<prompt> The sensitivity of mammography is low in young females because :Less glandular tissue and more fatYoung females are less cooperativeYoung breast have dense tissueBecause of less fat content  <response>: The mammographic appearance of breast depends on the relative amount of fat and glandular tissue which are present. Young womans breast contains a large proportion of glandular tissue which appears as a soft tissue density and lowers the sensitivity of mammogram.Mammographic appearance of breast Based on the relative amount of fat and glandular tissue :Glandular breast : Dense breast In young woman, where breast contain large amount of glandular tissue.Adipose breast : Fatty breast In older women, where most of the glandular tissue has involuted.Involuting breast : When mixture of soft tissue and fat density present. 