Pathologic T
This input is used for staging
Notes
**Note 1:** Assign 88 for in situ cases (behavior code /2). TNM does not include an in situ category for mucosal melanoma tumors. **Note 2:** Mucosal melanomas are aggressive tumors, therefore, T1 and T2 are omitted, as are Stages I and II. **Note 3:** Assign T3 for localized tumor when no other information is available or for extension involving the mucosa only of adjacent sites. **Note 4:** Assign T4a or T4b for extension involving the deeper tissues of the primary or adjacent sites.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 Physician assigns pTX, no other information available to determine T |
| p0 | pT0 | No evidence of primary tumor# | |
| p3 | pT3 | Tumor limited to the epithelium and/or submucosa (mucosal disease) | Tumor confined to mucosa of maxillary antrum (sinus) Extension involving mucosa only: Frontal sinus Sphenoid sinus Ethmoid sinus Nasal cavity Nasopharynx Localized, NOS 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: Deep soft tissue Cartilage Bone Overlying skin |
Involvement of deep tissue or mucoperiosteum of maxillary sinus plus mucosal involvement of any structure in T3 Involvement of deep tissues, mucoperiosteum, cartilage, or bony wall of any structures in T3 Involvement of deep soft tissues, cartilage, or bony wall of any structures in T3 Involvement of palatine bone Infratemporal fossa Orbital contents including eye Pterygoid plates Pterygoid fossa Skin of cheek Skin of nose Soft palate Subcutaneous tissues Stated as T4a |
| p4B | pT4b | Tumor invades any of the following: Brain Dura Skull base Lower cranial nerves (IX, X, XI, XII) Masticator space Carotid artery Prevertebral space Mediastinal structures |
Anterior cranial fossa Base of skull Clivus Cribriform plate Middle cranial fossa Orbital apex Pterygomaxillary (temporal) fossa Further contiguous extension : Carotid artery (encased) Stated as T4b |
| 88 | 88 | Not applicable | In situ case but no pTis is defined by TNM 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) |