A Case of Primary Adenosquamous Carcinoma of the Ileum Diagnosed by Laparoscopic Ileocecal Resection

Abstract

A 66-year-old man was referred to our hospital to have a detailed examination for an ileocecal tumor. He had complained of abdominal discomfort for three months. In the previous hospital, an ileocecal tumor and a small intrapelvic nodule implying peritoneal dissemination were detected by abdominal computed tomography (CT). Lower gastrointestinal endoscopy found a tumor in the terminal ileum, but examination of the biopsy specimen failed to confirm the presence of malignant disease. After visiting our hospital, his abdominal discomfort became worse. Laparoscopic ileocecal resection was performed to avoid bowel obstruction. Histopathological examination proved the coexistence of adenocarcinoma and squamous cell carcinoma in the same tumor, and primary adenosquamous carcinoma of the ileum was diagnosed. Although multiple liver metastases and progression of peritoneal dissemination were detected by postoperative positron emission tomography-CT, the patient and his family refused extra treatment and chose best supportive care.