Nephroblastoma staging after upfront nephrectomy (COG convention).
The Wilms Tumour — Toronto / COG Stage is a oncology scoring tool used in paediatric practice. Nephroblastoma staging after upfront nephrectomy (COG convention). It scores 1 criteria and interprets the total across 5 bands, so the number always arrives with the severity it implies rather than on its own. In PediAid each criterion is shown as a labelled option with the weight it carries, so the total can be checked rather than taken on trust.
1. They are Surgical and pathological extent.
The total is interpreted as: 1 stage or more - Stage I: stage I - excellent prognosis (>90% survival with favourable histology). Nephrectomy plus short chemotherapy; 2 stage or more - Stage II: stage II - completely resected beyond the kidney. Chemotherapy without flank radiotherapy in favourable histology; 3 stage or more - Stage III: stage III - residual abdominal disease. Chemotherapy PLUS flank/abdominal radiotherapy; 4 stage or more - Stage IV: stage IV - distant metastases. Intensified chemotherapy plus radiotherapy to metastatic sites as indicated; 5 stage or more - Stage V: stage V - bilateral disease. Nephron-sparing strategy with pre-operative chemotherapy; each kidney is also staged individually.
No. It is a structured way to record and communicate severity. A clinician concerned about a child should act on that concern regardless of the total.
Histology (favourable vs anaplastic) is as important as stage for risk assignment.
Yes. Score definitions are bundled with the PediAid app, so the score computes without a connection.