High-resolution microCT to assess breast microcalcification morphometry by histologic lesion subtype and radiologic...

Area of Science:

• Biomedical Imaging
• Radiology
• Pathology

Background:

• Breast calcifications are common mammographic findings.
• Distinguishing benign from malignant calcifications is crucial for patient management.
• Current methods for calcification analysis have limitations.

Purpose of the Study:

• To assess associations of 3D morphometry of breast calcifications with underlying histopathology.
• To evaluate the potential for classifying tissue calcifications to optimize identification and diagnosis of severe breast pathology.

Main Methods:

• Compared morphometry of 12,216 calcifications in 156 breast tissue blocks (benign, ductal carcinoma in situ, invasive carcinoma) using microCT.
• Analyzed 3D reconstructions of calcifications and compared morphometry to pathologic diagnosis.
• Radiologists assessed biopsy need and calcification morphology from microCT images.

Main Results:

• Breast cancer-associated calcifications were significantly larger and more cylindrical than benign ones.
• Calcification volume positively associated with ductal carcinoma in situ grade.
• Radiologists achieved 92% agreement on biopsy recommendations with moderate sensitivity and specificity.

Conclusions:

• Tissue calcification morphometry varies by lesion type, supporting potential for classification.
• Future studies may develop a pathologic classification linked to diagnosis and mammographic findings.
• 3D microCT analysis offers a novel approach to characterizing breast calcifications.