Current status of echography (ultrasound).

Ultrasonic demonstration of the anatomy and pathology of solid and fluid-filled organs and structures of the upper abdomen, the retroperitoneum and the pelvis is now well established, as is its use for examination of the thyroid gland, breast, the orbit, the heart, the scrotum and soft tissue masses. Aspiration of cytological and histological material for tissue diagnosis and other purposes is performed in a number of centres. Echography and computed tomography of the abdomen are complementary and there is a trend towards combined units so that each service may be used more efficiently.