| The
Cancer Registry collects its information electronically using the Patient
Administration System (PAS ), the Pathology Laboratory Systems, and to
a lesser extent, the Death Certificates and Radiology Laboratory
Systems. Approximately 40,000 notifications are recorded annually.
The data are checked electronically, for errors such as wrong site/morphology
combinations and wrong sex/site combinations, using programmes from the
International Association for Research on Cancer (IARC) and Surveillance,
Epidemiology and End Results (SEER) programme in the USA. Cases are
then matched to identify duplicates or new cases. In the majority
of cases, each case received from the PAS system will have a pathology
or cytology report confirming the diagnosis. However some cancer patients
e.g. some lung cancer patients, may not have a microscopically verified
tumour as material for a biopsy may be difficult to obtain. The case notes
for these ‘PAS only’ cases are examined by trained Registry staff so that
exact date and method of diagnosis can be assigned to the patient.
Additional information is also sought from GP records of cases notified
to the Registry solely from death registrations. |