A case of perivascular epithelioid cell tumor, a PEComa, of the lung (clear cell tumor of the lung, CCTL)

Abstract

We report a case of clear cell tumor of the lung (CCTL) in a male in his 40’s. Imprint cytology revealed epithelioid cell clusters with clear or granular cytoplasm and small round or short spindle-shaped nuclei.

Scattered intranuclear inclusion bodies were noted. Immunocytochemically, the tumor cells were positive for HMB-45. Although CCTL is a rare entity, a knowledge of the characteristic cytologic and immunocytochemical findings including positivity for HMB-45 is helpful for making a correct diagnosis of CCTL.