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ENT · Head and neck tumours: preoperative embolisation of angiofibroma
Sample itemA 15-year-old boy with a juvenile nasopharyngeal angiofibroma is scheduled for endoscopic excision. Which preoperative measure reduces intraoperative blood loss?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Angiographic embolisation of the feeding vessels
Juvenile angiofibroma is a highly vascular tumour supplied mainly by the internal maxillary artery. Embolising the feeders 24 to 48 hours before surgery significantly lowers blood loss. Biopsy is avoided because of the risk of severe haemorrhage and the diagnosis is made on imaging.
Option by option
A. Incisional biopsy to confirm the diagnosis
Biopsy risks torrential haemorrhage and is not needed when imaging is characteristic.
B. Angiographic embolisation of the feeding vessels (correct)
Correct. Embolisation of the feeding vessels shortly before surgery reduces bleeding.
C. Two weeks of systemic corticosteroids
Corticosteroids do not shrink this tumour or reduce its vascularity.
D. Intravenous bevacizumab infusion
Bevacizumab is not a standard preoperative measure for angiofibroma.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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