肺癌切除後40ヵ月を経て出現・増大し胸膜播種再発が疑われたSchloffer腫瘍

Schloffer Tumor that Appeared and Increased 40 Months after Resection of Lung Cancer and was Suspected of Recurrence of Pleural Dissemination

Schloffer腫瘍は，手術瘢痕部の絹糸などの異物や肉芽腫を核として発生する遅発性・慢性炎症性結合組織性腫瘍である1）．

The case is a 50-year-old woman. Video-assisted thoracic surgery （VATS） left upper division segmentectomy was performed for adenocarcinoma through a postero-lateral incision. The pathological result was stage ⅠA. A chest computed tomography （CT） examination 40 months after the operation revealed a nodule in contact with the left 6th rib. A recurrence due to pleural dissemination was suspected in the PET/CT examination, but the possibility of reactive granulation was also considered. Two months later, chest CT reexamination showed an enlargement of the nodule, and reoperation was performed. A fibrous structure that appears to be a silk thread for closing chest at the 1st operation was found on the chest wall. The pathological examination revealed chronic suppurative pleuritis and organizing pneumonia without malignancy, leading to a diagnosis of Schloffer tumor.