ARRS 2022 Abstracts

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E2120. Not All False Positives are Created Equal: Multimodality Imaging Review of Non-Breast Malignancies Detected on Breast Imaging
Authors
  1. Rachel Kaplan; Department of Radiology, Medstar Georgetown University Hospital
  2. Jaclyn Powell; Department of Radiology, Medstar Georgetown University Hospital
  3. Judy Song; Department of Radiology, Medstar Georgetown University Hospital
  4. Rend Al-Khalili; Department of Radiology, Medstar Georgetown University Hospital
  5. Janice Jeon; Department of Radiology, Medstar Georgetown University Hospital
  6. Erini Makariou; Department of Radiology, Medstar Georgetown University Hospital
  7. Erin Crane; Department of Radiology, Medstar Georgetown University Hospital
Background
This educational exhibit aims to educate radiologists and breast imagers about the Mammography Quality Standards Act (MQSA) medical audit. In doing so, we will focus on malignancies detected in the breast that are classified as false positives during the medical audit.

Educational Goals / Teaching Points
Our goals include the following: educational review of the MQSA medical audit for the radiologist; review individual cases to demonstrate what malignancies constitute true positives and false positives; demonstrate utility of mammogram, MRI, and ultrasound for incidental detection of non-breast malignancies; multimodality review of non-breast findings typical to the false positive, non-breast malignancy including CT, MRI, and PET scan; and to not only recognize incidental malignancies but also provide guidance to referring clinicians by issuing appropriate management and further imaging recommendations.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
We aim to provide a case-based review of appropriate BI-RADS terminology for false positive malignancies seen on breast imaging. The following cases will be reviewed: lymphoma/leukemia, infiltrating squamous cell cancer, metastases (melanoma, carcinoid, endometrial cancer, bronchogenic carcinoma), sarcoma (angiosarcoma and carcinosarcoma), and malignant phyllodes.

Conclusion
Mammograms can also detect non-breast malignancies. Although these are classified as false positives in the MQSA audit, they are still important to the patient and have significant consequences.