Bilateral thalamic infarction with posterior cerebral artery variant (the arcade artery): A case report

The elderly experiencing a sudden drop in consciousness should be evaluated for thalamic lesions, primarily cerebral infarction in the posterior circulation. Anatomical artery variations may be helpful in attributing multiple and bilateral lesions to a single source of embolism. Digital subtraction angiography and transesophageal echocardiography can help to clarify the etiological categorization and formulate a secondary prevention strategy for cerebral infarction. Paradoxical embolism is a diagnostic dilemma in the elderly population, and treatment principles must be integrated with guidelines, the prospectively validated patent foramen ovale-associated stroke causal likelihood risk stratification system, interdisciplinary collaboration and customized analysis.