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Correct placement of the swab and origins of the nasal bleeds in this study. The life-threatening bleeds resulted from the anterior ethmoid artery, 1 from the lateral and 1 from the medial nasal wall (blue asterisks). One bleed resulted from the sphenopalatine artery (black asterisk), and in 1 case, the bleeding site could not be identified. A, Anterior view; B, Lateral wall of nasal cavity; C, Medial wall of nasal cavity.
