平滑肌瘤为常见的肌组织良性肿瘤，多发于子宫，其次易发于胃肠道，发生于鼻腔上颌窦者罕见。我院收治1例，报道如下。1病例报告患者，女，17岁。因渐进性左鼻塞伴间断性左鼻出血半年余，加重1周，于1993年8月11回住院。检查：贫血貌，一般情况尚可，鼻面部无畸形。左鼻腔内为 Leiomyoma is a common benign tumor of the muscle tissue, mainly in the uterus, followed by prone to the gastrointestinal tract, occurred in the nasal cavity of the maxillary sinus rare. A hospital admitted to our hospital, reported as follows. 1 case report patient, female, 17 years old. Progressive left nasal obstruction with intermittent left nasal bleeding more than six months, an increase of 1 week, in 1993 August back to hospital. Check: anemia appearance, the general situation is acceptable, nasal facial deformity. Left nasal cavity for