Which mammographic finding is MOST strongly associated with ductal carcinoma in situ (DCIS)?

• A Round macro-calcifications in a cluster
• B Coarse heterogeneous calcifications within an oil cyst
• C Eggshell (rim) calcifications
• D Pleomorphic fine linear/branching microcalcifications in a segmental distribution ✓

Explanation

DCIS classically presents as pleomorphic, fine linear ('casting') or fine branching microcalcifications in a linear or segmental distribution, reflecting intraluminal necrosis and calcification within ducts. Round macrocalcifications and oil-cyst calcifications are benign (BI-RADS 2). Eggshell calcifications are benign fat necrosis. The segmental distribution strongly implicates ductal involvement.

Reference: Grainger & Allison's Diagnostic Radiology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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