Hydrocephalus in children - A rare case of pineal cavernoma and literature review.

Background: Cavernous malformations prevalence ranges from 0.4 to 0.6% and accounts for 5-15% of all central nervous system vascular malformations.

An uncommon intramedullary tumor: Primary medullary cone melanoma.

Background: Melanoma is the third most common primary tumor to metastasize to the central nervous system (CNS). However, primary CNS melanoma is very rare, and primary intramedullary melanoma is even less frequently encountered, with only 27 cases published in the literature. There are no pathognomonic imaging characteristics, therefore, the diagnosis must be confirmed immunohistologically and the preferred treatment is the gross total resection.