... to the institution of long-term dialysis or transplantation. Sonographic examination done on these patients indicated that 7 had renal papillary necrosis (RPN). The sonographic features were renal papillary calcifications surrounding the central sinus in a complete or incomplete garland pattern. In 5...

... out of 20 patients on maintenance dialysis due to other diseases than AN showed renal calcifications forming an approximate garland arrangement. In these patients sonography may therefore indicate AN only in very characteristic cases. We believe that renal papillary calcifications surrounding...