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Joseph Junewick, MD FACR
over 10 years ago
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ARSt Case Repository

Suprasellar Teratoma

Case Detail

Anatomy: Brain-Spine
Joseph Junewick, MD FACR
Diagnostic Category: Neoplasia Benign
Created: over 11 years ago
Updated: over 11 years ago
Tags: PEDS
Modality/Study Types: MR CT
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Teenage female with headache.

Case Images


Suprasellar Teratoma

Clinical Notes

CSF cytology – small mature lymphocytes; no malignant cells.

CSF beta hCG – 0.9 IU/L (normal <1.5 IU/L).

AFP – 2.1 ng/L


MR – Mixed, predominantly hyperintense T1 mass posterior to the pituitary stalk with chemical shift artifact on T2.

CT – Sharply marginated calcium and fat containing mass.


Intracranial teratomas are rare, accounting for ~ 0.5% of primary intracranial tumors. Teratomas are more common in children and males.

Intracranial teratomas are most common in the pineal gland or peripineal region followed by the floor of the 3rd ventricle and posterior fossa. Most teratomas are benign and characterized as a well-circumscribed mass, containing calcification and fat.

Clinical presentation depends upon size and location of the tumor. Hydrocephalus is the most common presenting sign.


Fujimaki T, et al. CT and MRI Features of Intracranial Germ Cell Tumors. J Neuro-Oncol (1994); 19(3):217-226.

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