Pari Gul, Bushra Rehan, Saleha Anwar, Ayub Mansoor.
Asymtomatic arachnoid cyst presenting with subdural hygroma after cyst rupture: a rare complication.
Pak J Neurological Sci Jan ;7(4):12-3.

Arachnoid cysts are well-recognized, benign intracranial lesions, occurring most commonly in the middle cranial fossa. Although most arachnoid cysts are asymptomatic, they may be associated with a more complicated course, causing mass effect or hydrocephalus. Spontaneous and post-traumatic intracystic and subdural haemorrhage has also been reported. We describe a case of a very rare complication of symptomatic rupture of a middle cranial fossa cyst into the subdural compartment.

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