Updated: 2/9/2019

Tumor Nomenclature

0%
Topic
Review Topic
0
0
N/A
N/A
Questions
2 2
0
0
0%
0%
Videos
1 1
Topic
Tumor Grade Vs. Stage
  • Grade 
    • histologic assessment of how closely a neoplasm resembles the original tissue
    • graded I-IV
      • score given on degree of differentiation and number of mitoses
    • important determinant of prognosis
      • the less a tumor resembles the original tissue the worse the prognosis
  • Stage
    • degree of size and spread of a neoplasm
    • typically has more prognostic value than grade 
      • importance in determining stage
        • metastasis (non-lymph node) > lymph node involvement > size of tumor
    • TNM staging system is commonly used to describe the stage
      • T = size of tumor
      • N = node involvement
      • M = metastases
    • determined after surgical resection of tumor
Tumor nomenclature
  • Carcinoma denotes epithelial origin
  • Sarcoma denotes mesenchymal origin
Cell type
Benign
Malignant
Epithelium Adenoma, papilloma Adenocarcinoma and papillary carcinoma
     Melanocyte Nevus Melanoma
Mesenchyme    
     Blood cells n/a Leukemia and lymphoma
     Blood vessels Hemangioma

Angiosarcoma

     Smooth muscle Leiomyoma Leiomyosarcoma
     Skeletal muscle Rhabdomyoma Rhabdomyosarcoma
     Bone Osteoma Osteosarcoma
     Fat Lipoma Liposarcoma
     >1 cell type Mature teratoma (women) Immature teratoma and mature teratoma (men)

Tumor differences
  • Benign
    • usually well-differentiated (i.e. low grade)
    • slow growing
    • well circumscribed
    • no metastasis
  • Malignant
    • may be poorly differentiated (i.e. high grade)
    • erratic growth
    • poorly circumscribed
    • may metastasize
Topic Rating

Please rate topic.

Average 4.4 of 7 Ratings

 

Questions (2)
Question locked
Sorry, this question is for
PEAK Premium Subscribers only
Upgrade to PEAK
Question locked
Sorry, this question is for
PEAK Premium Subscribers only
Upgrade to PEAK
VIDEOS (1)
Topic COMMENTS (0)
Private Note