title: Rarities among the commonplace: enzyme deficiency, spontaneous pneumothorax and chronic obstructive pulmonary disease.
mesh_terms: D000328:Adult; D002908:Chronic Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D011030:Pneumothorax / Q000201:enzymology*; D011656:Pulmonary Emphysema / Q000201:enzymology*; D011878:Radiotherapy; D012737:Sex Factors; D013906:Thoracoscopy