Clinical 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 T. You may use a physician’s statement of the T category if this is the only information in the medical record. * If no size or category is specified, 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, NOS

NAACCR 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
c1	cT1	Tumor 2 cm or less in greatest dimension	Stated as T1
c2	cT2	Tumor more than 2 cm but not more than 5 cm in greatest dimension	Stated as T2
c3	cT3	Tumor more than 5 cm but not more than 10 cm in greatest dimension	Stated as T3
c4	cT4	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	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)