[Pulmonary suture granuloma with Aspergillus after partial resection for lung cancer; report of a case].

We reported an extremely rare case of suture granuloma using monofilament nylon. A 76-year-old female had suffered from cough for 1 month. She had undergone partial resection for pulmonary squamous cell carcinoma 2 years previously. Chest X-ray and computed tomography (CT) detected a mass shadow adjacent to the previous surgical repair, and local recurrence of carcinoma was suspected. Thoracotomy was performed. Incisional biopsy revealed no recurrence sign, therefore partial resection was performed. Histopathological study and bacterial culture resulted suture granuloma with Aspergillus. The granuloma was caused not by foreign body reaction but by transbronchial infection. This case emphasizes that suture granuloma as pseudotumor may be indistinguishable from recurrent cancer.