Ectopic clival craniopharyngioma

Area of Science:

• Neuro-oncology
• Pediatric Radiology
• Pathology

Background:

• Craniopharyngiomas are rare, benign tumors with bimodal age distribution, often affecting children and older adults.
• These tumors arise along the craniopharyngeal tract, commonly in intra/suprasellar regions, potentially compressing adjacent structures and causing varied symptoms.
• Chordomas are distinct rare tumors originating from notochordal remnants, typically in the sacrum or clivus, with characteristic imaging features.

Purpose of the Study:

• To report a rare case of ectopic clival craniopharyngioma in an 11-year-old, the youngest documented.
• To highlight unique imaging findings that aid in differentiating this tumor from chordoma.
• To contribute to the understanding of rare craniopharyngioma presentations.

Main Methods:

• Case report of an 11-year-old patient with an ectopic clival craniopharyngioma.
• Diagnostic evaluation utilizing Magnetic Resonance Imaging (MRI).
• Comparison of imaging characteristics with typical craniopharyngioma and chordoma presentations.

Main Results:

• The patient presented with an ectopic clival craniopharyngioma extending from the sellar to the clival region.
• Key imaging findings included T1 hyperintensity and a downward growth pattern along the expected Rathke pouch course.
• These features were crucial in distinguishing the craniopharyngioma from a chordoma.

Conclusions:

• Ectopic clival craniopharyngiomas, though rare, can occur in pediatric patients.
• Specific MRI findings, such as T1 hyperintensity and growth pattern, are vital for accurate diagnosis and differentiation from other skull base tumors like chordoma.
• This case underscores the importance of detailed imaging analysis in diagnosing rare pediatric neoplasms.