Diagnostic ultrasonography is a valuable, non-invasive quick, widely available, relatively inexpensive, painless & accurate diagnostic tool that is capable of portraying fine structure in considerable detail. Ionizing radiation is not involved in ultrasonography & can be repeated as often as necessary without the risk to patient. Ultrasonographic examination was superior to clinical examination as it delineate not only the presence & location but also the internal nature of disease. The use of real -time ultrasonography with high-frequency transducers can significantly improve the...