Kidney tumor
Renal pelvic tumors

Author: Sean Williamson, M.D. (see Authors page)

Revised: 6 February 2017, last major update July 2012

Copyright: (c) 2003-2017,, Inc.

PubMed Search: Staging [title] Renal pelvic tumors kidney

Table of Contents
Definition / general
Cite this page: Renal pelvic tumors - Staging. website. Accessed December 11th, 2018.
Definition / general
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 (M)
Stage 0a:TaN0M0
Stage 0is:TisN0M0
Stage I:T1N0M0
Stage II:T2N0M0
Stage III:T3N0M0
Stage IV:T4N0M0orany TN1-3M0orM1