[Sonography in the diagnosis of pyelonephritis scars].

Radiological and ultrasound examinations were performed in 34 women with recurrent urinary tract infection, as part of a prospective study of pyelonephritis. Ultrasound was found to be valuable in the recognition of new pyelonephritic scars and for screening. In assessing ultrasound and radiological findings the criteria of Hodson are equally valuable in differential diagnosis. Taking into account radiation exposure, ultrasound should not replace intravenous urography in this field, but if regular serial examinations are necessary it can be used alternately with urography.