The Case of the Disappearing Colloid Cyst

BACKGROUNDThe natural history of colloid cysts is imperfectly understood, and controversies remain in defining broad management strategies for incidental colloid cysts. The gradual asymptomatic regression of a colloid cyst has not been reported. CASE DESCRIPTIONWe present a unique case demonstrating the clinically silent, gradual regression of a colloid cyst over many years. CONCLUSIONSGradual regression of a colloid cyst is possible. The philosophical and practical implications of this case on the neurosurgeon's approach to managing patients with colloid cysts are discussed.