Large benign pineal cysts: two case reports with review.
While small benign cysts of the pineal gland are a common incidental autopsy finding in the adolescent and adult years, lesions larger than 0.5 cm in diameter are rare. Cysts 2 cm or larger may cause neurologic symptoms and signs from aqueductal obstruction and tectal compression. Large pineal cysts have an almost 3 to 1 predominance in women, and the high incidence of recent or old bleed into the cyst suggests that it may be a factor in its expansion. In most instances, sequential MRI monitoring of even large, asymptomatic benign pineal cysts remains unchanged, and only rarely is surgical or stereotactic intervention necessary.
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D000328:Adult; D001921:Brain / Q000473:pathology; D001927:Brain Diseases / Q000175:diagnosis; D003560:Cysts / Q000175:diagnosis; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D010870:Pineal Gland