Role of MRI in the Diagnosis of Dysembryoplastic Neuroepithelial Tumours (DNET): Two Case Reports
Published: 2021-05-24
Page: 343-348
Issue: 2021 - Volume 4 [Issue 2]
Zineb Abbad El Andaloussi *
Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco and Departement of Radiology, 20 August 1953 Hospital, Casablanca, Morocco.
Ali Laanait
Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco and Departement of Radiology, 20 August 1953 Hospital, Casablanca, Morocco.
Hind Arbouni
Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco and Departement of Radiology, 20 August 1953 Hospital, Casablanca, Morocco.
Aicha Merzem
Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco and Departement of Radiology, 20 August 1953 Hospital, Casablanca, Morocco.
Hasna Belgadir
Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco and Departement of Radiology, 20 August 1953 Hospital, Casablanca, Morocco.
Nadia Moussali
Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco and Departement of Radiology, 20 August 1953 Hospital, Casablanca, Morocco.
Naima Elbenna
Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco and Departement of Radiology, 20 August 1953 Hospital, Casablanca, Morocco.
*Author to whom correspondence should be addressed.
Abstract
Aims: Show the value of MRI in the diagnosis of DNET.
Presentation of Case: We report two cases of DNET, in two patients aged 17 and 14 years, with epilepsy resistant to medical treatment, with no neurological deficit on clinical examination. On MRI, the first case shows a temporal cortical lesion and the second a parietal lesion, with no mass effect or peri lesional edema.
Discussion and Conclusion: Dysembryoplastic neuroepithelial tumors (DNET) are benign brain tumors clinically revealed by partial seizures occurring in young patients under 20 years of age, with normal neurological examination. Imaging contributes to the diagnosis, it is a cortical sus-tentorial lesion, without mass effect or peri lesional edema. The temporal location is the most frequent, followed by the frontal location more rarely parietal and occipital. It is a generally stable tumor. Surgery is the only treatment for DNET, it allows epilepsy to be controlled in 85%, but confirmation remains histological.
Keywords: Epilepsy, MRI, DNET