Pathologic T
This input is used for staging
Notes
**Note 1:** High grade dysplasia and severe dysplasia of the small intestine are generally n ot reportable in cancer registries. * Assign pTis if your registry collects these tumors **Note 2:** The nonperitonealized perimuscular tissue is, for jejunum and ileum, part of the mesentery and, for duodenum in areas where serosa is lacking, part of the interface with the pancreas. **Note 3:** Code depth of invasion in preference to intraluminal spread or lateral extension to adjacent segment(s) of small intestine or cecum.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 | |
| pIS | pTis | Carcinoma in situ | Noninvasive (Adeno)carcinoma, noninvasive, in a polyp Stated as Tis |
| p1 | pT1 | Tumor invades lamina propria, muscularis mucosae or submucosa# | Note: T1 has subcategories of T1a and T1b. Assign T1 only when there is no information available to assign one of the subcategories Intraluminal spread to other segments of small intestine or cecum Localized, NOS Stated as T1 [NOS] |
| p1A | pT1a | Tumor invades lamina propria or muscularis mucosae | Invasive tumor confined: Head of polyp Stalk of polyp Mucosa, NOS Intramucosal, NOS Polyp, NOS Stated as T1a |
| p1B | pT1b | Tumor invades submucosa | Superficial invasion of submucosa Stated as T1b |
| p2 | pT2 | Tumor invades muscularis propria | Stated as T2 |
| p3 | pT3 | Tumor invades subserosa or non-peritonealized perimuscular tissue (mesentery or retroperitoneum) WITH extension 2 cm or less |
Invasion through muscularis propria or muscularis, NOS Extension through wall, NOS Subserosal tissue/(sub)serosal fat invaded Transmural, NOS Wall, NOS Adjacent connective tissue Adjacent tissue(s), NOS Nonperitonealized perimuscular tissue (mesentery, mesenteric fact, retroperitoneum): depth of invasion less than 2 cm OR not specified Fat, NOS Stated as T3 |
| p4 | pT4 | Tumor perforates visceral peritoneum or directly invades other organs or structures, including: Abdominal wall by way of serosa Mesentery or retroperitoneum more than 2 cm Other loops of small intestine For duodenum only, invasion of pancreas |
Invasion of/through serosa (mesothelium) (tunica serosa) (visceral peritoneum) All small intestine sites: Nonperitonealized perimuscular tissue (mesentery, mesenteric fact, retroperitoneum): depth of invasion greater than 2 cm Other segments of the small intestine via serosa Duodenum primary only (C170): Ampulla of Vater Blood vessel(s), major: Aorta Gastroduodenal artery Portal vein Renal vein Superior mesenteric artery or vein Vena cava Diaphragm Extrahepatic bile duct(s) Gallbladder Hepatic flexure Kidney (right or NOS) Liver (quadrate lobe, right lobe or NOS) Omentum Pancreas Pancreatic duct Stomach Transverse colon Ureter, right Jejunum or ileum primary only (C171, C172): Bladder Colon, including appendix Fallopian tube(s) Ovary(ies) Uterus Further contiguous extension 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) |