The authors report a case of soft tissue tumor discovered fortuitously in a 52 year old woman. This lesion was in the axilla and on standard films was seen as a well-defined radiotransparent zone, accompanied by a typical spiculated bone reaction of the lateral edge of the scapula. CT and MRI confirmed the fatty and noninvasive nature of the lesion. Histopathological examination of the operative specimen showed it to be a parostal lipoma.