Which class of case indicates that all first course treatment was done at the reporting facility?

The classification of cases within oncology is crucial for ensuring accurate reporting and treatment tracking. Class of case 12 typically indicates that all first course treatment for a cancer patient was conducted at the reporting facility, providing clarity and consistency in data collection. This classification ensures that the treatment received by the patient is fully documented and that the reporting facility has complete information about the patient's initial management of the disease.

In contrast, other classifications may denote scenarios where treatments were initiated at different facilities or represent different stages of care. This distinction is essential for accurately understanding treatment patterns, evaluating facility performance, and ultimately improving patient care. Therefore, identifying cases where all first course treatment occurred at a single reporting facility is critical for maintaining a reliable cancer registry.