A Case of Focal Organizing Pneumonia

Abstract

A 69-year-old man who visited a neighboring hospital because of coughing was detected to have a solitary nodule 2.1 cm in maximum diameter in the left segment 8 on a chest CT scan and was referred to our hospital. A FDG-PET scan showed an abnormal uptake of FDG in the area and the CYFRA level was elevated. Primary lung cancer was suspected and partial pneumonectomy was performed to make the definite diagnosis. Intraoperative frozen section diagnosis confirmed infiltration of lymphocytes, but we could not obtain any definite diagnosis of malignant disease. Since a possibility of malignant neoplasm could not be ruled out, left S8 segmentectomy was added. The permanent specimen revealed lymphocytic infiltration into the interalveolar septa and polypoid fibrous tissue at the peripheral airways. Focal organizing pneumonia was thus diagnosed. No postoperative therapies were added, but there have been no signs of recurrence as of 8 months after the operation.