Dysembroplastic neuroectodermal tumours (DNET's): bilateral
16 year old female patient presented with recurrent seizures.
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Two right frontal and left temporal cortical lesions are seen measuring about 2 x 1.5 x 1.2 cm and 2.2 x 1.6 x 1.5 cm at their maximal axial and craniocaudal dimensions respectively. The lesions show high signal 'bubbly appearance' on T2 WIs, low signal on T1 WIs. The lesions exert minimal mass effect on the nearby cortical sulci, and on the left there is also scallop the inner table of of the skull vault.
Cortical with hardly any surrounding vasogenic oedema and bubbly appearance on T2 WIs are imaging findings suggestive of DNET.
This case illustrates bilateral cortical lesions that favour DNETs (presumptive diagnosis). Multifocality of DNET is rare and has already been described in medical literature.