Pulmonary lymphangitic sarcomatosis from cutaneous angiosarcoma: an unusual presentation of diffuse interstitial lung disease.

Pulmonary lymphangitic sarcomatosis (PLS) is not much recognized clinically although it shows similar pathological patterns and diagnostic features to pulmonary lymphangitic carcinomatosis (PLC). We report a case with hand angiosarcoma whose chest X-ray findings revealed a diffuse interstitial pattern consistent with lymphangitic spreading. The final diagnosis was made by open lung biopsy. The clinical, diagnostic and pathological features of this disease process are reviewed.