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What is All are true about Glomus body tumor except - and explain in detail?
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 fingeip or in the foot.:670 They account for less than 2% of all soft tissue tumors.The majority of glomus tumors are benign, but they can also show malignant features. Histologically, glomus tumors are made up of an afferent aeriole, anastomotic vessel, and collecting venule. Glomus tumors are modified smooth muscle cells that control the thermoregulatory function of dermal glomus bodies. As stated above, these lesions should not be confused with paragangliomas, which were formerly also called glomus tumors in now-antiquated clinical usage. Glomus tumors do not arise from glomus cells, but paragangliomas do. Malignant glomus tumors, or glomangiosarcomas, are extremely rare and usually represent a locally infiltrative malignancy. However, metastases do occur and are usually fatal. Ref Harrison 20th edition pg 556