+ Small bowel dilation on CT scan in adults Diameter Assessment 4 cm Severely dilated A small bowel obstruction as seen on CT Average inner diameters and ranges of different sections of the large intestine. The main diagnostic tools are blood tests, X-rays of the abdomen, CT scanning, and ultrasound. If a mass is identified, biopsy may determine the nature of the mass. Radiological signs of bowel obstruction include bowel distension and the presence of multiple (more than six) gas-fluid levels on supine and erect abdominal radiographs. Ultrasounds may be as useful as CT scanning to make the diagnosis. Contrast enema or small bowel series or CT scan can be used to define the level of obstruction, whether the obstruction is partial or complete, and to help define the cause of the obstruction. The appearance of water-soluble contrast in the cecum on an abdominal radiograph within 24 hours of it being given by mouth predicts resolution of an adhesive small bowel obstruction with sensitivity of 97% and specificity of 96%. Colonoscopy, small bowel investigation with ingested camera or push endoscopy, and laparoscopy are other diagnostic options. File:UOTW 20 - Ultrasound of the Week 1.Small bowel obstruction on ultrasound File:UOTW 20 - Ultrasound of the Week 2.Small bowel obstruction on ultrasound File:UOTW 20 - Ultrasound of the Week 3.Small bowel obstruction on ultrasound Differential diagnosis Differential diagnoses of bowel obstruction include: * Ileus * Pseudo-obstruction or Ogilvie's syndrome * Intra-abdominal sepsis * Pneumonia or other systemic illness
complications of Hirschsprung's disease
complications of Intussusception 
complications of Pyloric stenosis
complications of Crohn's disease
symptom of Hirschsprung's disease
complications of Hiatal hernia
complications of Short bowel syndrome
complications of Diverticulitis