For early detection

Mammogram is a proven imaging application for breast cancer screening in asymptomatic population, as well as for diagnostic purpose in women presenting with breast lumps. 

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Mammogram is able to detect *DCIS (ductal carcinoma in-situ), a localised form of very early breast cancer before it turns invasive.  Some authority even regard DCIS as a pre-cancerous state and it can predate the onset of invasive cancer by up till decades. 

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For those with breast lumps, mammogram can characterise the lesion to indicate its nature. 

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Oftentimes other imaging tools are used concurrently when a breast mass is detected on mammogram, e.g. Ultrasound, MRI breast and image guided tissue biopsy. 

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