The Collaborative International Dictionary of English v.0.48:
Epithelioma \Ep`i*the`li*o"ma\, n. [NL. See Epithelium, and -oma.] (Med.) A malignant growth containing epithelial cells; -- called also epithelial cancer. [1913 Webster]WordNet (r) 3.0 (2006):
epithelioma n 1: a malignant tumor of the epithelial tissue