How should I stage emergency patients who miss the MDT meeting and so missing pre-treatment staging. Do we retrospectively ask them to stage what it looked like or would it be sensible to use the pathological staging?

If there was a CT scan before the emergency resection (which there almost always is) there should be a pre-treatment radiology stage. After the resection, the final stage is the combined pathology and radiology stage: pT? pN? M? The final stage with all the available information is the most important for risk adjustment in the Audit.