An Atypical Cystic Renal Mass in a Patient with IgG4-Related Kidney Disease: A Case Report.

IF 1 4区医学 Q3 MEDICINE, GENERAL & INTERNAL

Internal Medicine Pub Date : 2025-03-29 DOI:10.2169/internalmedicine.4691-24

Chisato Minezaki, Hiroki Uchida, Kouhei Todaka, Nobuchika Koumatsu, Jun Okita, Akiko Kudo, Takeshi Nakata, Akihiro Fukuda, Naoya Fukunaga, Noriko Uesugi, Hirotaka Shibata

引用次数: 0

Abstract

We herein report a case of IgG4-related kidney disease (IgG4-RKD) with an atypical cystic renal mass in a 73-year-old man. Computed tomography (CT) revealed diffuse renal enlargement and a cystic mass in the left kidney. Blood tests revealed elevated IgG and IgG4 levels. A renal biopsy led to the IgG4-RKD diagnosis. The cystic mass was deemed to be benign based on the clinical, imaging, and ultrasonography findings. No malignancy or abscess formation was noted. Both the renal function and IgG4 levels improved after steroid treatment; moreover, the mass shrunk, suggesting an IgG4-RKD etiology. Cystic renal masses with capsule formation should be considered in patients presenting with IgG4-RKD.

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来源期刊

Internal Medicine 医学-医学：内科

CiteScore

1.90

自引率

8.30%

发文量

审稿时长

2.2 months

期刊介绍： Internal Medicine is an open-access online only journal published monthly by the Japanese Society of Internal Medicine. Articles must be prepared in accordance with "The Uniform Requirements for Manuscripts Submitted to Biomedical Journals (see Annals of Internal Medicine 108: 258-265, 1988), must be contributed solely to the Internal Medicine, and become the property of the Japanese Society of Internal Medicine. Statements contained therein are the responsibility of the author(s). The Society reserves copyright and renewal on all published material and such material may not be reproduced in any form without the written permission of the Society.