Microcalcifications are tiny specks of mineral deposits (calcium), that can be scattered throughout the mammary gland, or occur in clusters.They can also be found in the prostate in men and lead to prostatic hyperplasia. They are caused by a number of reasons: Aging - the majority of diagnoses are made in women over 50 Benign causes Genetic - invo...
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http://en.wikipedia.org/wiki/Microcalcification
A tiny deposit of calcium in the breast that cannot be felt but can be detected on a mammogram. A cluster of these very small specks of calcium may indicate that cancer is present.
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http://www.cancer.gov/dictionary?expand=M
<radiology> Particles observed on a mammogram that are found in the breast tissue, appearing as small spots on the picture. ... Usually occur from calcium deposits caused by death of breast cells which may be benign or malignant. When clustered in one area, may indicate the presence of cancerous cells. ... (14 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
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