Ct Tumor Registry While there are multiple datasets that include information on cancer (the Death Registry, OHCA Hospital Inpatient Discharge Database, CHIME), the single most comprehensive source of information on cancer is the CT Tumor Registry.  The registry is population-based and includes all reported cancers diagnosed among CT residents from 1935 to the present, as well as follow-up, treatment and survival data. All hospitals and private laboratories in CT are required by law to report cancer cases to the registry; this includes hospital discharges, outpatient services, emergency department treatments, referral/specialty care and clinical laboratory results including benign conditions.  Approximately 21,000 cases are reported annually and the database currently includes approximately 475,000 cases.