原发疾病 meaning in Chinese

underlying disease

Conclusion ( 1 ) most non - thoracotraumatic pneumomediastinum are secondary to the underlying diseases . therefore , the effective treatment of primary diseases are important . ( 2 ) a satisfactory effect must be based on different surgical techniques according to the different clinical symptoms and age of patients
结论( 1 )非胸外伤性纵隔气肿多为继发性的，在进行外科治疗的同时，应加强原发疾病的治疗； ( 2 )对非胸外伤性纵隔气肿应根据其临床症状的轻重和不同年龄采取不同的外科治疗方法，才能获得满意疗效。