5. TUMOUR GRADING
This histoligic tumour grading is achieved by using criteria of :
* degree of nuclear polymorphism ie. resemble parent cell,
number of mitosis
* Good differentiated areas or poor diffrentiated area
Tumours with predominant poor differentiation have poor
prognosis. The tumours are thus graded as well, moderate or
poorly differentiated.
6. TUMOUR STAGING
Most systems are based on the criteria of:
T - Tumour size
N - Lymph node metastasis
M - Distant metastasis
This TNM staging records the clinical extent of tumour progress
of different cases in different centres and makes possible
comparison of results of treatment protocols.
For this purpose TNM staging after surgery is more reliable.
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