Intestinal metastasis causing intussusception in a patient treated for osteosarcoma with history of multiple metastases: A case report

Intestinal intussusception caused by metastatic tumors is a very rare condi tion. Preoperative diagnosis is not easy because of the condition's rarity and because of mild abdominal physical presentation. We report on a patient with osteosarcoma who suffered from abdominal pain and emesis during the p eriod of autologous peripheral blood stem cell transplantation. He had unde rgone tumor excision and radiotherapy several times prior to autologous per ipheral blood stem cell transplantation because of multiple metastases. Int estinal metastasis was suspected initially by computed tomographic scan and sonogram and was proved by surgical resection and pathological findings. C linicians caring for pediatric patients with osteosarcoma with a history of multiple metastases should consider the possibility of intestinal metastas es when equivocal abdominal symptoms develop after intensive chemotherapy.