Analysis of 39 cases of xanthogranulomatous pyelonephritis with emphasis on CT findings.

Objective: In this retrospective study a review of the clinical, laboratory and radiologic features of 39 cases of xanthogranulomatous pyelonephritis (XGP) is presented. CT characteristics of XGP are analyzed in detail and the relevant literature is reviewed in order to determine the most typical among them.

Material And Methods: Pathologic material from 39 patients suffering from XGP was reviewed in order to confirm the initial diagnosis.

Acute appendicitis: effect of increased use of CT on selecting patients earlier.

Purpose: To explore the possibility of a relationship between increased use of computed tomography (CT) for diagnosis of appendicitis and increased occurrence of minimal or subtle CT and surgical findings.

Materials And Methods: Two groups, each with 50 consecutive patients who underwent CT before appendectomy in 1997 and 2000, were compared. CT scans and surgery-pathology reports were evaluated on a six-grade scale from normal to abscess or inflammatory mass.