Inclusion/Exclusion Criteria

Which patients are included in the audit?

The audit includes all patients with a primary diagnoses of bowel cancer within the current report period. Included patients must be:

1) Aged 18 or older at the date of diagnosis
2) Diagnosed in the audit period (April-March)
3) Diagnosed with colorectal cancer for the first time, with one of the following ICD10 codes:

    o C18 Malignant neoplasm of colon
    o C19 Malignant neoplasm of rectosigmoid junction
    o C20 Malignant neoplasm of rectum

Information is also collected on associated recurrent cancers in the non-primary record. The original primary diagnosis must be recorded in CAP for a recurrent cancer to be submitted.

The following patients are excluded from the audit:
• Sarcomas
• B cell lymphoma
• Neuroendocrine/Carcinoid tumours
• Melanoma

Does the audit include patients with anal cancer?

No. From 1 April 2022 the audit no longer collects patients with a primary diagnoses of anal cancer (ICD10 code C21).

Do all patients require a histological diagnosis to be included?

If a patient is deemed palliative, and they are unfit for a biopsy, and the MDT consensus is that this a colorectal malignancy, the patient should be included in NBOCA.

Which procedures are included as a major resection?

• Extended right hemicolectomy
• Right hemicolectomy
• Transverse colectomy
• Left hemicolectomy
• Sigmoid colectomy
• Anterior resection
• APER
• Pelvic exenteration
• Hartmann’s procedure
• Total colectomy and ileorectal anastomosis
• Total excision of colon and rectum
• Total excision of colon and rectum + anastomosis of ileum to anus + create pouch