在临床及X 线诊断工作中,肺部孤立性球形病变并非少见,尤以球形肺炎及肺炎假瘤易和肺部肿瘤相混淆。为此将我院自1982年4月至1983年7月发现的4例肺部圆形及类圆形病灶,经临床治疗、动态观察证实为球形肺炎的病例报告如下,并结合文献探讨其与肺癌的鉴别诊断问题。例1:男性,50岁。咳嗽、右胸痛、偶咯铁锈样 In clinical and X-ray diagnosis, isolated sphenoid pulmonary lesions are not uncommon, especially spherical pneumonia and pseudohypophyseal pneumonia and lung cancer confused. To this end our hospital from April 1982 to July 1983 found 4 cases of lung round and roundish lesions, after clinical treatment, dynamic observation confirmed spherical pneumonia cases are as follows, and combined with the literature to explore its Differential diagnosis of lung cancer. Example 1: Male, 50 years old. Cough, right chest pain, even slightly rusty