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3 Head and Neck

nor salivary glands as well as portions of thesubmandibular gland and duct. Infectionsin these spaces are usually odontogenic orsubmandibular in origin. Neoplasms tend toarise from minor salivary glands or the man-dible (Fig. 3.1 and Fig. 3.2).

The submandibular space (SMS) is locatedinferior and lateral to the mylohyoid muscle.It contains the submandibular glands, sec-ond branchial cleft cysts, and lymph nodes.The sublingual space (SLS) is superior andmedial to the mylohyoid and contains mi-

Fig. 3.1a–d Neck compartment anatomy. PMS: pharyngeal mucosal space. PPS: parapharyngeal space. RPS: retropharyngeal space. PVS: pre- (or peri-) vertebral space. CS: carotid space. PS: parotid space. MS: masticator space. SMS: submandibular space. SLS: sublingual space.

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