A Case of Benign Clear Cell Tumor of the Lung

Abstract

A 29 years old female with benign clear cell tumor of the lung, which was first reported by Liebow & Castleman, was presented. She was accidentally found to have a coin lesion in the left lower lung field at the chest X-ray examination.
The tumor was easily enucleated from pulmorary parenchyma. Grossly, the tumorwas spherical, measuring 2.9×1.8×2.0 cm and well demarcated. There was no evidence of involvement of a bronchus or major vessels.
Microscopically, the tumor was composed of large, clear polygonal cells with glycogen granules and many thin walled vessels. The Reticulum stain showed non-epithelialpattern.