What BI-RADS assessment category indicates a lesion with a high likelihood of cancer?

Study for the Mammography Jeopardy Test. Get ready for your exam with engaging questions, detailed explanations, and comprehensive study materials.

BI-RADS categorization expresses how likely a finding is to be cancer and what the next step should be. The highest level is reserved for findings that are highly suspicious for malignancy and typically requires biopsy, because the chance of cancer is very high (generally around 95% or more). Features that push a lesion to this category include a mass with spiculated or indistinct margins, architectural distortion, or suspicious calcifications, especially if the lesion is new or shows rapid growth. Since this category signals a strong probability of cancer, biopsy is the recommended next step to obtain a definitive diagnosis and plan treatment.

Other levels reflect lower or different concerns: one indicates that imaging is incomplete and more views or studies are needed; another suggests the lesion is probably benign and usually calls for short-interval follow-up rather than immediate biopsy; and another describes a finding that is suspicious for malignancy but with a lower probability than the highest category, also leading to biopsy.