Abstract

In the field of neuroimaging, the predominant anomaly observed consists of multiple ring-enhancing brain lesions. The objective of this investigation was to delineate and categorize the imaging manifestations associated with diverse ring-enhancing cerebral lesions. Material and Methods: 44 patients (Males=28; Females=16) were evaluated in this study conducted at NIMS Hospital over a period of 1 years. MRI along with MRS was performed in patients ranging from ages of 7-66 years. Results: A total 44 patients presented with various ring enhancing lesions. 28(64%) were males and 16 (36%) were females. 14(32%) were noted on the right side, 12(27%) were noted on the left side, Seizures are the most common presenting complaint in 43% of cases (table-2). 14 (32%) of them presented with a single lesion. Majority 30 (68%) of them showed RELs < 2cm. Evaluated spectroscopy was possible only 36 cases and was not performed in 6 cases because of presence of the lesion close to the bone. Choline peak was observed in 12 cases, Lipid in 10 cases, Lactate in 9 cases, reduced NAA peak in 3 cases and amino acids in 2 cases. Conclusion: The most sensitive modality which can characterize the intracranial ring enhancing lesions RELs is MRI’s. Based on characteristic imaging findings, MRI plays a pivotal role in patient management by suggesting the correct diagnosis.

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