craniopharyngioma
Pronunciation: KRAY-nee-oh-far-in-jee-OH-mah
A benign but clinically challenging brain tumor arising near the pituitary gland, commonly causing endocrine dysfunction in children.
Full Definition
Craniopharyngioma is a histologically benign but locally aggressive tumor that develops in the sellar and suprasellar regions, arising from remnants of Rathke's pouch. Despite its benign histology, it is considered one of the most challenging pediatric brain tumors due to its critical location near vital structures including the hypothalamus, pituitary gland, and optic pathways. Two histological subtypes exist: adamantinomatous (more common in children) and papillary (more common in adults). Children typically present with growth hormone deficiency, visual field defects, increased intracranial pressure, and hypothalamic dysfunction. Treatment involves a multidisciplinary approach including neurosurgery, radiation therapy, and long-term endocrine management.
Usage
Usage note: Despite benign histology, often described as malignant behavior due to location and treatment challenges.
In Context
- "The patient developed diabetes insipidus following craniopharyngioma resection." — Post-operative consultation
- "MRI revealed a cystic and solid craniopharyngioma with suprasellar extension." — Neuroimaging report