On pararenal pseudocysts

Abstract

Two cases of pararenal pseudocyst are described—one of them after pyelotomy for recurrent stone and the second with pyeloplasty. In both patients nephrectomy could not be avoided. The early diagnosis of pararenal pseudocyst is very important as the corresponding kidney might be impaired seriously within a comparatively short period. Therefore it is of great importance to make control intravenous urograms 3–4 weeks after the trauma or 4–6 weeks after the operation in cases in which a pararenal pseudocyst may appear (conservatively treated closed traumas of the kidney, conditions after operations upon the renal pelvis, ureteropelvic junction and the upper ureter). The author suggests early surgical treatment in such cases to prevent the formation of pararenal pseudocysts in patients with closed kidney traumas, with opening of the collecting system. In cases in which an intrarenal pelvis is present and when big stones should be removed, an intrasinous transverse pyelotomy after Gil Vernet is to be preferred.