title: [Pulmonary staple granuloma mimicking lung cancer; report of a case].
abstract: A 67-year-old man was referred to our hospital with chief complaints of bloody sputum and an abnormal chest shadow. He had a history of chronic renal failure and surgery for right pneumothorax. During dialysis treatment 2 years ago, an examination revealed a mass shadow with spiculation in the apex of the right lung. Subsequently, he noted bloody sputum, and the shadow became larger. Serum Progastrin-releasing-peptide (GRP) levels remained within the range of 70-80 pg/ml at the previous clinic, but were elevated to 109 pg/ml on admission to our hospital. These findings suggested lung cancer developing around the scar due to pneumothorax surgery, and we performed an operation. The resected tumor was a granuloma formed around a staple with a polytetra-fluoroethylene (PTFE) sheet, showing no evidence of malignancy. The patient's postoperative course was uneventful, and the serum Pro-GRP level fell to 60 pg/ml.
authors.affiliation: Department of Thoracic Surgery, Iwate Prefectural Central Hospital, Morioka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Sawada
authors.forename: Y
authors.initials: Y
authors.lastname: Watanabe
authors.forename: H
authors.initials: H
authors.lastname: Oura
authors.forename: M
authors.initials: M
authors.lastname: Handa
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D015745:Granuloma, Foreign-Body / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis* / Q000209:etiology; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D011138:Polytetrafluoroethylene / Q000009:adverse effects; D013537:Sutures / Q000009:adverse effects
chemical_list: D011138:Polytetrafluoroethylene