NWTS / COG system for Nephroblastoma

The staging system used for Nephroblastoma / Wilms Tumour was developed by the National Wilms Tumor Study Group (NWTS) and updated by the Children’s Oncology Group Renal Tumor Committee.

Attend the tumour stages according to NWTS/COG system:

Stage I – The tumor is only in the kidney, and was removed completely by surgery; occur in about 40% of the cases.

Stage II – The cancer grew beyond the kidney (either into nearby fatty tissue or nearby blood vessels), but was completely removed surgically without any apparent cancer left behind; occur in about 20% of the cases.

Stage III – the tumour have not been completely removed or the tumour has spread to the lymph nodes in the abdomen; occur in about 20% of the cases.

Stage IV  – the cancer has spread through the bloodstream to other organs far away from the kidneys, such as the lungs, liver, bone or to lymph nodes; occur in about 10% of the cases.

Stage V – when tumors are in both kidneys at the time of diagnosis; the treatment is based on the kidney with the more advanced stage after surgery; occur in about 5% of the cases.



Childrens Oncology Group – Neuroblastoma
Cancer Research Uk – staging-risk-group-treatment-plan

Author: Sofia Gonçalves

...dreaming about creativity :)

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