Presentation
Chronic headache. Incidental finding.
Patient Data
Age: 30 years
Gender: Female
From the case:
Pineal cyst
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Well-circumscribed ovoid cystic lesion of the pineal region measuring 12 x 10 x 8 mm, eliciting a low signal on T1, high signal on T2, not attenuated on FLAIR and with no restricted diffusion. The postcontrast sequences show a thin peripheral enhancing rim with no solid component.
Case Discussion
MRI features most consistent with a pineal cyst.
Pineal cysts are common, usually small (<1 cm) asymptomatic, and typically found incidentally in young adults (20-30 years of age) with a predilection for women. When larger they can present with compression of the aqueduct with obstructive hydrocephalus.