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[Neurinoma with intrasellar extension: a case report]
No Shinkei Geka. Neurological Surgery
|January 1, 1985
Summary
A rare parasellar neurinoma, initially suspected as a pituitary adenoma, was diagnosed in a patient with retro-orbital pain. This case suggests a potential origin from the oculomotor nerve, distinct from typical trigeminal neurinomas.
Area of Science:
- Neuro-oncology
- Neurosurgery
- Ophthalmology
Background:
- Parasellar neurinomas are uncommon tumors, often presenting diagnostic challenges regarding their precise origin.
- Distinguishing between various cranial nerve neurinomas in the parasellar region is crucial for effective treatment planning.
Observation:
- A 64-year-old female presented with left retro-orbital pain, ptosis, and diplopia, later developing anisocoria.
- Imaging revealed a parasellar enhancing mass with intrasellar extension, and angiography showed displacement of the internal carotid artery.
- Surgical exploration identified a solid tumor adjacent to the pituitary gland, histologically diagnosed as a neurinoma.
Findings:
- The tumor's presentation and imaging characteristics differed from typical trigeminal neurinomas.
- Histopathological analysis confirmed a neurinoma, with clinical and radiological findings suggesting an origin from the oculomotor nerve.
Implications:
- This case expands the understanding of rare parasellar neurinomas and their potential origins.
- Accurate diagnosis of parasellar neurinomas is essential, as their origin influences surgical approach and prognosis.
- Further review of similar rare cranial nerve neurinomas may refine diagnostic criteria and treatment strategies.