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Cerebral blood flow determination by video dilution technique in a patient with malignant chemodectoma
Insights
A highly vascular malignant chemodectoma was found in the jugular foramen, primarily supplied by the left ascending pharyngeal artery. Angiography and video dilution technique quantified blood flow changes after embolization.
Area of Science:
- Neuroradiology
- Vascular Surgery
- Oncology
Background:
- Jugular foramen syndrome diagnosis prompted cerebral angiography.
- Chemodectomas are rare tumors often found in the head and neck region.
Observation:
- Cerebral angiography identified a highly vascular malignant chemodectoma.
- The tumor's primary blood supply originated from the left ascending pharyngeal artery.
Findings:
- Video dilution technique quantified blood flow in extracranial carotid artery branches.
- A decrease in blood flow was observed after partial embolization of the feeding artery.
Implications:
- Demonstrates the utility of video dilution technique in assessing tumor vascularity and treatment response.
- Highlights the importance of precise arterial supply identification for embolization strategies in chemodectoma management.
Abstract:
Cerebral angiography performed on a patient with a preliminary diagnosis of jugular foramen syndrome revealed a highly vascular malignant chemodectoma supplied mainly by the left ascending pharyngeal artery. Blood flow was determined during angiography in the extracranial branches of the carotid arteries by video dilution technique. The decrease of blood flow after partial embolization of the left ascending pharyngeal artery was also quantified. The application and value of video dilution technique in blood flow determination, together with the angiographic findings are discussed.