Spontaneous resolution of a suprasellar arachnoid cyst

Arachnoid cyst is a benign fluid collection, formed by arachnoid bands. It is a rare congenital abnormality, representing approximately 1% of all intracranial expanding lesions. Generally, the arachnoid cysts (CAr) are located in the middle cranial fossa and only 10% occur in the suprasellar region. The spontaneous resolution of CAr is indeed a rare and poorly described evolution reported in the literature. We report a gestational diagnosed suprasellar cyst with spontaneous resolution at the 24th month old.