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NDT Advance Access originally published online on September 12, 2006
Nephrology Dialysis Transplantation 2006 21(11):3098-3105; doi:10.1093/ndt/gfl237
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© The Author [2006]. Published by Oxford University Press on behalf of ERA-EDTA. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Paulista registry of glomerulonephritis: 5-year data report

Patricia Malafronte1,*, Gianna Mastroianni-Kirsztajn2,*, Gustavo N. Betônico3, João Egídio Romão, Jr4, Maria Almerinda R. Alves5, Maria Fernanda Carvalho6, Osvaldo M. Viera Neto7, Ricardo A. M. Cadaval8, Ronaldo R. Bérgamo9, Viktória Woronik1, Yvoty A. S. Sens10, Mauro S. M. Marrocos11 and Rui T. Barros1

1Universidade de São Paulo, Medicina-Nefrologia, São Paulo, 2Universidade Federal de São Paulo, Medicina-Nefriligia, São Paulo, 3Universidade do Oeste Paulista-UNOESTE, Medicina-Nefriligia, Presidente Prudente, 4Hospital da Beneficência Portuguesa de São Paulo, Medicina-Nefrologia, São Paulo, 5Universidade Estadual de Campinas, Medicina-Nefrologia, Campinas6Universidade Estadual Paulista-Botucatu, Medicina-Nefrologia, Botucatu, 7Universidade de São Paulo-Ribeirão Preto, Medicina-Nefrologia, Ribeirão Preto, 8Pontifícia Universidade Católica de São Paulo-Sorocaba, Medicina-Nefrologia, Sorocaba, 9Faculdade de Medicina do ABC, Medicina-Nefrologia, Santo André, 10Faculdade de Ciências Médicas da Santa Casa de São Paulo, Medicina-Nefrologia, São Paulo and 11Universidade de São Paulo-Hospital Universitário, Medicina-Nefrologia, São Paulo, SP, Brazil

Correspondence and offprint requests to: Prof. Gianna Mastroianni-Kirsztajn, Universidade Federal de São Paulo, Medicina-Nefrologia, São Paulo, SP, Brazil. Email: giannamk{at}uol.com.br

Background. The Paulista Registry of Glomerulopathies was created in May 1999 and comprises several centres of São Paulo, the most populous Brazilian State, that concentrates people from all regions of the country who look for health care.

Methods. This report includes data from 2086 patients from Brazil submitted to renal biopsy due to the presumed diagnosis of glomerular diseases, registered prospectively since May 1999 until January 2005. Data were collected by the integrants of the 11 centres involved, utilizing a standardized questionnaire.

Results. The mean age of the patients was 34.5 ± 14.6 years. Primary glomerular diseases were more frequent in males (55.1%) than in females; on the other hand, secondary glomerular diseases were more frequent in females (71.8%). The most common clinical presentation was nephrotic syndrome and the frequency of hypertension, at this time, was 55.5%. There was a predominance of indication of biopsies in the third, fourth and fifth decades of life. The most common primary glomerular diseases were focal and segmental glomerulosclerosis (29.7%), followed by membranous nephropathy (20.7%), IgA nephropathy (17.8%), minimal change disease (9.1%), membranoproliferative glomerulonephritis (7%), crescentic glomerulonephritis (4.1%), advanced chronic glomerulopathy (4%), non-IgA mesangial glomerulonephritis (3.8%), diffuse proliferative glomerulonephritis (2.5%), focal segmental proliferative glomerulonephritis (1%) and others (0.3%). The most frequent secondary glomerular disease was lupus nephritis, corresponding to 66.2% of the cases, followed by post-infectious glomerulonephritis (12.5%), diabetic nephropathy (6.2%), diseases associated to paraproteinaemia (4.9%), hereditary diseases (4.6%), vasculitis (3.2%), malignancies (0.9.%), secondary focal segmental glomerulosclerosis (0.6%) and others (0.9%).

Conclusion. Focal segmental glomerulosclerosis was the most frequent primary glomerular disease, followed by membranous nephropathy and IgA nephropathy. Lupus nephritis predominated over all the other secondary glomerular diseases.

Keywords: Brazilian registry; epidemiology; glomerulopathy

* First and second authors had equivalent participation in the elaboration of this article.


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