Clinical T

This input is used for staging

Notes

**Note 1:** Assign T3 If there is fixation of hemilarynx or larynx. **Note 2:** For the following descriptions, assign the appropriate T category (T1, T2 or T3) based on the tumor size. Invasive tumor confined to one of the following subsites Laryngopharynx Postcricoid area Posterior pharyngeal wall Pyriform sinus Tumor invades more than one subsite of hypopharynx WITHOUT fixation of hemilarynx Oropharynx Larynx WITHOUT fixation Confined to hypopharynx Localized, NOS

NAACCR Item

NAACCR #940

Clinical T	Clinical T Display	Description	Registrar Notes
cX	cTX	Primary tumor cannot be assessed	Clinical classification criteria met, evaluation done: Physician unable to assess T Extension cannot be determined Tumor size (TS) unknown for T categories where TS needed to determine T Physician assigns cTX, no other information available to determine T
c0	cT0	No evidence of primary tumor
pIS	pTis	Carcinoma in situ	Intraepithelial, noninvasive Stated as Tis
c1	cT1	Tumor limited to one subsite of hypopharynx and/or 2 cm or less in greatest dimension	Stated as T1
c2	cT2	Tumor invades more than one subsite of hypopharynx or an adjacent site, OR Measures more than 2 cm but not more than 4 cm in greatest dimension, WITHOUT fixation of hemilarynx	Stated as T2
c3	cT3	Tumor more than 4 cm in greatest dimension, OR WITH fixation of hemilarynx or extension to esophagus	Fixation of hemilarynx or larynx Stated as T3
c4	cT4	Not defined by UICC*#	Note: T4 has subcategories of T4a and T4b. Assign T4 only when there is no information available to assign one of the subcategories Tumor invades bone, nerve or extrinsic deep muscles Stated as T4[NOS]
c4A	cT4a	Tumor invades any of the following: Thyroid/cricoid cartilage Hyoid bone Thyroid gland Esophagus Central compartment soft tissue	Central compartment soft tissues of neck including: Prelaryngeal strap muscles Stated as T4a
c4B	cT4b	Tumor invades: Prevertebral fascia Encases carotid artery Mediastinal structures	Carotid artery (encased) Base of tongue Floor of mouth Nasopharynx Further contiguous extension Stated as T4b
88	88	Not applicable	Primary site/histology not TNM defined Death certificate only (DCO) case
<BLANK>	BLANK	See Registrar Notes	Clinical classification criteria not met Clinical classification criteria met, evaluation done: No information about diagnostic workup Results not documented in record Clinical evaluation of primary tumor not done or unknown if done Tumor first detected on surgical resection (no clinical workup) Evidence of metastatic disease [(cM1) or (pM1)], no other workup Only Clinical Stage Group documented (no T, N, or M information available)

\* T4 [NOS] is not defined by UICC in the 7th edition. Approval has been provided by UICC to use "Tumor invades bone, nerve or extrinsic deep muscles" as T4 [NOS]. \# T4 [NOS] is not defined in AJCC 7th edition.