Figure 3. Ultrasound catheter probe scan of a T1 tumour. A hypoechoic mass (large arrow) extends into the submucosa (arrow-sm). Note that the muscularis propria is intact beneath the hypoechoic mass.
Figure 3. Ultrasound catheter probe scan of a T1 tumour. A hypoechoic mass (large arrow) extends into the submucosa (arrow-sm). Note that the muscularis propria is intact beneath the hypoechoic mass.