This 55 yr. old male patient underwent routine sonography of the abdomen. The scan reveals a rounded, solid, soft tissue lesion (isoechoic with the colon) of size 17 x 10 mm, in the lumen of the ascending colon. An atypical target sign is also seen. Color doppler shows a feeder vessel supplying the mass lesion. These ultrasound images suggest colonic polyp. Sonographic images taken using a Toshiba Powervision color doppler machine, courtesy of Dr. Ravi Kadasne, UAE. The polyp was also visualized on CT scan (see images above) and also on colonoscopy (above).
Reference:
1)http://en.wikipedia.org/wiki/Polyp_(medicine)(free article).