix. A rare cause of acute abdominal pain in childhood]

Intussusception of the appendix is a rare clinical entity and the preoperative diagnosis is challenging. We report the case of a 12-year-old girl with right-sided abdominal pain and concomitant peranal bleeding. Preoperative abdominal ultrasound showed partial appendicular intussusception which was confirmed by laparotomy. Appendectomy was carried out including a wide peripheral cecal ring. Peranal bleeding restarted 7 weeks after discharge and colonoscopy revealed ulcerative colitis. The etiology, clinical manifestations, diagnostic and therapeutic approaches for appendicular intussusception are discussed.

[Diagnostics and surgical therapy of enteric intussusception in adults illustrated by three cases]

The diagnosis of enteric intussusception is rare in adults but not in children. The clinical picture often takes an insidious course. Acute abdomen may also be caused by enteric intussusception. We report on three patients with enteric intussusception and acute abdomen. In two cases, a CT led to the diagnosis of invagination of the small intestine. In one patient, invagination of the terminal ileum was detected during coloscopy. All patients were submitted to limited segment resection and end-to-end anastomosis. In all three cases, the invagination was caused by benign pathological changes. Enteric intussusception in adults always requires surgery. In more than 95% of the cases, pathological findings are obtained intraoperatively, which are benign in the small intestine in 85-95% of the cases.

Intussusception of the appendix secondary to mucinous cystadenoma

Intussusception of the appendix vermiformis in adults is an unusual entity. We present a 52-year-old male patient with intussusception of the appendix due to a mucinous cystadenoma, and discuss the clinical features, preoperative diagnosis, classification and therapy of this condition together with a review of the literature.