Colloid CystsColloidsThird VentricleCystsCerebral VentriculographyNeuroendoscopyCerebral Ventricle NeoplasmsTechnetium Tc 99m Sulfur ColloidMamillary BodiesBrain DiseasesHydrocephalusFornix, BrainCyst FluidCerebral VentriclesOvarian CystsNeurosurgical ProceduresEpidermal CystTechnetium CompoundsFatal OutcomeMediastinal CystTomography, X-Ray ComputedSynovial CystBone CystsPlasma SubstitutesGold Colloid, RadioactiveHydroxyethyl Starch DerivativesBronchogenic CystDermoid Cyst