Duodenal atresia. The incidence of duodenal atresia is 1 in 10,000 live births. The characteristic "double-bubble" sign, corresponding to the dilated stomach and the duodenum, can be seen on ...

Transrectal ultrasound (TRUS) examination of the prostate ... The outer gland is usually more echogenic than the inner gland; the boundary between the two represents the 'surgical capsule' of ...