Related Experiment Videos
Malignant melanoma arising from the sphenoidal sinus--case report
K Asano1, E Sobata, K Yamazaki
1Department of Neurosurgery, Hirosaki University School of Medicine, Aomori.
Neurologia Medico-Chirurgica
|July 13, 2000
Summary
Extremely rare malignant melanomas can originate in the sella turcica or sphenoidal sinus. Clinical presentation and symptoms can help differentiate the origin of these skull base tumors.
Area of Science:
- Neuro-oncology
- Skull Base Surgery
- Endocrinology
Background:
- Malignant melanomas originating in the sella turcica or sphenoidal sinus are exceptionally rare.
- Distinguishing between these origins preoperatively using neuroradiology is challenging.
- These tumors can invade the skull base, cavernous sinus, and surrounding structures.
Observation:
- An 83-year-old female presented with headache, nasal obstruction, epistaxis, and visual field defects.
- Initial diagnosis considered pituitary adenoma, metastatic tumor, or malignant paranasal tumor.
- Histological examination confirmed malignant melanoma.
Findings:
- The tumor exhibited rapid postoperative progression, leading to cranial nerve palsies and hypopituitarism.
- The patient died within six months of diagnosis.
- Sphenoidal sinus tumors typically present with nasal symptoms before causing cranial nerve deficits due to cavernous sinus invasion.
Implications:
- The anatomical relationship between the sphenoidal sinus, nasal cavity, and cavernous sinus influences the clinical presentation.
- Observing the clinical course and symptom progression aids in differentiating between sella turcica and sphenoidal sinus origins.
- Early recognition and accurate diagnosis are crucial for managing these rare and aggressive tumors.