Pineal cysts are typically small, benign, non-neoplastic tumors originating from glial cells within the pineal gland. Prevalence on imaging is 1-4% of intracranial masses, with peak incidence occurring in late childhood (10-14 years of age) and falling throughout adulthood1. Women are more commonly affected than men1. Should a pineal cyst enlarge to a great extent, symptomatic presentation includes hydrocephalus, gaze paresis, and hypothalamic symptoms as discussed above. Positional headaches have also been associated with pineal cysts specifically. Asymptomatic pineal cysts 1.

References

  1. Al-Holou AN, Terman SW, Kilburg C, Garton HJL, Muraszko KM, Chandler WF, Ibrahim M, Maher CO. (2011). Prevalence and natural history of pineal cysts in adults: clinical article. Journal of Neurosurgery. 115(6): 1106-1114.