*3.3.2 Ureter*

Normal ureters are not visualized by ultrasonography. However, in case of obstruction to urine outflow, distended ureters can be seen with POCUS. The cause of obstruction in trauma can be varied, such as hematoma and foreign body (**Figure 10**).

**Figure 10.** *Dilated proximal ureter with hydronephrosis [21].*
