恶性纤维组织细胞瘤（简称恶纤组）常发生在深部软组织，尤以四肢大腿部多见，其次是躯干、腹膜后、头颈等。而发生在食管器官恶纤组十分罕见，现将我科近年活检中遇到2例报告如下。例1，男，50岁。进行性吞咽困难2月余。食管镜检查距门齿25cm处有一肿块突入食管腔内。临床诊断 Malignant fibrous histiocytoma (abbreviated as malignant fiber group) often occurs in the deep soft tissue, especially in the legs and thighs, followed by the trunk, retroperitoneal, head and neck. However, it is very rare in the malignant group of esophageal organs. Now two cases of biopsy in our department have been reported as follows. Example 1, male, 50 years old. More than 2 months of progressive dysphagia. Esophagoscopy was performed with a lump protruding into the esophageal cavity 25 cm from the incisor. clinical diagnosis