M ethods to divide our hospital's lunger of recent years who have difficul t and p ositive phlegm smear phthisic into two groups(check group and cure group) and pr ocess random analysis.

对我院近年来难性肺结、片阳性病人随分为两(对照疗)。对照化疗方案相同,疗加用卷曲霉素,观察疗效。