Mills和Matthens 1956年首次报告了一例皮肌炎致肺损害。国内孔氏于1960年报告了一例。以后多发性肌炎(Polymyositis)或皮肌炎(Dermatomyositis)(简称PM-DM)所致的肺损害逐渐被人重视。但其发生率各家报告不一。1974年Franzier统计占4％(10/230)。1981年黄桂远等报告占33％(23/69)。1983年施占义等报告占26％(25/94)。我院1983年前未收治皮肌炎患者,于1984～1985年收治5例均有不同程度的肺损害。 Mills and Matthens first reported a case of dermatomyositis-induced lung damage in 1956. Kong Kong in 1960 reported an example. Later, polymyositis or dermatomyositis (Dermatomyositis) (PM-DM) -induced lung damage gradually been taken seriously. However, the incidence of various reports vary. Franzier statistics for 1974 accounted for 4% (10/230). In 1981, Huang Guiyuan and other reports accounted for 33% (23/69). In 1983, Shi Zhanyi and other reports accounted for 26% (25/94). In our hospital before 1983, patients with dermatomyositis were not treated, and 5 cases were treated in 1984 ~ 1985 with varying degrees of lung injury.