الفهرس 
Role of different imaging modalities in the evaluation of normal and diseased thymus
AbstractOnly 14 pages are availabe for public view
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Abstract
On ultrasound of infants and young children, the thymus appears with homogenous echo texture similar to the liver but less than the muscle and with multiple echogenic foci or strands. These foci give a 2starry sky3 appearance and help to identify thymic tissue. The characteristic ultrasound appearance is also helpful to identify normal anatomical variants like cervical or retrocaval extension of the thymus. Ultrasound also helps to identify the solid or cystic nature of a suspected thymic mass and the presence of any fat or calcification within. It is also useful for image guided aspiration or biopsies of thymic masses. Being a low cost, portable and easily available modality with lack of ionizing radiation, sonography can be useful as first line investigation for the evaluation of suspected thymic lesion in infants