High 18F-FDG Uptake in a Papillary Craniopharyngioma of the Third Ventricle

Craniopharyngioma is a benign tumor classified as grade 1 by the World Health Organization Classification of Tumors of the Central Nervous System. We present a rare case of a high-F-18-FDG-avidity papillary craniopharyngioma of the third ventricle. A 65-year-old man underwent CT and MRI examinations for gait disturbance, lower-limb weakness, and urinary incontinence, and an oval solid tumor that extended from the suprasellar region to the third ventricle was identified. F-18-FDG PET/CT showed high accumulation (SUVmax, 22.3) in the tumor. A transventricular endoscopic tumor biopsy led to the diagnosis of papillary craniopharyngioma.

Automated summary

This is a rare case report of a high-F-18-FDG-avidity papillary craniopharyngioma of the third ventricle. The patient underwent CT and MRI examinations and a solid tumor extending from the suprasellar region to the third ventricle was identified. F-18-FDG PET/CT showed high accumulation of fluorodeoxyglucose in the tumor. Diagnosis of papillary craniopharyngioma was confirmed through a transventricular endoscopic tumor biopsy.