Patients with third-ventricular<unk> s become symptomatic when the tumor enlarges rapidly, causing cerebrospinal fluid (CSF) obstruction, ventriculomegaly, and increased intracranial pressure. Some<unk> s enlarge more gradually, however, allowing the patient to accommodate the enlarging mass without disruption of CSF flow, and the patient remains asymptomatic. In these cases, if the<unk>  stops growing, the patient can maintain a steady state between CSF production and absorption and may not require neurosurgical intervention.
Colloid cyst
Tarlov cyst
Dentigerous cyst
Nuchal fibroma
Odontogenic cyst
Tornwaldt cyst
Paradental cyst
Choristoma