Published online Nov 28, 2014. doi: 10.3748/wjg.v20.i44.16782
Revised: May 10, 2014
Accepted: July 24, 2014
Published online: November 28, 2014
Core tip: IgG4-related disease has been an increasingly recognized entity affecting multiple organ systems. Lesions may mimic neoplasms, yet corticosteroid therapy is highly efficacious. In the stomach, manifestations include ulceration and pseudotumor formation. This case report describing a complication of the disease, notably an acute gastric-pericardial fistula has yet to have been described in the medical literature.