Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242-1082, USA. jeongmi-park@uiowa.edu
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.