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Primary treatment of early fistula of parotid duct with botulinum toxin type A injection* * Work performed at the Dermatology Department, Hospital do Servidor Público Municipal de São Paulo (HSPM), São Paulo, SP, Brazil.

Abstract:

Salivary duct injury can be idiopathic, iatrogenic, or post-trauma and may result in sialocele or fistula. Most injuries regress spontaneously and botulinum toxin A is one of several therapeutic possibilities. We report a case of iatrogenic injury to the parotid duct after Mohs' micographic surgery for a squamous cell carcinoma excision in the left jaw region, treated by injection of botulinum toxin type A. Although the fistula by duct injury can be self-limiting, botulinum toxin injection by promoting the inactivity of the salivary gland allows rapid healing of the fistula.

Keywords:
Botulinum toxins, type A; Mohs' surgery; Parotid region; Salivary gland fistula

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