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Prostate and pancreas involvement are linked in IgG4-related disease
Hang Liu1, Zachary S Wallace2, Liam Harvey3
1Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard, Cambridge, MA, United States; Department of Rheumatology and Immunology, First Hospital of China Medical University, China.
Objective:
Prostate involvement by IgG4-related disease (IgG4-RD) is a rarely described organ manifestation and knowledge regarding its frequency and clinical features is limited.
Methods:
From a single-center cohort, 168 male patients were examined who satisfied the 2019 ACR/EULAR classification criteria or 2012 consensus histopathologic criteria for IgG4-RD.
Results:
Prostate involvement were identified in 25 (15%) of these cases. The majority of patients with IgG4-RD involving the prostate gland (80%) were symptomatic at presentation with incomplete voiding (64%), urinary frequency (52%), and urinary hesitancy (48%) being the most common complaints. The radiologic presentation of prostate disease is most often a focal abnormality suggesting inflammation rather than a mass lesion. While most patients with IgG4-related prostate disease (89%) experienced recurrence after or during glucocorticoid tapering, patients treated with B cell targeted therapy in this series experienced clinical improvement and were tapered off of glucocorticoids. Additionally, patients with IgG4-RD involving the pancreas (p = < 0.001) were more likely to have prostate involvement than were those with other types of organ involvement.
Conclusion:
This report provides the first comprehensive clinical description of IgG4-RD involving the prostate gland and links this manifestation with pancreatic involvement.
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