This series revealed an interesting spectrum of rare solid tumors; compared with other large series, fewer lymphatic and vascular malformations were seen. Presenting symptoms, differential diagnosis, and surgical approach were differentiated according to lesion location.
sian patients frequently seek aesthetic alteration of hypertrophic masseter muscles to reduce a prominent mandibular angle. Surgical reduction is common in Asia, but botulinum toxin offers a less invasive approach. This pilot study evaluated results of aesthetic lower face narrowing in 20 Asian patients. Initially, 25 U of botulinum toxin (5 U/0.1 mL) was injected at each inferior masseter border; an additional 25 U was injected per side as needed at 1-week intervals. Seven patients (35%) required only 1 injection; 10 (50%) required 2; and 3 (15%) required 3 injections. Maximum reduction was seen at 1 to 2 months; more prominent hypertrophy yielded the most impressive results. Maintenance reinjection took place at 6 to 8 months. Up to 12 months of follow-up is reviewed herein. Two patients (10%) complained of mild fatigue after vigorous chewing and 1 developed mild transient buccal weakness. Ninteen of 20 patients were satisfied.
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