According to AJCC 8th edition staging, a T2N0M0 squamous cell carcinoma of the glottic larynx is best characterized by which of the following?
- A Tumor involves only one vocal cord with normal mobility
- B Tumor extends to the supraglottis or subglottis with impaired cord mobility ✓
- C Tumor extends to the subglottis with impaired vocal cord mobility
- D Tumor confined to the supraglottis with fixation
Correct answer: B. Tumor extends to the supraglottis or subglottis with impaired cord mobility
Explanation
In AJCC 8th edition glottic SCC staging, T2 is defined as tumor extending to the supraglottis and/or subglottis, or tumor with impaired vocal cord mobility. T1a is tumor limited to one vocal cord with normal mobility; T1b involves both cords with normal mobility. T3 involves vocal cord fixation. Understanding the T2 extension criterion is clinically important for treatment planning (partial laryngectomy vs total laryngectomy decisions).
Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.
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Written and medically reviewed by the StethoPrep medical team.