An Unusual Initial Presentation of Lupus Nephritis as a Renal Mass

Lupus nephritis is a frequent manifestation of systemic lupus erythematous. Lupus nephritis usually presents with abnormal urinalysis, proteinuria, and/or renal insufficiency. We report a case of a 48-year-old woman who underwent partial nephrectomy for a fortuitously discovered solid enhancing left...

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Main Authors: Remi Goupil, Annie-Claire Nadeau-Fredette, Virginie Royal, Alexandre Dugas, Jean-Philippe Lafrance
Format: Article
Language:English
Published: Wiley 2015-01-01
Series:Case Reports in Nephrology
Online Access:http://dx.doi.org/10.1155/2015/231974
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author Remi Goupil
Annie-Claire Nadeau-Fredette
Virginie Royal
Alexandre Dugas
Jean-Philippe Lafrance
author_facet Remi Goupil
Annie-Claire Nadeau-Fredette
Virginie Royal
Alexandre Dugas
Jean-Philippe Lafrance
author_sort Remi Goupil
collection DOAJ
description Lupus nephritis is a frequent manifestation of systemic lupus erythematous. Lupus nephritis usually presents with abnormal urinalysis, proteinuria, and/or renal insufficiency. We report a case of a 48-year-old woman who underwent partial nephrectomy for a fortuitously discovered solid enhancing left kidney mass. No neoplastic cells were found in the biopsy specimen; however, the pathology findings were compatible with immune complex glomerulonephritis with a predominantly membranous distribution, a pattern suggestive of lupus nephritis. The mass effect was apparently due to a dense interstitial lymphocytic infiltrate resulting in a pseudotumor. Further investigation revealed microscopic hematuria with a normal kidney function and no significant proteinuria. Antinuclear antibodies were negative, although anti-DNA and anti-SSA/Rho antibodies were positive. A diagnosis of probable silent lupus nephritis was made and the patient was followed up without immunosuppressive treatment. After two years of follow-up, she did not progress to overt disease. To our knowledge, this represents the first case of lupus nephritis with an initial presentation as a renal mass.
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publisher Wiley
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series Case Reports in Nephrology
spelling doaj-art-a442e2934db8421eb96f3bf5197b57ab2025-02-03T01:21:07ZengWileyCase Reports in Nephrology2090-66412090-665X2015-01-01201510.1155/2015/231974231974An Unusual Initial Presentation of Lupus Nephritis as a Renal MassRemi Goupil0Annie-Claire Nadeau-Fredette1Virginie Royal2Alexandre Dugas3Jean-Philippe Lafrance4Nephrology Division, Hôpital Maisonneuve-Rosemont, Montreal, QC, H1T 2M4, CanadaNephrology Division, Hôpital Maisonneuve-Rosemont, Montreal, QC, H1T 2M4, CanadaPathology Department, Hôpital Maisonneuve-Rosemont, Montreal, QC, H1T 2M4, CanadaRadiology Division, Hôpital Maisonneuve-Rosemont, Montreal, QC, H1T 2M4, CanadaNephrology Division, Hôpital Maisonneuve-Rosemont, Montreal, QC, H1T 2M4, CanadaLupus nephritis is a frequent manifestation of systemic lupus erythematous. Lupus nephritis usually presents with abnormal urinalysis, proteinuria, and/or renal insufficiency. We report a case of a 48-year-old woman who underwent partial nephrectomy for a fortuitously discovered solid enhancing left kidney mass. No neoplastic cells were found in the biopsy specimen; however, the pathology findings were compatible with immune complex glomerulonephritis with a predominantly membranous distribution, a pattern suggestive of lupus nephritis. The mass effect was apparently due to a dense interstitial lymphocytic infiltrate resulting in a pseudotumor. Further investigation revealed microscopic hematuria with a normal kidney function and no significant proteinuria. Antinuclear antibodies were negative, although anti-DNA and anti-SSA/Rho antibodies were positive. A diagnosis of probable silent lupus nephritis was made and the patient was followed up without immunosuppressive treatment. After two years of follow-up, she did not progress to overt disease. To our knowledge, this represents the first case of lupus nephritis with an initial presentation as a renal mass.http://dx.doi.org/10.1155/2015/231974
spellingShingle Remi Goupil
Annie-Claire Nadeau-Fredette
Virginie Royal
Alexandre Dugas
Jean-Philippe Lafrance
An Unusual Initial Presentation of Lupus Nephritis as a Renal Mass
Case Reports in Nephrology
title An Unusual Initial Presentation of Lupus Nephritis as a Renal Mass
title_full An Unusual Initial Presentation of Lupus Nephritis as a Renal Mass
title_fullStr An Unusual Initial Presentation of Lupus Nephritis as a Renal Mass
title_full_unstemmed An Unusual Initial Presentation of Lupus Nephritis as a Renal Mass
title_short An Unusual Initial Presentation of Lupus Nephritis as a Renal Mass
title_sort unusual initial presentation of lupus nephritis as a renal mass
url http://dx.doi.org/10.1155/2015/231974
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