multifocal disease
Cancer occurring in multiple distinct locations within the same organ or anatomic region.
Full Definition
Multifocal disease describes cancer that arises in multiple separate locations within the same organ or anatomic region, representing either multiple primary tumors or local spread from a dominant lesion. In oncologic radiology, distinguishing multifocal disease from metastatic disease is crucial for staging and treatment planning. Multifocal tumors typically occur in organs prone to field cancerization such as the breast, lung, liver, or bladder. Advanced imaging techniques help characterize the number, size, and distribution of lesions, which directly impacts surgical planning and prognosis. The distinction between multifocal, multicentric, and metastatic disease requires careful imaging analysis and often molecular testing for definitive classification.
Usage
Usage note: Distinguish from multicentric (different regions) and metastatic (distant spread) disease.
In Context
- "MRI revealed multifocal disease in the right breast with three distinct enhancing masses." — Breast imaging report
- "The patient's multifocal hepatocellular carcinoma required modified surgical approach." — Liver imaging interpretation