Background: A 48-year-old woman was referred to our hospital for evaluation of a soft tissue mass at her right ankle.At initial presentation, Home 5 years earlier, her general practitioner thought of a benign lesion and suggested to remove the mass.At the time, no additional imaging was requested.Over the years, the swelling was slowly growing but remained painless.Now, on clinical examination, a mass lesion was seen, located posterior of the lateral malleolus, consisting of a firm mass fixed to the surface underneath.
The estimated size Base Coat of the tumor was 2 x 6 cm, which gave rise to suspicion of a malignancy.