A 70-year-old man presented with a mass on his right buttock, which measured 7 cm in diameter, and a swelled right inguinal lymph node. He noticed the mass 20 years ago.
A 70-year-old man presented with a mass on his right buttock, which measured 7 cm in diameter, and a swelled right inguinal lymph node. He noticed the mass 20 years ago.