5 tier ACR system

The 5-tier ACR system was a previously used system for classification of radiologic breast findings, proposed by the American College of Radiology (ACR). It is no longer in widespread use, having been gradually superseded by the 6-tier BI-RADS classification system first published in 1992. Interestingly, despite its name, it was actually a 6-tier system!

• 5: malignant
• 4: probably malignant: biopsy should be considered
• 3: probably benign: initial short term follow-up recommended 
• 2: benign
• 1: normal
• 0: need additional views

See also

• Nottingham classification
• BI-RADS

Siehe auch:

• Breast imaging-reporting and data system (BI-RADS)
• Nottingham classification system

und weiter:

• breast curriculum
• nottingham classification
• ACR 1 breast
• BIRADS-Klassifikation