Symptomatic IgG4-Related Prostatitis Simultaneously Diagnosed with Aggressive Prostate Cancer

Abstract EN

IgG4-related disease is a systemic fibroinflammatory disorder that occasionally affects the prostate.

It is usually considered that patients with IgG4-related disease are at high risk of developing malignancies.

A 71-year-old man presented to our hospital with a chief complaint of urinary retention.

Prostate biopsy revealed concomitant IgG4-related prostatitis and prostate cancer.

IgG4-related prostatitis was a possible cause of urinary retention, and the aggressive nature of prostate cancer was the cause of the patient’s death 2 years after diagnosis.

This is the fourth case report of prostate cancer accompanied by IgG4-related prostatitis; however, there have been no reports of the two diseases coexisting with high clinical significance.

Our case report indicates that patients diagnosed with IgG4-related prostatitis should be carefully followed up considering the risk of prostate cancer.