A varix s a dilated vein or venule. It presents as a relatively small, localized, elevated, blue or purple lesion. It is compressible and blanches upon pressure unless a thrombus has formed within it. A thrombosed varix is firm and does not blanch, Varices are most common on the ventral surface of the tongue, floor of the mouth, lips, and buccal mucosa. Varices increase in number with age and may also be the result of trauma. Once avarix has been diagnosed it needs no further treatment. A thrombosed varix oftencannot be clinical y distinguished from a nevus, and biopsy and microscopic examination are necessary to establish a definitive diagnosis.