Abstract
AimThis study aims to evaluate the results of patients we treated with nephrectomy due to Xanthogranulomatous pyelonephritis (XGP) and the effects of kidney volume on the results.Patients and methodsRecords of 22 patients who underwent nephrectomy due to renal masses at our clinic between January 2008 and May 2018 and whose pathology results indicated XGP were retrospectively evaluated. The computed tomography (CT) measurement of the kidney volumes of the patients was calculated as the product of the longest length, width, and height of the kidney. The mean kidney volume of the patients was calculated and the patients were distributed into two groups: those that presented volumes below average (Group 1) and above average (Group 2). The patients’ mean ages, operative duration, hospitalization days, differences in pre- and postoperative hemoglobin and creatinine levels, and postoperative complications were compared across groups.ResultsGroup 1 consisted of 12 patients and Group 2 of 10 patients. The mean kidney volume of the patients was calculated as 33.4 cm3 ± 26.0 cm3. The mean kidney volume of the patients was 15.8 cm3± 9.9 cm3 in Group 1 and 56.8 cm3 ± 21.8 cm3 in Group 2. There were no statistical differences between the two groups in terms of operative times, preop-postop hemoglobin (Hgb) levels and complications.ConclusionIn cases where XGP is considered probable, the priority in preoperative CT must be to thoroughly evaluate the relationship of the kidney with the surrounding tissue and organs rather than to investigate the patients’ kidney volumes.
Highlights
First described by Schlagenhaufer in 1916, Xanthogranulomatous pyelonephritis (XGP) is a chronic and serious bacterial infection of the renal parenchyma [1]
Group 1 consisted of 12 patients and Group 2 of 10 patients
We aimed to investigate the clinical properties, difficulties encountered during surgery, and effects of kidney volume on operative values and complications seen in patients who underwent open or laparoscopic nephrectomy due to XGP at our clinic
Summary
First described by Schlagenhaufer in 1916, Xanthogranulomatous pyelonephritis (XGP) is a chronic and serious bacterial infection of the renal parenchyma [1]. The involvement of the renal parenchyma following infection can present a diffused or focal pattern. The diffused form is more prevalent than the focal form [4]. Prepathological diagnosis of XGP can be made when certain findings are present in a computed tomography (CT) scan. Among these findings, the presence of low-attenuation lesions of 10-15 Hounsfield Unit (HU) and minimal or absent contrast in the renal parenchyma are suggestive of XGP [5]. CT images may provide insight into the invasion of the renal parenchyma with the surrounding tissues and organs [5]
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