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Table 1: 
Comparison of angiographic findings and treatment parameters between patients with HHT and patients with idiopathic epistaxis
Normal AngiogramRequired Multiple Embolizations
HHT1/12 (8%)6/12 (50%)
Idiopathic7/10 (70%)1/10 (10%)
P = .0062P = 0.0743
Previous surgery for epistaxis
    HHT8/12 (67%)
    Idiopathic4/10 (40%)
P = .3913
Mean number of vessels embolized
    HHT2.75
    Idiopathic2.27
P = .1975
Bilateral ECA vessel embolization performed
    HHT15/16 (94%)
    Idiopathic7/11 (64%)
P = .1252
  • Note:—HHT indicates hereditary hemorrhagic telangiectasia; ECA, external carotid artery. P values were calculated using the Fisher exact test for categoric data and t test for continuous data.