This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Anatomy
All are the Indications of a malignancy in a mammography except 
Select and explain. 
A. Nodular calcification, B. Speckled margin, C. Attenuated architecture, D. Irregular mass
A: Nodular calcification
Answer: A: Nodular calcification 
Explanation: Mammographic features suggestive of breast cancer A solid mass with or without stellate features Asymmetric thickening of breast Clustered microcalcification Presence of fine stippled calcium in and around a suspicious lesion is suggestive of breast cancer and occurs in as many as 50 % of nonpalpable cancers These microcalcifications are an especially impoant sign of cancer in younger women, in whom it may be the only mammographic abnormality