患者男，30岁。1997年2月以右面部肿块入院。1979年出现右鼻阻，反复鼻出血；1980年右面部出现一核桃大小肿块，伴疼痛，无发热，肿块逐渐长大；1983年肿块破溃，至入院时一直未愈。患病以来无其它并发症状，入院后心、肺、肝、肾检查无异常发现。专科检查：①右面部巨大骨性肿 Male patient, 30 years old. February 1997 to the right facial mass admission. In 1979, the right nasal resistance appeared and repeated nosebleeds. In 1980, a walnut-sized mass appeared on the right side with pain, no fever, and the mass gradually grew up. In 1983, the mass ruptured and was not cured until admission. Since the illness has no other complications, after admission, heart, lung, liver and kidney no abnormal findings were found. Specialist examination: ① right facial bony swelling