Glomus tumor was also the name formerly (and incorrectly) used for a tumor now called a paraganglioma.A glomus tumor (also known as a "solitary glomus tumor," "solid glomus tumor,") is a rare neoplasm arising from the glomus body and mainly found under the nail, on the fingertip or in the foot. They account for less than 2% of all soft tissue tumors. [Source: Wikipedia ]