We Report the Case of a 73-Year- Old Female Patient With Vomiting, Aspiration Pneumonia and Constitutional Symptoms. The Imaging Tests Showed Total Gastric Herniation in the Pericardial Sac through a Pericardio-Peritoneal Window Previously Created. The Case Was Solved With Surgery. The Therapeutic Options for Persistent Pericardial Effusion Are Considered. Intrapericardial Gastric Hernia As a Complication, Its Clinical Presentation, Intraoperative Findings, Complementary Tests and Treatment Are Discussed. Rev Argent Cir 2021, 112 (2), 193-196. https://doi.org/10.25132/raac.v112.n2.1438.es.