Multiple intestinal hemangioma concurrent with low-grade appendiceal mucinous neoplasm presenting as intussusception—a case report and literature review

Abstract

Background Cases with intussusception caused by either intestinal hemangiomas or appendiceal mucinous neoplasms are extremely rare. Case presentation In this study, we reported a 47-year-old male presented with paroxysmal abdominal pain and postprandial bloating for 3 days. CT results indicated a high possibility of secondary intussusception in ascending colon. Histopathology indicated a mixed type of cavernous and capillary hemangioma, combined with low-grade appendiceal mucinous neoplasms (LAMNs) and intestinal obstruction. The patient underwent laparotomy and right hemicolectomy. Finally, the patient was followed up for 4 months with no disease progression. Conclusions Rare studies reported the intestine hemangiomas coincided with appendix low-grade mucinous tumor. Its manifestations are not specific, which is a challenge in the preoperative diagnosis. For cases with intussusception that was not observed in time, it may lead to intestinal necrosis and diffuse peritonitis. Additionally, the ruptured mucinous tumor in the appendix may lead to pathogenesis of pseudomyxoma peritonei. Therefore, accurate diagnosis and appropriate surgery-based treatment contribute to the improvement of prognosis and severe outcomes among these patients.

A rare case report: low grade appendiceal mucinous neoplasm (LAMN) located under the left costal margin, the gastric level and the transverse colon

“…In our case, the localization was atypical, in the upper left epigastrium. A rare case with intussusception is described, that is caused by either intestinal hemangiomas or appendiceal mucinous neoplasms [ 5 ]. In our case, the intussusception was caused by the appendiceal mucinous neoplasm.…”