Pathologic T

This input is used for staging

Notes

**Note 1:** The intrinsic muscles of tongue are four paired muscles within the tongue which control its shape. The extrinsic muscles originate from structures outside the tongue and control its positioning. **Note 2:** Tumor size must be known to assign a value of T1, T2 or T3. You may use a physician’s statement of the T category if this is the only information in the medical record. * If the tumor appears to be in the T1, T2 or T3 categories, but no size or category is specified, assign TX **Note 3:** Assign the appropriate T category (T1-T3) based on the tumor size for the following descriptions Invasive tumor on one side confined to posterior one-third of tongue Lamina propria Submucosa Anterior two-thirds of tongue for base of tongue Base of tongue for lingual tonsil Base of tongue tumor crosses midline Floor of mouth Glossoepiglottic fold Glossopharyngeal fold Lateral pharyngeal wall Lingual tonsil for base of tongue Lower gingiva Midline tumor Musculature, intrinsic or NOS Pharyngoepiglottic fold Soft palate, inferior surface or NOS including uvula Sublingual gland Tonsillar pillars and fossae Tumor of lingual tonsil on both sides Tonsils Vallecula Confined to base of tongue Localized, NOS

NAACCR Item

NAACCR #880
Pathologic T Pathologic T Display Description Registrar Notes
pX pTX Primary tumor cannot be assessed Pathologic classification criteria met, evaluation done:
Physician unable to assess T
Surgical resection of primary tumor, extension not stated
Tumor size (TS) unknown for T categories where TS needed to determine T
Physician assigns pTX, no other information available to determine T
p0 pT0 No evidence of primary tumor
pIS pTis Carcinoma in situ Intraepithelial, noninvasive

Stated as Tis
p1 pT1 Tumor 2 cm or less in greatest dimension Stated as T1
p2 pT2 Tumor more than 2 cm but not more than 4 cm in greatest dimension Stated as T2
p3 pT3 Tumor more than 4 cm in greatest dimension OR
extension to lingual surface of epiglottis
Epiglottis, lingual surface plus soft palate

Stated as T3
p4 pT4 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]
p4A pT4a Tumor invades any of the following:
Larynx
Deep/extrinsic muscle of tongue, which are:
Genioglossus
Hyoglossus
Palatoglossus
Styloglossus
Medial pterygoid
Hard palate
Mandible
Hypopharynx

Stated as T4a
p4B pT4b Tumor invades any of the following:
Lateral pterygoid muscle
Pterygoid plates
Lateral nasopharynx
Skull base
Encases carotid artery
Skin

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 Pathologic classification criteria not met
Pathologic classification criteria met, evaluation done:
Results not documented in patient record
No surgical resection of known primary tumor (not T0)
Resection insufficient for site-specific pathologic assessment
No surgical resection of primary tumor and there isn’t a positive biopsy of a structure in the highest T category and highest N category
Evidence of metastatic disease (pM1), no other workup
Only Pathologic 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.