Malignancy in Membranous Nephropathy: Evaluation of Incidence

Background. Membranous nephropathy (MN) can be associated with malignancy. However, the relative risk for malignancy remains unclear. It has been reported that higher numbers of inflammatory cells seen in the glomeruli at biopsy correlate with the occurrence of malignancy in patients with MN and mig...

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Main Authors: Basil Alnasrallah, John F. Collins, L. Jonathan Zwi
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:International Journal of Nephrology
Online Access:http://dx.doi.org/10.1155/2017/8409829
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author Basil Alnasrallah
John F. Collins
L. Jonathan Zwi
author_facet Basil Alnasrallah
John F. Collins
L. Jonathan Zwi
author_sort Basil Alnasrallah
collection DOAJ
description Background. Membranous nephropathy (MN) can be associated with malignancy. However, the relative risk for malignancy remains unclear. It has been reported that higher numbers of inflammatory cells seen in the glomeruli at biopsy correlate with the occurrence of malignancy in patients with MN and might be used to direct screening. Methods. We examined the occurrence of malignancy in 201 MN patients in Auckland, New Zealand. We also examined the pathology of renal biopsies from 17 MN patients with malignancies and compared the number of inflammatory cells per glomerulus with matched control patients with MN but no malignancy. Results. 40 malignancies were identified in 37 patients, 28 of which occurred after the MN diagnosis. The standardized incidence ratio (SIR) was 2.1 (95% CI, 1.3–2.85) which was similar between patients ≥ 60 years and those <60 years. The median number of inflammatory cells per glomerulus did not differ between MN patients with and without malignancy at 1.86 (IQR, 1.17–2.7) and 2.07 (IQR, 1.17–3.65), respectively (p value 0.56). Conclusions. The relative risk of malignancy in MN patients was similar across different age groups. The number of inflammatory cells per glomerulus did not differentiate between MN patients with and without malignancies.
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spelling doaj-art-b366f768c9e947cf809a21112672e9962025-02-03T07:25:40ZengWileyInternational Journal of Nephrology2090-214X2090-21582017-01-01201710.1155/2017/84098298409829Malignancy in Membranous Nephropathy: Evaluation of IncidenceBasil Alnasrallah0John F. Collins1L. Jonathan Zwi2Department of Nephrology, Auckland City Hospital, 2 Park Drive, Grafton, Auckland 1023, New ZealandDepartment of Nephrology, Auckland City Hospital, 2 Park Drive, Grafton, Auckland 1023, New ZealandDepartment of Pathology, Auckland City Hospital, 2 Park Drive, Grafton, Auckland 1023, New ZealandBackground. Membranous nephropathy (MN) can be associated with malignancy. However, the relative risk for malignancy remains unclear. It has been reported that higher numbers of inflammatory cells seen in the glomeruli at biopsy correlate with the occurrence of malignancy in patients with MN and might be used to direct screening. Methods. We examined the occurrence of malignancy in 201 MN patients in Auckland, New Zealand. We also examined the pathology of renal biopsies from 17 MN patients with malignancies and compared the number of inflammatory cells per glomerulus with matched control patients with MN but no malignancy. Results. 40 malignancies were identified in 37 patients, 28 of which occurred after the MN diagnosis. The standardized incidence ratio (SIR) was 2.1 (95% CI, 1.3–2.85) which was similar between patients ≥ 60 years and those <60 years. The median number of inflammatory cells per glomerulus did not differ between MN patients with and without malignancy at 1.86 (IQR, 1.17–2.7) and 2.07 (IQR, 1.17–3.65), respectively (p value 0.56). Conclusions. The relative risk of malignancy in MN patients was similar across different age groups. The number of inflammatory cells per glomerulus did not differentiate between MN patients with and without malignancies.http://dx.doi.org/10.1155/2017/8409829
spellingShingle Basil Alnasrallah
John F. Collins
L. Jonathan Zwi
Malignancy in Membranous Nephropathy: Evaluation of Incidence
International Journal of Nephrology
title Malignancy in Membranous Nephropathy: Evaluation of Incidence
title_full Malignancy in Membranous Nephropathy: Evaluation of Incidence
title_fullStr Malignancy in Membranous Nephropathy: Evaluation of Incidence
title_full_unstemmed Malignancy in Membranous Nephropathy: Evaluation of Incidence
title_short Malignancy in Membranous Nephropathy: Evaluation of Incidence
title_sort malignancy in membranous nephropathy evaluation of incidence
url http://dx.doi.org/10.1155/2017/8409829
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AT ljonathanzwi malignancyinmembranousnephropathyevaluationofincidence