Ring-Enhancing Cystic Lesions: Infectious Mimicry of High-Grade Brain Tumors – A Neuroradiological Perspective

Ring-enhancing cystic brain lesions are often associated with infectious diseases such as neurocysticercosis (NCC) or fungal infections. However, in some cases, these lesions mimic high-grade neoplasms such as glioblastoma (GBM) or metastatic tumors. This article presents two cases in which patients were initially diagnosed with infectious brain lesions based on imaging findings, but histopathological analysis confirmed malignant tumors. Through a detailed discussion of advanced imaging techniques and diagnostic pitfalls, this study emphasizes the critical role of histopathological confirmation in differentiating infectious from neoplastic brain lesions.