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Retroperitoneal fibrosis in the era of immunoglobulin G4-related disease
Kidney Research and Clinical Practice ; : 42-48, 2019.
Article in English | WPRIM | ID: wpr-758976
ABSTRACT

BACKGROUND:

Retroperitoneal fibrosis (RPF) is a rare disease characterized by fibroinflammatory tissue in the periaortic or periiliac retroperitoneum, where it frequently encases ureters. There is emerging evidence that a subset of this disease is part of a spectrum of multisystemic autoimmune diseases collectively referred to as “immunoglobulin G4 (IgG4)-related disease”.

METHODS:

We retrospectively analyzed 27 idiopathic RPF patients and identified a subset as IgG4-related RPF, which we categorized according to recently published comprehensive diagnostic criteria. We compared clinical and laboratory characteristics and response to treatment between the two groups.

RESULTS:

Of 27 total patients, 16 (59.3%) were diagnosed as having IgG4-related RPF, and these were predominantly male. They were also significantly older and more likely to have other organ involvement, hydronephrosis, and postrenal acute kidney injury (AKI) compared to those with idiopathic RPF. However, there was no difference in response rate to systemic steroid treatment.

CONCLUSION:

IgG4-related RPF accounts for a substantial portion of RPF cases previously identified as “idiopathic RPF” in Korea. Clinical and laboratory characteristics of IgG4-related RPF are similar to those of idiopathic RPF except for a striking male predominance, older age, and higher incidence of postrenal AKI in IgG4-related RPF. More comprehensive, prospective studies are needed to clearly distinguish IgG4-related RPF from idiopathic RPF based on clinical manifestation and to further assess treatment response and long-term prognosis.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Prognosis / Retroperitoneal Fibrosis / Autoimmune Diseases / Strikes, Employee / Ureter / Immunoglobulins / Incidence / Prospective Studies / Retrospective Studies / Rare Diseases Type of study: Incidence study / Observational study / Prognostic study / Risk factors Limits: Humans / Male Country/Region as subject: Asia Language: English Journal: Kidney Research and Clinical Practice Year: 2019 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Prognosis / Retroperitoneal Fibrosis / Autoimmune Diseases / Strikes, Employee / Ureter / Immunoglobulins / Incidence / Prospective Studies / Retrospective Studies / Rare Diseases Type of study: Incidence study / Observational study / Prognostic study / Risk factors Limits: Humans / Male Country/Region as subject: Asia Language: English Journal: Kidney Research and Clinical Practice Year: 2019 Type: Article