retromolar trigone
Pronunciation: REH-troh-moh-lar TRY-gohn
Triangular area of tissue behind the last mandibular molar, a common site for oral cavity cancers.
Full Definition
The retromolar trigone is a small triangular area of mucosa located posterior to the third mandibular molar, bounded by the anterior tonsillar pillar medially and the ascending ramus of the mandible laterally. This anatomical subsite of the oral cavity is a frequent location for squamous cell carcinoma and presents unique challenges for both diagnosis and treatment. Tumors in this location often have early access to deeper tissues including the pterygoid muscles and may require extensive surgical resection. The area's proximity to critical structures makes complete excision challenging while preserving function.
Usage
Usage note: Always specify laterality (left or right) when documenting retromolar trigone lesions.
In Context
- "The ulcerative lesion of the left retromolar trigone showed clinical signs of deep invasion." — Clinical examination
- "Wide local excision of the retromolar trigone tumor included partial mandibulectomy." — Operative report