原发性肺恶性纤维组织细胞瘤(PPMFH),国内外报告仅10余例,现将我院经手术和病理证实的PPMFH合并肺囊肿一例报告如下: 患者,男,39岁。因为胸痛50余日,近一周来气短而入院。全身体检未见异常。胸片和体层片见右前中纵隔有一6cm×8cm×8cm肿块,密度均匀,前缘有分叶。两肺尖散在小钙化点(见附 Primary lung malignant fibrous histiocytoma (PPMFH) has been reported only at home and abroad in more than 10 cases. A case of PPMFH with lung cyst confirmed by surgery and pathology in our hospital is reported as follows: Patients, male, 39 years old. Because of chest pain for more than 50 days, she has been hospitalized for shortness of breath in the past week. There was no abnormality in the entire physical examination. The chest and body slices showed a 6cm × 8cm × 8cm mass in the medial mediastinum at the right front. The density was even and the front edge was split. Two lung tips scattered in small calcifications (see attached