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Kidney tumor

Renal pelvic tumors


Reviewers: Sean Williamson, M.D. (see Reviewers page)
Revised: 1 July 2016, last major update July 2012
Copyright: (c) 2003-2016, PathologyOutlines.com, Inc.

Primary tumor (T)


TX: Primary tumor cannot be assessed
T0: No evidence of primary tumor
Ta: Papillary noninvasive carcinoma
Tis: Carcinoma in situ
T1: Tumor invades subepithelial connective tissue (lamina propria)
T2: Tumor invades the muscularis propria
T3: Renal pelvis - tumor invades beyond muscularis into peripelvic fat or the renal parenchyma
Ureter - tumor invades beyond muscularis into periureteric fat
T4: Tumor invades adjacent organs, or through the kidney into the perinephric fat

Regional lymph nodes (N)


Note: laterality does not affect the N classification

NX: Regional lymph nodes cannot be assessed
N0: No regional lymph node metastasis
N1: Metastasis in a single lymph node, 2 cm or less in greatest dimension
N2: Metastasis in a single lymph node, more than 2 cm but not more than 5 cm in greatest dimension; or multiple lymph nodes, none more than 5 cm in greatest dimension
N3: Metastasis in a lymph node, more than 5 cm in greatest dimension
__: No nodes submitted or found

Distant metastases (M)


M0 No evidence of metastases based on the surgical specimen and clinical review (in CAP protocol, is called "not applicable", but functions as M0 in anatomic staging below
M1: Distant metastasis

Anatomic stage / prognostic groups


Stage 0a: Ta N0 M0
Stage 0is: Tis N0 M0
Stage I: T1 N0 M0
Stage II: T2 N0 M0
Stage III: T3 N0 M0
Stage IV: T4 N0 M0 or any T N1-3 M0 or M1

End of Kidney tumor > Adult malignancies > Renal pelvic tumors > Staging

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