FIG 2. Superselective catheterization of a patient with advanced cancer of the gingiva of the lower mandible. A guiding catheter is introduced into the main stem of the external carotid artery (ACE) and a selective angiogram is performed (A). A coaxial microcatheter is then advanced into the facial artery (FA) via the guiding catheter. (B). Superselective angiography of the facial artery shows small tumor-feeding vessels originating from the main trunk and a submental branch of the FA (black arrows). LA indicates lingual artery; IMA, internal maxillary artery; white star, tip of the guiding catheter in the ACE stem; white triangle, tip of the microcatheter.