1. Teaching NeuroImages Neurology Resident and Fellow Section © 2015 American Academy of Neurology A two month old male infant presented with macrocephaly and signs of raised intracranial tension

2. Vignette A two month old male infant presents with macrocephaly and signs of raised intracranial tension. Neurological examination revealed anterior fontanelle is full, bulging and tense with increase head circumference. Shrestha et al. © 2015 American Academy of Neurology

3. Shrestha et al. © 2015 American Academy of Neurology Imaging A E BC D

4. Interhemispheric multiloculated cyst with callosal dysgenesis in the infant Interhemispheric multiloculated cysts related with callosal dysgenesis (CD) are relatively rare lesions. According to Barkovich et al classification, our case has type 2a cyst. 1 Arachnoid cyst, neuroepithelial cyst and ependymal cysts are consider as differential diagnosis of cause. The origin and management of cyst is still controversial. Neuroendoscopic management of such kind of cyst is minimal invasive method which makes communication between the cyst, ventricular system and subarachnoid space by avoiding shunts and microsurgery. 2 Shrestha et al. © 2015 American Academy of Neurology