Splenic pseudocyst: preoperative diagnosis with ultrasonography.

Ultrasonography was used to establish the preoperative diagnosis of splenic pseudocyst in a 12-yr-old girl. This procedure was tried after the exact nature of the mass could not be determined from an intravenous pyelogram and a 99m Tc liver-spleen scan. The patient was successfully treated by splenectomy. The advantages of ultrasonography for detecting splenic cysts are emphasized.