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Pineal cyst

Case contributed by Utkarsh Kabra
Diagnosis almost certain

Presentation

Decreased libido, MRI done for pituitary gland

Patient Data

Age: 30 years
Gender: Male
mri

Cystic lesion, measuring approx. 12 x 11 x 11mm is seen in the pineal region. It appears hyperintense on T2, FLAIR images, and slightly hyperintense on T1W images. The lesion shows thin internal septations with no obvious solid component in the present non contrast scan. The lesion is mildly compressing superior aspects of the tectal plate, elevating, mildly splaying bilateral internal cerebral veins, and abutting splenium of the corpus callosum. No obvious hydrocephalus is seen in the present scan. 

Pituitary gland measures 10 x 11 x 6mm (AP x TD x HT). Normal size and signal intensity of anterior and posterior pituitary is seen with no obvious sella / suprasellar mass in present non contrast scan.

 

Case Discussion

Findings are suggestive of pineal cyst. Pineal cysts may cause hypopituitarism which can possibly explain patient's symptoms. It is important to note that there is no hydrocephalus in present scan and patient did not have any symptoms of Parinaud syndrome.

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