Diagnosing Breast Lesions - MBPBLESNS06W.2023
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This activity is intended for pathologists participating in the multidisciplinary breast pathology program or pathologists looking for more information on the role of immunohistochemistry (IHC) in the differential diagnosis of breast lesions.

Credit Type: CME
Duration: 1 hour 15 minutes
Launch Date: June 29, 2023
Expiration Date: June 29, 2026 11:59 PM (CT)
Pricing: Junior Member Fee: $10.00
MOC Category: Medical Knowledge, Patient Care

This activity is part of the Multidisciplinary Breast Pathology (MBP) learning series. Save 10% when you purchase all of the courses in this series together. Below are the courses included in the series. Click here to review and purchase all courses in the series.

  • 2018 HER2 Focused Update
  • Diagnosing and Classifying Hyperplasia, Atypical Hyperplasia and Low Grade DCIS
  • Diagnosing Breast Lesions
  • Getting Your Message Across: Effective Communication Strategies for Breast Pathologists
  • Invasive Breast Cancer and Risk of Recurrence Testing
  • Understanding Breast Imaging Terminology

Rereleased Activity
This activity was originally released as Diagnosing Breast Lesions and was available between July 1, 2020 and June 30, 2023. The content was reviewed in November 2022.

Immunohistochemical studies are increasingly used to assist the diagnostic evaluation of breast lesions. The activity will emphasize potential pitfalls in interpretation and will discuss both common as well as less recognized (but often more challenging) sources of diagnostic error. You will learn correlative morphologic features to help you interpret confusing or indeterminate IHC results. You will also gain an understanding of the appropriate settings in which these IHC studies may be diagnostically helpful and an appreciation of their uses and limitations in daily practice.

After you complete the activity, you will be presented with a 5-question assessment.

After completing this activity, you should be able to:

  1. Interpret commonly used immunohistochemical studies.
  2. Recognize potential interpretative pitfalls.
  3. Utilize correlative morphologic features to avoid misdiagnosis.

Yunn-Yi Chen, MD, PhD, FCAP
Melinda Lerwill, MD, FCAP

CME Information
Accreditation: The College of American Pathologists (CAP) is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

CME Category 1: The College of American Pathologists designates this internet enduring material educational activity for a maximum of 1.25 AMA PRA Category 1 Credit™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Payment Information
To pay with a check, print a copy of this page and send it with your check to the address below. You will be notified when your payment has been processed and you have been registered into the activity.

College of American Pathologists
CAP Learning
325 Waukegan Road
Northfield, IL 60093-2750

Refund Policy
Refunds will be handled on an exception basis. Please submit your request to the CAP in writing via email at education@cap.org or fax at 847-832-8006.

Technical Requirements
Pop-up blockers must be turned off.

The CAP recognizes that some Veteran’s Administration, US Government, and military participants may have difficulty accessing the online activity. If you experience difficulty or have any questions, please contact a representative of the Customer Contact Center at 800-323-4040 option 1 or education@cap.org.

This activity and evaluation are available June 29, 2023, and expire June 29, 2026, at 11:59 PM (CT). Upon completion of the activity your credit will be awarded. Your certificate may be downloaded from your Transcript.


Non-Member Price:   $65.00  
Member Price:  $50.00   

Diagnosing Breast Lesions