期刊
TURKISH JOURNAL OF PATHOLOGY
卷 38, 期 2, 页码 122-132出版社
FEDERATION TURKISH PATHOLOGY SOC
DOI: 10.5146/tjpath.2021.01561
关键词
Granuloma; Renal biopsy; Pathology; Renal
类别
This study investigated the distribution of causes and renal survival of granulomatous interstitial nephritis in a tertiary care hospital in Western Turkey. The majority of cases were caused by vasculitis, and renal outcomes were unfavorable despite treatment. The study suggests the need for multicenter studies to determine the etiology and outcome of granulomatous interstitial nephritis at different geographic locations.
Objective: Granulomatous interstitial nephritis is a rare finding, and etiology differs by geography. We aimed to investigate the distribution of causes of granuloma/granulomata in the kidney and renal survival of these patients in a tertiary care hospital in Western Turkey. Material and Method: Medical records of adults who underwent a kidney biopsy procedure in our institution between January 2000 and June 2019 were reviewed. Pathology reports were searched for biopsies where a granuloma was identified. Results: Nineteen of 1121 (1.7%) kidney biopsies included granuloma, 17 in native kidneys, and 2 in transplants. The majority of indications for native kidney biopsy was a rise in serum creatinine. Etiologies of granuloma included the following: pauci-immune vasculitis (n=11, 64.7%), tuberculosis (n=2, 11.8%), drug-induced (n=2, 11.8%), tubulointerstitial nephritis/uveitis (TINU) syndrome (n=1, 5.9%), and systemic-lupus erythematosus (n=1, 5.9%). Despite treatment, 6 of 11 (54.5%) patients with vasculitis developed end-stage kidney disease (ESKD) during the median follow-up of 16 months. Both of the patients with tuberculosis, and the patient with TINU syndrome developed ESKD months after the kidney biopsy, despite appropriate therapies. The only case with drug-induced granuloma and both cases with allograft kidney granuloma responded well to glucocorticoids, achieving a complete renal recovery. Conclusion: The majority of our series had granuloma in the kidney secondary to vasculitis and renal outcomes appear considerably unfavorable despite treatment, probably related to the primary diagnosis. Multicenter studies are needed to better determine the etiology and outcome of each granuloma etiology at different geographic locations.
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