Résumé
@#Introduction: Epilepsy is the common condition encountered in both adults and pediatric population. It occurs as a result of various spectrum of etiology ranging from infections to tumors. EEG and Neurosonogram can characterize the type of epilepsy; however, imaging is the only tool to identify the lesion, its location, and extent and resection possibility. CT was the only modality before the era of MRI. However, CT was only used to identify the lesion with hemorrhage and calcification. It is having the disadvantage of having poor spatial resolution and using radiation. The era of MRI has changed the imaging due to its higher spatial resolution, gray white matter differentiation, status of myelination and non-utilization of radiation. Purpose: The aim of study was to detect and characterize various lesions causing epilepsy in pediatric age group (0-12 years) and also to detect frequency with which they occurred using MRI. Methods: The study was performed on 50 children under the age of 12 years over a period of 1 year who presented with epilepsy. Patients with trauma and febrile seizure disorders were excluded. Conventional and contrast MRI was performed in all cases and lesions were characterized in location, signal intensity, and other features. Results: The mean age group of the study population was 1-5 years. Generalized seizures constituted the major seizure group. Our study shows infection as the most common etiology followed by mesial temporal sclerosis and Focal cortical dysplasia. It was followed by neoplastic etiology, phacomatosis and demyelinating diseases. Conclusion: MRI is the imaging modality of choice in the evaluation of pediatric patients presenting with epilepsy. Proper MRI seizure protocol helps to establish the correct diagnosis, plan the management according to diagnosis as well as helps in prognosis.
Résumé
The desmoplastic infantile ganglioglioma is very rare cerebral tumor. It has been known to be characterized by its voluminious size, intense desmoplasia and the frequent presence of astrocytic and ganglioglionic differentiation. Also, It is usually presented in infantile period and predilected in the frontal and parietal lobes. We treated a huge desmoplastic infantile ganglioglioma(8?7?6cm) on the right frontotemporo-parietal area with only gross total resection. It includes solid mass & several cysts and shows the areas of the proliferation of spindle cells exhibiting storiform pattern in dense desmoplastic stroma and the areas composed of spindle shaped glial component.