Pathologic T

This input is used for staging


**Note 1:** Assign 88 for in situ cases (behavior code /2). TNM does not include an in situ category for GIST colon 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: **All colon subsites** Confined to colon Localized, NOS Adherent to liver capsule Extension through wall, NOS Invasive tumor in polyp, NOS Invasion of/through serosa (mesothelium) (visceral peritoneum) Invasion of/through serosa with invasion of/through mucosa Invasion through muscularis propria or muscularis, NOS Non-peritonealized pericolic tissues invaded Perimuscular tissue invaded Subserosal tissue/(sub)serosal fat invaded Transmural, NOS Tumor confined to muscular wall Tumor invades through submucosa and muscularis mucosae to involve mucosa Wall, NOS **All colon subsites** Abdominal wall Adjacent tissue(s), NOS Adrenal (suprarenal) gland Bladder Connective tissue Diaphragm Fat, NOS Fistula to skin Gallbladder Mesenteric fat Mesentery Mesocolon Other segment(s) of colon via serosa Pericolic fat Retroperitoneum (excluding fat) Small intestine **Cecum (C180)** Fallopian tube Greater omentum Kidney, right Liver Ovary Ureter, right Uterus **Ascending colon (C182)** Fallopian tube Greater omentum Liver, right lobe Kidney, right Ovary Retroperitoneal fat Ureter, right Uterus **Transverse colon (C183) and flexures (C184, C185)** Bile ducts Gallbladder Gastrocolic ligament Greater omentum Kidney Liver Pancreas Spleen Stomach Ureter **Descending colon (C186)** Fallopian tube Greater omentum Kidney, left Ovary Pelvic wall Retroperitoneal fat Spleen Ureter, left Uterus **Sigmoid colon (C187)** Cul de sac (rectouterine pouch) Greater omentum Fallopian tube Ovary Pelvic wall Ureter Uterus


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)