masticator space
Pronunciation: MAS-ti-kay-tor space
Anatomical compartment containing muscles of mastication, frequently involved in head and neck cancer spread.
Full Definition
The masticator space is a fascial compartment in the deep face that contains the muscles of mastication including the masseter, temporalis, and pterygoid muscles, along with the mandibular division of the trigeminal nerve. In head and neck oncology, involvement of the masticator space by tumor indicates advanced disease and typically requires extensive surgical resection including possible mandibulectomy. Tumors may access this space directly from oral cavity primaries or through perineural spread along the trigeminal nerve. Imaging assessment of masticator space involvement is crucial for treatment planning.
Usage
Usage note: Document specific muscles involved when masticator space invasion is present.
In Context
- "MRI demonstrated tumor extension into the masticator space requiring composite resection." — Radiology interpretation
- "The patient developed trismus secondary to masticator space involvement by the oral cancer." — Clinical documentation