microcalcifications
Tiny calcium deposits in breast tissue that appear as small bright spots on mammography, potentially indicating malignancy depending on their pattern and distribution.
Full Definition
Microcalcifications are small calcium deposits within breast tissue that appear as punctate high-density spots on mammographic images. These deposits can occur in both benign and malignant conditions, making their morphology and distribution pattern crucial for interpretation. Suspicious characteristics include pleomorphic (varied shape and size), linear, or branching patterns, particularly when clustered in a segmental distribution. Such patterns may indicate ductal carcinoma in situ or early invasive carcinoma. Benign microcalcifications typically appear uniform, round, or coarse, often in scattered distribution. The BI-RADS classification system provides standardized descriptors for microcalcifications. When suspicious patterns are identified, stereotactic biopsy is usually recommended for definitive diagnosis. Digital mammography and tomosynthesis have improved detection and characterization of these subtle findings.
Usage
Usage note: Distinguish from macrocalcifications, which are typically benign; always describe morphology and distribution pattern.
In Context
- "Clustered pleomorphic microcalcifications in the upper outer quadrant require biopsy." — Mammography report
- "Stereotactic biopsy of the suspicious microcalcifications revealed high-grade DCIS." — Pathology correlation