A 3 cm squamous cell carcinoma of the retromolar trigone and invading the mandible and the medial pterygold muscle is at what TNM stage____________?
Correct answer: D. Stage IV
- A. Stage I
- B. Stage II
- C. Stage III
- D. Stage IV
Explanation
A retromolar trigone carcinoma invading the mandible or deep muscles such as the medial pterygoid is locally advanced T4 disease. Any T4 oral cavity carcinoma is placed in stage IV, assuming no information suggesting a different stage grouping.
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