Differentiating between various pathologies showing ring enhancement on MRI

Introduction: Ring-enhancing lesions are one of the most commonly encountered neuroimaging abnormalities visualized on MRI. The most common etiologies causing ring enhancing lesion include tuberculomas, neurocysticercosis, abscess, infarct and demyelination disorders.Mostly the ring-enhancing lesions are located at junction of the gray and white matter but in few cases they are seen in the sub-cortical area& deep brain parenchyma.Few specific features of ring enhancing lesions seen in sequences of MRI brain coupled with clinical history helps in narrowing down our diagnosis. Material and methods: 55 patients with ring enhancing lesions on MR imaging in Dhiraj hospital were considered in our study. A detailed clinical history along with general and systemic examination, especially evaluation of neurological status was done in all the patients. Results: 55 indoor patients admitted to medical ward in Dhiraj hospital of age group 16 to 70 yearswere selected for the study. Majority were in the age group of thirty to forty five years. Headache emerged as the most common complaint that the patients presented with. Out of a total of 55, 49 patients complained of headache. Vomiting was seen in 39,Seizures was seen in 21 and episodes of loss of consciousness in 11 patients.