恶性间叶瘤是一种罕见的、恶性度很高的肿瘤。国内报告极少,原发于鼻窦者更为罕见。作者遇见一例,报告如下:患者郭××,女性,16岁,农民,住院号16309。因左侧鼻腔阻塞,流血性鼻涕,偶有轻度头昏,额部出现小包块及左眼球突出二月余,而于1979年5月21日以额窦囊肿与鼻息肉收入院。一年前曾有鼻部外伤史。 Malignant mesothelioma is a rare, highly malignant tumor. Domestic reports are rare, and those with primary sinuses are even rarer. The author encountered one case and reported as follows: Patient Guo ××, female, 16 years old, farmer, hospital number 16309. Due to obstruction of the left nasal cavity, bleeding nose, occasional mild dizziness, small masses appear in the forehead and the left eye ball protrudes more than two months, and in May 21, 1979, the frontal sinus cyst and nasal polyps were admitted to the hospital. A history of nasal trauma occurred a year ago.