Ultrasound of colorectal cancer (1) "false kidney sign"-shaped lumps: Colorectal cancer in the form of abdominal mass, bowel wall thickening and hardening of tumor invasion into the block. B-abdominal echo showed hypoechoic peripheral to the substantive like the kidney cortex, the center is strong echo residual cavity gas collection systems like the kidneys, it was this name. But no renal pyramid, renal pelvis, ureter and other structures, ultrasonography can not find the renal artery blood flow in the tree-specific plans. Normal renal echo probe two waist. Mass cross-section appear before "target sign." Probe stimulate peristalsis in part or in mass repression, the central echogenic area showing that small bubbles of liquid flow. Abdominal examination of the details is difficult to clear lesions.
Large intestine ultrasound (2) colorectal cavity performance: mass type. Local broke into the intestinal lumen was relatively high or low echo of substantial mass, with a certain thickness, the rear there is decay, the surface rough cauliflower or mulberry-like, resulting in children lumen stenosis. ulcer type. Irregular bowel wall thickening. Marginal uplift. Centers or pelvic floor was dish-type depression. Cottony or fluffy surface echo, or showed a crater-like. flat elevation type. Wall thickening greater than 5 mm, fixed rigid hierarchy disappeared, crawling away.
Ultrasound of colorectal cancer (3) luminal stenosis: the gut of new biological or other causes of secondary signs.
"Brook sign" broke into the intestines advanced cancer. Surface uneven, residual stenosis of the lumen, a gas flow through the liquid slowly, like a stream flow of so called "brook sign." Peristalsis of small bubbles when the liquid and to accelerate activities expanded from the intestine into the stenosis, and rapid fluid flow like a wisp of smoke, known as "smoke sign." These dynamics set off the edge of the tumor, and determine the size of the narrow cavity.
Ultrasound of colorectal cancer (4) lymph nodes: lymph nodes normal bowel ultrasound is difficult to show that in advanced tumors or intestinal wall was swollen lymph glands around the relatively hypoechoic nodules, ranging in size, edge and more clear, round shaped or oval, the larger of up to 2 cm x3 cm.
Ultrasound of colorectal cancer (5) tumor perforation serosal invasion to adjacent tissue: the formation of intestinal lesions associated with irregular hypoechoic areas, occasionally severe rectal cancer bladder perforation to the bladder, bladder fistula formation of bladder or rectum the formation of rectovaginal throw into confusion, the image shows a stool sample in the bladder contents. The patient also had the exhaust v. described the phenomenon of urine or feces dirty juice.
Ultrasound of colorectal cancer (6) liver, stomach, kidney and other intra-abdominal metastasis: hepatic flexure of colon or colon cancer or lymphatic spread and easy way to survive direct transfer to the liver, multiple hypoechoic liver metastases occur, such as the peritoneal metastasis occurs ascites. A small amount of ascites, rectal probe in the rectum, bladder pouch cavity were few anechoic areas. During a drift of the intestine.
Ultrasound of colorectal cancer (7) around the organs under pressure: cecum, or colon cancer can compress the ureter or bladder. A huge mass, obstructed ureteral reflux, hydronephrosis caused further thickening.