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A 76-year-old woman underwent percutaneous coronary intervention (PCI) to the right coronary artery for subacute myocardial infarction six months earlier. Subsequently, PCI was also performed for a residual lesion in the left anterior descending artery. On follow-up transthoracic echocardiography, performed six months later, a localized bulging of the inferior wall of the left ventricle was observed, which had markedly enlarged compared to the previous study, leading to the decision for surgical intervention. Intraoperatively, there were no significant adhesions between the aneurysm and the pericardium. A saccular aneurysm was identified in the inferior wall of the left ventricle. A thin layer of myocardial tissue was observed beneath the epicardium, suggesting the diagnosis of a pseudopseudoaneurysm. The aneurysm was incised, and patch closure was performed at the aneurysmal orifice. The postoperative course was uneventful. Left ventricular pseudo-pseudoaneurysm is an extremely rare entity. We report this case to highlight the effectiveness of surgical patch closure in the management of this condition.