저자들은 학교신체 검사상 시행한 흉부 방사선 검사에서 우연히 발견된 좌측 폐문 상부의 종양성 병변을 주소로 내원한 13세 남아에서 종괴제거 수술 후 병리학적 검사로 확진된 폐실질의 염증성 가성종양 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

Inflammatory pseudotumor of the lung is considered to be a rare, benign, neoplastic lesion, consisting mainly of spindle mesenchymal cells, sometimes in such a way that its histological appearance mimics that of a spindle cell sarcoma, fibrous histiocytoma or fibrosarcoma. A case of inflammatory pseudotumor of the lung occurring in a 13-year-old boy is reported with pathologic findings, including its ultrastructure. The patient had had no symptoms and accidentally discovered his condition after a chest X-ray examination at a regular school physical check up. The mass was located in the suprahilar area of the left lung. Exploratory thoracotomy revealed a large mass that was removed, together with the left upper lobe of the lung. Microscopically, the mass was composed of numerous interstitial inflammatory cells, mainly lymphoplasma cells. Ultrastructurally, the spindle-shaped mesenchymal cells were arranged haphazadly and the normal pulmonary structure was nearly totally destroyed. Emphasis is given to complete resection of the tumor for both diagnostic and therapeutic purposes. [Pediatr Allergy Respir Dis(Korea) 2006;16:248-252]