Clinical T
This input is used for staging
Notes
**Note 1:** TNM defines Tis as carcinoma in situ/dysplasia (tumor size less than 0.5 mm), confined to mucosa. Neuroendocrine tumors (NET) stated to be in situ, noninvasive, or confined to mucosa are classified as Tis. * "Dysplasia" alone is generally not reportable in cancer registries but, if a registry does collect it, assign Tis **Note 2:** Intraluminal or intramural extension to esophagus and duodenum is classified by the depth of greatest invasion. * For extension to esophagus or duodenum via serosa, assign T4 **Note 3:** Tumor size must be known to assign a value of T1 or T2. 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 or T2 categories, but no size or category is specified, assign TX **Note 4:** Assign the appropriate T category (T1, T2) based on the tumor size for the following descriptions Invasion into Lamina propria, including lamina propria in a polyp Muscularis mucosae, including muscularis mucosae in a polyp Submucosa (superficial invasion), including submucosa in a polyp Implants inside stomach Confined to stomach Localized, NOSNAACCR Item
NAACCR #940| Clinical T | Clinical T Display | Description | Registrar Notes |
|---|---|---|---|
| cX | cTX | Primary tumor cannot be assessed | Clinical classification criteria met, evaluation done: Physician unable to assess T Extension cannot be determined Tumor size (TS) unknown for T categories where TS needed to determine T Physician assigns cTX, no other information available to determine T |
| c0 | cT0 | No evidence of primary tumor | |
| pIS | pTis | Carcinoma in situ/dysplasia (tumor less than 0.5 mm, confined to mucosa) | Intraepithelial, noninvasive Tumor size less than 0.5 millimeters (mm) Tumor confined to mucosa, NOS including intramucosal, NOS Stated as Tis |
| c1 | cT1 | Tumor confined to mucosa and 0.5 mm or more but not greater than 1 cm in size; OR Invades submucosa and is no greater than 1 cm in greatest dimension |
Stated as T1 |
| c2 | cT2 | Tumor invades muscularis propria OR Is more than 1 cm in greatest dimension |
Stated as T2 |
| c3 | cT3 | Tumor invades subserosa | Invasion through muscularis propria or muscularis, NOS Extension through wall, NOS Perimuscular tissue invaded Subserosa/(sub)serosal fat penetrated Extension to adjacent (connective) tissue WITHOUT perforation of visceral peritoneum: Gastric artery Ligaments: Gastrocolic Gastrohepatic Gastrosplenic Omentum Perigastric fat Stated as T3 |
| c4 | cT4 | Tumor perforates visceral peritoneum (serosa) or other organs or adjacent structures | 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 Abdominal wall Adrenal gland Aorta Celiac axis Diaphragm Duodenum via serosa or NOS Esophagus via serosa Ileum Jejunum Kidney Liver Pancreas Retroperitoneum Small intestine, NOS Spleen Transverse colon/mesocolon (including flexures) Further contiguous extension Stated as T4 |
| 88 | 88 | Not applicable | Death certificate only (DCO) case |
| <BLANK> | BLANK | See Registrar Notes | Clinical classification criteria not met Clinical classification criteria met, evaluation done: No information about diagnostic workup Results not documented in record Clinical evaluation of primary tumor not done or unknown if done Tumor first detected on surgical resection (no clinical workup) Evidence of metastatic disease [(cM1) or (pM1)], no other workup Only Clinical Stage Group documented (no T, N, or M information available) |