e-CASES: TNM staging - Prostate - 7th edition - Prostate Cancer Staging

TNM staging - Prostate - 7th edition

Primary Tumor  (T) - Clinical

• TX Primary tumor cannot be assessed
• T0 No evidence of primary tumor
• T1 Clinically inapparent tumor neither palpable nor visible by imaging
  • T1a Tumor incidental histologic finding in 5% or less of tissue resected
  • T1b Tumor incidental histologic finding in more than 5% of tissue resected
  • T1c Tumor identified by needle biopsy (for example, because of elevated PSA)
• T2 Tumor confined within prostate1
  • T2a Tumor involves one-half of one lobe or less
  • T2b Tumor involves more than one-half of one lobe but not both lobes
  • T2c Tumor involves both lobes
• T3 Tumor extends through the prostate capsule2
  • T3a Extracapsular extension (unilateral or bilateral)
  • T3b Tumor invades seminal vesicle(s)
• T4 Tumor is fixed or invades adjacent structures other than seminal vesicles, such as external sphincter, rectum, bladder, levator muscles, and/or pelvic wall

Regional Lymph Nodes (N) - Clinical

• NX  Regional lymph nodes were not assessed
• N0  No regional lymph node metastasis
• N1  Metastasis in regional lymph node(s)

Distant Metastasis (M)

• M0  No distant metastasis
• M1  Distant metastasis
• M1a  Non regional lymph node(s)
• M1b  Bone(s)
• M1c  Other site(s) with or without bone disease

Sources : AJCC TNM