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24 terms

Staging (Larynx)

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TNM
staging system for the larynx
T1
tumor limited to one subsite of supraglottis with normal vocal cord mobility
T2
tumor invades mucosa of more than one adjacent subsite of supraglottis or glottis or region outside the supraglottis (like the base of the tongue) without fixation of the larynx
T3
tumor limited to larynx with vocal cord fixation and/or invades any of the following: postcricoid area, pre-epiglottic tissues
T4a
tumor invades through the thyroid cartilage, and/or invades tissues beyond the larynx (like the thyroid, esophagus)
T4b
tumor invades pre-vertebral space, encases carotid artery,or invades mediastinal structures
T1
tumor limited to vocal cord(s) with normal mobility
T1a
tumor limited to one vocal cord
T1b
tumor involves both vocal cords
T2
tumor extends to supraglottis and/or subglottis from the glottis with impaired vocal cord mobility
T3
tumor limited to the larynx with vocal cord fixation
T4a
tumor invades through the thyroid cartilage and/or invades tissues beyond the larynx (like the trachea)
T4b
tumor invades pre-vertebral space, encases carotid artery, or invades mediastinal structures
T1
tumor limited to the subglottis
T2
tumor extends to the vocal cord(s) with normal or impaired mobility
T3
tumor limited to larynx with vocal cord fixation
T4a
tumor invades through cricoid or thyroid cartilage and/or invades tissues beyond the larynx (like the trachea)
stage I
T1 N0 M0
stage II
T2 N0 M0
stage III
T3 N0 M0; T2 N1 M0; T3 N1 M0; T1 N1 M0
stage IVa
T4a N0 M0; T4a N1 M0; T1 N2 M0; T3 N2 M0; T4a N2 M0
supraglottis
region of the larynx that is composed of the epiglottis, and false vocal cords
glottis
region of the larynx composed of the true vocal cords
subglottis
region of the larynx extending from the lower boundary of the glottis to the lower margin of the cricoid cartilage