Department of Radiology, Guro Hospital, Korea University College of Medicine, Korea. kahkim@korea.ac.kr
Published online: September 1, 2003.
ABSTRACT
We present a case of acute pyelonephritis with an atypical imaging manifestation mimicking renal cyst on initial ultrasonogram (US). On follow-up US, this cyst mimicking lesion transformed to a mass with heterogeneous echo and then disappeared completely following treatment.