Although the concept of triangulation of breast lesions has been well-defined in the literature, it is still frequently misunderstood or applied incorrectly. We provide a review of the basic concept, discuss common misapplications of triangulation and the reasons they happen, and demonstrate typical and exceptional cases, as well as mammography-ultrasound correlations using diagrams and illustrative cases. © 2008 Mosby, Inc. All rights reserved.
