Botulinum toxin A injection into the right submandibular gland under ultrasound guidance. Positioning of the ultrasound probe in the submandibular region (left) and ultrasound image of the Botox injection with the black arrows highlighting the tract of the needle as it enters the submandibular gland (right).

Botulinum toxin A injection into the right submandibular gland under ultrasound guidance. Positioning of the ultrasound probe in the submandibular region (left) and ultrasound image of the Botox injection with the black arrows highlighting the tract of the needle as it enters the submandibular gland (right).

Botulinum toxin A injection into the right submandibular gland under ultrasound guidance. Positioning of the ultrasound probe in the submandibular region (left) and ultrasound image of the Botox injection with the black arrows highlighting the tract of the needle as it enters the submandibular gland (right).

ENTtoday - https://www.enttoday.org/article/does-intraglandular-injection-of-botulinum-toxin-improve-pediatric-sialorrhea/ent_1018_pg10a/