LAUSR

To the Editor: The Dandy-Walker malformation (DWM) is a rare congenital malformation involving the posterior (NeuN) and CD34 [Figure 1L], and negative for mutations in the v-raf murine sarcoma viral oncogenes homolog B1 fossa. Diagnosis of the DWM is based on a series of characteristic neuroimaging findings, which include complete or partial agenesis of the cerebellar vermis, cystic dilatation of the fourth ventricle, and enlarged posterior fossa. Several malformation syndromes and cytogenetic abnormalities have been associated with the DWM. However, the co-existence of the DWM and neoplasms is rare. There are rare reports of the co-existence of the DWM and ganglioglioma.