Fernando Gálvez Montosa, UGC Oncología Médica, Hospital Universitario de Jaén, Jaén, Spain
Javier Requena Aguilar, UGC Oncología Médica, Hospital Universitario de Jaén, Jaén, Spain

A 47-year-old patient with no history of interest consulted his primary care doctor for a lump in the right buttock that had grown progressively in the past 3 months, which was painful when sitting down.