the distance between bilateral nasal vestibular fornix longer than the distance between bilateral nostrils, so that nasal columella and nasal septum was keyhole-shaped;
两侧鼻前庭穹窿间距较两侧鼻孔最内侧点间距小,使鼻小柱及鼻中隔呈锁孔状;
objective to introduce the clinical application of long slender tubed flap constructed with 「bridge」 technique in the repair of nasal columella defect.