We report the cases of 3 patients with brucellar gonadal abscess who were examined with gray-scale and color Doppler sonography. In these 3 cases, sonography revealed a thick-walled avarian (n = 2) or testicular (n = 1) abscess. Duplex Doppler sonography indicated a low-resistance type of flow in all 3 patients. The diagnosis of brucellar gonadal abscess is difficult, because it may have a misleading tumor-like appearance. Awareness of the imaging findings of gonadal abscess in patients with brucellosis and correlation with the results of serologic testing can allow early diagnosis, especially in endemic areas. (c) 2007 Wiley Periodicals, Inc.