Pathologic T
This input is used for staging
Notes
**Note 1:** Pleural effusion does not affect the coding Clinical and Pathologic T, but is coded in **Site-Specific Factor 1**. **Note 2:** T3 describes locally advanced, but potentially resectable tumor. **Note 3:** T4 describes locally advanced, technically unresectable tumor.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 | |
| p1 | pT1 | Tumor involves ipsilateral parietal pleura WITH or WITHOUT focal involvement of visceral pleura |
Note: T1 has subcategories of T1a and T1b. Assign T1 only when there is no information available to assign one of the subcategories Invasive tumor (mesothelioma) confined to pleura, NOS Ipsilateral parietal pleura, including mediastinal or diaphragmatic pleura, involvement of visceral pleura not stated Localized, NOS Stated as T1 [NOS] |
| p1A | pT1a | Tumor involves ipsilateral parietal (mediastinal, diaphragmatic) pleura NO involvement of visceral pleura |
Stated as T1a |
| p1B | pT1b | Tumor involves ipsilateral parietal (mediastinal, diaphragmatic) pleura WITH focal involvement of the visceral pleura |
Stated as T1b |
| p2 | pT2 | Tumor involves any of the ipsilateral pleural surfaces, with at least one of the following: Confluent visceral pleura tumor (including the fissure) Invasion of diaphragmatic muscle Invasion of lung parenchyma |
Ipsilateral pleura WITH nodule(s) beneath visceral pleural surface Lung involvement, NOS Mesothelioma nodule(s) which have broken through the visceral pleural surface to the lung surface Stated as T2 |
| p3 | pT3 | Tumor involves any ipsilateral pleural surfaces, with at least one of the following: Invasion of endothoracic fascia Invasion into mediastinal fat Solitary focus of tumor invading soft tissues of the chest wall Non-transmural involvement of the pericardium |
Mediastinal tissues Stated as T3 |
| p4 | pT4 | Tumor involves any ipsilateral pleural surfaces, with at least one of the following: Diffuse or multifocal invasion of soft tissues of chest wall Any involvement of rib Invasion through diaphragm to peritoneum Invasion of any mediastinal organ(s) Direct extension to contralateral pleura Invasion into the spine Extension to internal surface of pericardium Pericardial effusion with positive cytology Invasion of myocardium Invasion of brachial plexus |
Heart muscle, myocardium Further contiguous extension: Cervical tissues Intra-abdominal organs (For contralateral lung, see distant metastasis) Stated as T4 |
| 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) |