Clinicopathologic Spectrum of Xanthogranulomatous Pyelonephritis: A Single Center Experience over 8 Years

Xanthogranulomatous pyelonephritis (XGP) is a chronic pyelonephritis subtype in which destruction of the renal parenchymal occurs, resulting in progressive loss of kidney functions. Although middle age is the predominant age group affected, but it can be spotted at any age. There is accumulation of macrophages (lipid-laden), leading to renal parenchymal destruction and fibrosis. In this study, we present our data of 15 patients who had undergone nephrectomy and had biopsy-proven XGP. XGP constituted 4.53% of the 331 nephrectomies performed for infective causes over a period of 8 years. All our patients had undergone unilateral total nephrectomy. Demographic and clinical data were analyzed after taking consent from all the patients. The age range of patients in our study was 18–65 years with a mean age of 43.93 ± 13.86 years. Ten (66.6%) of our patients were females. Diabetes was present in 40% of the patients. Three patients had imaging, suggestive of pyonephrosis, 3 had perinephric collection and 9 patients (60%) had concomitant nephrolithiasis. All the kidneys were grossly enlarged and were nonfunctional on renal scintigraphy. XGP is a form of chronic pyelonephritis, which, although less common, is devastating because of destruction of the renal parenchyma and associated morbidity. Clinicoradiologic correlation cannot be overemphasized. Definitive diagnosis is established through histopathologic examination

Histopathological Spectrum of Nephrectomies; a Single Centre Experience of over 14 Years

Nephrectomy is conducted either as an open or a laparoscopic procedure for a variety of clinical indications. These include both neoplastic and non-neoplastic conditions, such as the non-functioning kidney. In many patients the final diagnosis is established on the histopathology of the retrieved kidney. In this study, retrospective analysis of data of last 14 years was studied pertaining to the number and indications of nephrectomy at the present study centre. Demographic and clinical details were assessed. Gross and microscopic histopathological details were recorded. Diagnosis was established on the basis of clinical features and histopathology. A total of 638 total nephrectomy specimens were received. Of these, 280 cases were of neoplastic and 358 of non-neoplastic lesions, with a male-to-female ratio of 1.21:1. The age range varied widely according to clinical manifestations. The age range in the present study was 5–84 years. Patients operated for non-neoplastic disorders were younger (mean age: 38.1 years) than those operated for neoplastic disorders (mean age: 54.4 years). Clear renal cell carcinoma (RCC) was the commonest RCC type (150 patients) followed by papillary RCC (51 cases). Nephrectomy is done due to both benign and malignant clinical indications as observed in this study. The most common indication was chronic pyelonephritis with the non-functioning kidney