Pediatr Allergy Respir Dis.  2006 Sep;16(3):248-252.

A Case of Pulmonary Inflammatory Pseudotumor

• Koh H
• Chae HW
• Lee SJ
• Yoon BS
• Jang GC
• Kang KH
• Kie JH

Abstract

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.

Keyword

Inflammatory pseudotumor; Lung; Spindle mesenchymal cell; Child

MeSH Terms

Adolescent
Child
Fibrosarcoma
Granuloma, Plasma Cell
Histiocytoma, Benign Fibrous
Humans
Lung
Male
Plasma Cell Granuloma, Pulmonary*
Sarcoma
Thoracotomy
Thorax