Ultrasound patterns of disorders affecting the gastrointestinal tract.

Morgan, C.; Trought, W S; Oddson, T A; Clark, Wayne M.; Rice, R P

doi:10.1148/radiology.135.1.7360950

Cited by 94 publications

(22 citation statements)

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“…With regard to the detection of bowel abnormalities, the present study confirms the sonomorphology de scribed by others [2,4,6,13,[21][22][23][24][25], In particular, target signs, thickening of the terminal ileum ( fig. 1) and bowel loop conglomerates were seen.…”

Section: Discussionsupporting

confidence: 90%

“…A sen sitivity of 84% and a specificity of 91% have been reported [1], largely based on the presence of a patholog ical 'target sign'. This has been questioned, however [2], In addition, US has been shown to be helpful in the assessment of acute abdominal complaints related to the intestinal tract [3][4][5], It has been described in casuistic form that intestinal complications such as fistulae, ab scesses, and bowel conglomerates can be detected [6]. Thus, it might be possible to add US to the known meth ods to assess activity in CD.…”

mentioning

confidence: 99%

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Detection of Extraintestinal and Intestinal Abnormalities in Inflammatory Bowel Disease by Ultrasound

Schölmerich¹,

Braun²,

Volk³

et al. 1987

Dig Surg

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Abdominal ultrasound (US) can detect extraintestinal and intestinal manifestations and complications of Crohn’s disease. However, the clinical value of routine examination of all patients with inflammatory bowel disease is not known. A total of 100 patients (70% outpatients) with inflammatory bowel disease – 74 Crohn’s disease (CD) and 26 ulcerative colitis (UC) – was studied by US without knowledge of clinical or laboratory data except the diagnosis of inflammatory bowel disease. 39% of the patients with CD showed intestinal abnormalities (target sign: 18%, bowel conglomerates 5%, bowel wall diameter > 5 mm: 20%, prestenotic dilatation: 1%), while 35% of patients with UC had such abnormalities (19% target sign and 27% increased bowel wall diameter). Gallstones were found in 12% of patients with CD and 4% of those with UC. Cholecystectomy had been performed in 7 and 4%, respectively. Renal stones were found in 4 and 8%, liver abnormalities in 19% of both patient groups. Overall, in 30 and 27% at least one extraintestinal abnormality was seen. No clear correlation of disease activity with the occurrence of intestinal or extraintestinal findings was found in CD while bowel abnormalities were more likely to be detected in patients with active UC. None of the laboratory parameters assessed predicted the finding of gallstones, renal stones or liver abnormalities. Renal stones occurred more often in patients with ileal resection and longer duration of disease. US was found to be useful in the routine investigation of patients with inflammatory bowel disease since it detects a considerable number of extraintestinal complications. In addition, it can demonstrate intestinal abnormalities and complications and might be an additional noninvasive method to assess disease activity in UC.

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Section: Discussionsupporting

confidence: 90%

mentioning

confidence: 99%

Detection of Extraintestinal and Intestinal Abnormalities in Inflammatory Bowel Disease by Ultrasound

Schölmerich¹,

Braun²,

Volk³

et al. 1987

Dig Surg

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“…Thickness of bowel wall of more than 3-5 mm should be considered pathological, but the nondistended large bowel segment in adults may present wall thickness of 6-9 mm physiologically [12]. The sonographic pattern of quite a number of intestinal diseases with bowel wall thickening is similar [13,14,15,16,17]. Findings in a child with intestinal tuberculosis were identical and even ulcerative colitis may show an indistinguishable echo-pattern [8].…”

Section: Discussionmentioning

confidence: 99%

Real-time ultrasound in Crohn's disease: characteristic features and clinical implications

et al. 1986

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Thirty-two children with Crohn's disease were evaluated by real-time ultrasonography. The typical pattern of Crohn's disease caused by bowel wall thickening is the "bull's eye phenomenon", the elongated tubular stiff bowel loop with narrowing of the lumen and the small bowel conglomerate tumor. In indefinable abdominal complaints sonography may lead to the correct diagnosis. The differential diagnosis of similar sonographic features and the limitations of ultrasound in gastrointestinal disease must be considered. In proven Crohn's disease the findings in follow-up match the clinical course and may delineate complications, such as ileus, abscess, hydronephrosis, gallstones or involvement of parenchymal organs, as seen in 15 patients. Thus ultrasound will restrict repeated x-ray studies and support patient management.

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“…The finding is visible on cross-section through the transverse axis of the invaginated intestinal segment, and is formed by a hypoechoic ring a r o u n d the echo-dense center [1][2][3][4][5][6][7]. The hypoechoic periphery corresponds to edematous walls of intussuscipiens while the central echoes represent multiple interfaces o f the mucosal and serosal layers of the intussusceptum [7,8].…”

Section: Discussionmentioning

confidence: 99%