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Uncommon of the uncommon: malignant perivascular epithelioid cell tumor of the lung
Hyun-Ju Lim1, Ho Yun Lee, Joungho Han
1Department of Radiology and Center for Imaging, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.
Abstract:
A perivascular epithelioid cell (PEC) tumor is a rare mesenchymal tumor characterized by abundant cytoplasmic Periodic acid-Schiff positive glycogen (also called sugar tumor or clear cell tumor of the lung for this characteristic) and is mostly benign. We report a case of a 63-year-old man who presented with an enlarging mass on chest radiograph. After a thorough workup, diagnosis of malignant pulmonary PEC tumor with lung to lung metastases was established. Herein, the difficulties of diagnosis and management we confronted are described.
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