Epidemiologic data of adult native biopsy-proven renal diseases in Croatia
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There is a paucity of epidemiological data on biopsy-proven renal disease in Croatia. The purpose of this report is a review of clinical and histological data, over a period of 15 years, from the single biggest adult native renal biopsy center in Croatia.
This report includes data from 922 adult native renal biopsies in patients referred from the whole country and performed in our center from 1996 till February 2012. Data on age, gender, serum creatinine, urine sediment, 24-h proteinuria, clinical syndrome and histological diagnosis were collected and analyzed retrospectively. In all patients, light, immunofluorescence and electron microscopic analysis was performed.
The median age of the patients was 48 years (interquartile range 36–59 years), and the majority of patients were men (57.8 %). The most common indication for renal biopsy was nephrotic syndrome (40.3 %) followed by asymptomatic urinary abnormalities (31.7 %). The most common biopsy-proven renal disease in total was IgA glomerulonephritis (19.3 %), followed by focal segmental glomerulosclerosis (FSGS) (15.8 %) and membranous glomerulonephritis (9.2 %). In men, similar results were found, while in women, the most common were hereditary nephritis (13.4 %), FSGS (12.9 %) and connective tissue disease–related glomerular disorders (11.6 %).
The presented data are an important contribution to the better understanding of the epidemiology of biopsy-proven renal disease in Croatia and Europe throughout comparison with other registry data. This data should be the basis for the formation of Croatian Registry of Renal Biopsies.
KeywordsBiopsy-proven renal disease Epidemiology Glomerulonephritis Renal biopsy Renal pathology Registry
Amyloidosis and other renal diseases with organized deposits
Acute nephritic syndrome
Acute postinfectious glomerulonephritis
Acute tubular injury
Acute tubulointerstitial nephritis
Asymptomatic urinary abnormalities
Biopsy-proven renal disease
Chronic nephritic syndrome
Glomerulonephritis associated with connective tissue diseases
Chronic tubulointerstitial nephritis
Diabetic nephropathy and metabolic diseases
Dysgammaglobulinemia associated disorders
Estimated glomerular filtration rate
End stage renal disease
Focal segmental glomerulosclerosis
Minimal change disease
This study was funded by the Croatian Ministry of Science, Education and Sports, project number 198-0000000-0179 (KG) and 198-0000000-3355 (DGLJ).
Conflict of interest
My statement (on behalf of all the authors) is as follows: We state that the results presented in this paper have not been published previously in whole or part, except in abstract form. We do not have any conflict of interest. We have had no involvements that might raise the question of bias in the work reported or in the conclusions, implications, or opinions stated. Ivica Horvatic.