病例1 患者男性,60岁,活检证明为右颊粘膜鳞状细胞癌,经放疗和化疗失败。无消化性溃疡病史。行肿瘤切除及右侧颈清扫术,包括右下颌骨及右颊部全层切除。缺损区用皮桨作外层的游离腓骨血管骨移植修复,舌瓣作衬里。术后2周出现严重黑大便,因颌间栓丝未能行内窥镜检查,4天后再次发生黑大便,即行剖腹探 Case 1 Patient Male, 60 years old, biopsy proven right buccal mucosa squamous cell carcinoma, failed by radiotherapy and chemotherapy. No history of peptic ulcer disease. Tumor resection and right neck dissection, including right mandibular and right cheek full-thickness resection. Defective area with a paddle for the outer fibular vascular bone graft free repair, flap for lining. Serious black stools occurred 2 weeks after operation, because of the failure of endoscopic examination of the intermaxillary embolism and recurrent black stools after 4 days, ie, exploratory laparotomy