A CASE OF MUCINOUS CYSTOADENOCARCINOMA OF VERMIFORM APPENDIX PRESENTING WITH INTUSSUSCEPTION

We have experienced a case of mucinous cystoadenocarcinoma of the vermiform appendix presenting with intussusception. A 56-year-old woman was admitted to the hospital because of a sudden onset of abdominal pain in the right lower quadrant. Ultrasonography revealed a 3×3cm cystic lesion with target like appearance in the ileocecal region. An intussusception of the vermiform appendix brought about by appendical cyst was diagnosed by preoperative barium enema, total colonofiberscope, computed tomography and angiography. Right hemicolectomy with lymph node dissection was performed, because the polipoid lesion in the cyst was suspicious of malignancy. Histopathological examination showed mucinous cystoadenocarcinoma (m, ly0, v0, n0) of the appendix. In this case, abdominal ultrasonography contributed to establish the preoperative diagnosis.