Surgical Pathology Criteria

Radial Scar of the Breast

Differential Diagnosis

Tubular Carcinoma Radial Scar
Single layer of cells Often multiple cell layers
No myoepithelial cells Myoepithelial cells present
Frequent infiltration of fat by naked tubules No bare infiltration of fat
No epithelial hyperplasia May show epithelial hyperplasia
Both have a stellate configuration with radiating fibrous arms and fibroelastotic stroma

 

Infiltrating Ductal Carcinoma Radial Scar
Cells may show various levels of atypia Cytologically bland cells
No myoepithelial cells Myoepithelial cells present
Frequent infiltration of fat by naked tubules No bare infiltration of fat
May show various infiltrative patterns Stellate configuration

Radial Scar, Sclerosing Adenosis, Ductal Adenoma and Nipple Adenoma

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