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. 2022 Sep 1;14:147–160. doi: 10.2147/OARRR.S284763

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© 2022 Lorenzon et al.

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Several approaches to US-guided CNB of the parotid and submandibular glands. (A) Parotid gland, classic approach in the “safety-zone”. When possible (posterior, superficial lesions) or when no focal lesion sampling is required, this approach minimizes the risk of damaging the facial nerve. (B) Submandibular gland, posterior approach. Unlike the parotid gland, there is no risk of nerve damage when sampling submandibular glands. (C) Submandibular gland, anterior approach. Of note, when sampling submandibular glands, posterior and anterior approaches are equally safe.