A case of an unusual evolution for splenic trauma is reported. Following a blunt abdominal trauma a 48 year-old female patient developped a voluminous tumor on the upper left abdominal quadrant. The diagnosis of subcapsular splenic ruptures and the formation of a traumatic splenic pseudocyst was made clinically and by abdominal computadorized tomography and splenic cintilography with Tc99. Due to the great volume of the pseudocyst, with very few viable splenic tissue, a splenectomy was performed