Differentiation of benign and malignant bowel lesions by transabdominal ultrasound using grey-scale and Doppler parameters

Transabdominal ultrasonographic features in the diagnosis of gastrointestinal lymphoma

“…The main ultrasonographic features detected by transabdominal ultrasound in our patients were increased wall thickness (seen in all patients with a mean value of (15.6 mm) in relation to the normal median value of each site (~5 folds), loss of layering pattern present in 16 patients (76%), other features included hypoechogenicity of the wall, the proximal dilatation, and the perilesional lymph gland enlargement. Ultrasound can be used as tool for characterization and differentiation between benign and malignant bowel lesions based on the degree of wall thickness, loss of wall layering and length of affected segment, however other indices like resistivity index (RI), pulsatility index (PI) of the intramural vessels and superior mesenteric artery (SMA) showed no difference between the inflammatory and malignant groups (25).…”

Acute right upper quadrant diverticulitis: an unusual sonographic finding in a young adult patient

“…Bowel neoplasia is also a possibility especially in an older patient. In bowel neoplasia however, there will be tissue plane invasion and loss of distinct bowel wall layering on ultraosound . In addition, colon neoplasms often demonstrate an echo‐poor region with a hyperechoic centre as opposed to the hypoechoic centre observed in this case …”

The role of intestinal ultrasound in diagnostics of bowel diseases

“…Based on the intensity of colour signals and analysis of Doppler curves with measurement of resistivity index, the examiner can visualise and quantify intestinal wall vascularisation. Hyperdynamic splanchnic blood flow is characteristic for acute inflammation [ 11 , 12 , 15 ]. Although this method helps to distinguish inflamed and uninflamed parts of the bowel, it is not always suitable for the assessment of the severity of the disease.…”

“…The presence of neovascularisation is a hallmark of malignant tumour. Thus, application of this method could improve the diagnostics of intestinal neoplasms [ 15 ].…”