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 GIST stomach tumors. **Note 2:** Ignore intraluminal extension to adjacent segment(s) of colon; code depth of invasion or extra-appendiceal spread as indicated. **Note 3:** Tumor size must be known to assign a T value. You may use a physician’s statement of the T category if this is the only information in the medical record. If no tumor size is available, assign TX **Note 4:** Assign the appropriate T category based on the tumor size for the following descriptions Invasive tumor in polyp, NOS Tumor confined to muscular wall Tumor invades through submucosa and muscularis mucosae to involve mucosa Implants inside stomach Invasion through muscularis propria or muscularis, NOS Extension through wall, NOS Perimuscular tissue invaded Subserosal tissue/(sub)serosal fat invaded Intraluminal extension to esophagus or duodenum Extension to adjacent (connective) tissue WITHOUT perforation of visceral peritoneum Gastric artery Ligaments Gastrocolic Gastrohepatic Gastrosplenic Omentum, NOS Greater Lesser Perigastric fat Fat, NOS Invasion of/through serosa (mesothelium), (tunica serosa) (visceral peritoneum) Including perforation of visceral peritoneum covering the gastric ligaments or the omentum WITHOUT invasion of adjacent structures Invasion of/through serosa with invasion of/through mucosa Diaphragm Duodenum via serosa Duodenum, NOS Esophagus via serosa Ileum Jejunum Liver Pancreas Small intestine, NOS Spleen Transverse colon/mesocolon (including flexures) Aorta Celiac axis Abdominal wall Adrenal gland Kidney Retroperitoneum Further contiguous extension Confined to stomach Localized, NOSNAACCR 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 | |
| p1 | pT1 | Tumor 2 cm or less in greatest dimension | Stated as T1 |
| p2 | pT2 | Tumor more than 2 cm but not more than 5 cm in greatest dimension | Stated as T2 |
| p3 | pT3 | Tumor more than 5 cm but not more than 10 cm in greatest dimension | Stated as T3 |
| p4 | pT4 | Tumor more than 10 cm in greatest dimension | Stated as T4 |
| 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) |