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Query: UMLS:C0021933 (intussusception)
 3,822 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Lead points that are the cause of an ileocolic intussusception are rare in infants [1], as is successful reduction using barium [2]. Air reduction of an intussusception with a pathologic lead point has not been previously reported. We report a case of an infant with an ileocolic intussusception secondary to a duplication cyst that was successfully reduced with air. The pathologic lead point was recognized at the time of reduction and confirmed with water-soluble contrast. Air is both a diagnostic and therapeutic contrast agent.
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PMID:Air reduction of an intussusception caused by a pathologic lead point in an infant. 836 37

To determine what practices are being utilized in the management of intussusception, a survey was sent to chairpersons of 64 Pediatric Radiology departments in the United States and Canada. There was a 92% response rate. Barium is used in 97% of departments and is the most commonly used contrast-agent in 64%. Water-soluble contrast is used in 83% of departments and air in 50%. In high-risk patients, water soluble contrast is used in 71% of departments, air in 28% and barium in 24%. Glucagon, pre-exam antibiotics, and pre-exam sedation are not used regularly in a majority of departments. The radiologic management of intussusception is more varied than only a few years ago. Use of water-soluble contrast and air have increased, while barium use is less routine.
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PMID:The current radiologic management of intussusception: a survey and review. 846 7

Construction of a neobladder utilizing intestine is currently considered to be the ideal option for the cystectomized patient. We reviewed the history as well as the physical and urodynamic principles of the substitution neobladders and continent reservoirs. In our series of patients who underwent cystectomy from January 1988 to December 1991, we have performed bladder substitution using detubularized ileum in 37 patients (18 Camey II and 16 Hautmann) and 13 patients had a continent reservoir (Mainz pouch). Patient ages ranged from 33 to 72 years (mean 60.4). The functional behaviour of the intestinal neobladders was analyzed clinically, radiologically and urodynamically. Eleven of the 18 patients with a Camey II (61.8%) and 3 of the 16 with a Hautmann (18.7%) neobladder were incontinent during the night, the difference being statistically significant (p < 0.05). Incontinence correlated manometrically with high pressure peaks in the Camey II neobladders and waves with a lower intensity were recorded in the Hautmann neobladders. Flowmetry revealed a normal peak flow in all but one Camey II that required internal urethrotomy due to urethroileal stenosis. The maximum capacity was 215-500 cc for the Camey II (mean 340 cc), 310-850 cc for the Hautmann (mean 590 cc) and 350-925 cc (mean 675) for the Mainz pouch. Intermittent catheterization was required in 3 of the Camey II and 1 of the Hautmann neobladder with important postmicturition residual urine. The patients who received the Mainz pouch had good continence, with pressure recordings less than 55 cm H2O), which is lower than the continent closing pressure. Only one case was incontinent due to failure of the intussusception mechanism. The good functional results achieved with the Hautmann procedure are underscored. The pressure recordings and the incidence of night incontinence for the foregoing procedure were lower than the Camey II. For the unviable urethra, the Mainz pouch achieves moderate pressures and is socially acceptable.
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PMID:[Urodynamic basis and findings in detubularised intestine neobladders: bladder substitutions and continent urinary reservoirs]. 149 72

Twenty-seven cases of small bowel tumour confirmed surgically and pathologically have been studied. The sonographic appearances are described as well as a method of ultrasound detection following water ingestion. Tumours were classified into: (i) intraluminal tumours (duodenal adenocarcinoma n = 5; distal ileal lipoma with intussusception, n = 1; (ii) intramural tumours (proximal jejunal adenocarcinoma, n = 2; jejuno-ileal lymphoma, n = 5; (iii) extraluminal tumours (duodenal leiomyosarcoma, n = 2; neurilemmoma, n = 1; jejuno-ileal leiomyoma, n = 4; leiomyosarcoma, n = 6; subserosal lymphangioma, n = 1). Observing the lesion intermittently over a period of 1 h after water ingestion improves the localization of tumours within the small bowel.
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PMID:The sonographic appearances of small bowel tumours. 164 79

A case of idiopathic colonic intussusception in a 39-year old woman is reported. The main features of the disease are reviewed: the clinical presentation may be subacute or chronic, diagnosis is based on ultrasonography and water-soluble contrast media enema. Because of the frequency of malignancy primary resection in the treatment of choice.
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PMID:[Intestinal intussusceptions in adults. Apropos of a case of spontaneous colo-colonic intussusception]. 185 14

The hydrostatic pressures and flow rates of barium sulphate and water soluble contrast in concentrations representative of those used for intussusception reduction were measured. The change of height with discharge of fluid from the filled kit was also assessed. A group of experienced paediatric radiologists and radiographers significantly underestimated the height to which contrast should be placed for intussusception reduction. The results indicate that baseline hydrostatic reduction pressures tend to be less and maximum pressures significantly less than those presently advocated for pneumatic reduction. This disparity may account for the apparent improvement in intussusception reduction rates reported for air enema when compared with barium enema. Intraluminal pressure monitoring during contrast enema would aid control of intussusception reduction but hydrostatic reduction would still be at a disadvantage because of lower flow rates. Where hydrostatic reduction is performed, the contrast density and height used should be set to give known pressure, according to local guidelines.
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PMID:Are hydrostatic and pneumatic methods of intussusception reduction comparable? 189 Dec 59

One of the major limitations of continent intestinal reservoirs currently in use is failure of the efferent continence mechanisms. Unsatisfactory results have been reported in the literature in up to 40% of cases. While progress has been made toward better continence in urinary diversions, evolution of the actual continence mechanisms has been along two rather distinct paths: those with a valve mechanism placed inside the pouch (either by intussusception or surgical insertion), and those with the valve outside to the pouch (by imbrication of an externally located ileal segment). A canine experimental model was used to investigate a type of intraluminal continence mechanism and to compare it to an extraluminal imbricated ileocecal valve. In eight mongrel dogs a reservoir was made out of ascending and transverse colon with two different valve mechanisms--one intraluminal and one extraluminal--connected via separate stomas to the skin. Radiographic, sonographic, endoscopic and urodynamic studies of the pouch and its outlets were performed. Results showed that, in contrast to the extraluminal valve, continence in the intraluminal valve was volume dependent. The valve closing pressure of the intraluminal continence mechanism increased far beyond the values of the extraluminal valve (50.38 vs. 30.12 cm. H2O) at maximum pouch filling. Leakage of the intraluminal valve was observed at significantly higher pouch volumes than in the extraluminal valve (348 cc vs. 215 cc). In view of these results, the volume dependent intraluminal valve mechanism appears superior to an extraluminal type, especially at higher pouch volumes.
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PMID:Tapered intraluminal versus imbricated extraluminal valve: comparison of two continence mechanisms for urinary diversion. 230 81

The pressures generated by a barium suspension and various solutions of meglumine sodium diatrizoate in water were measured with a manometer. A pressure of 120 mm Hg was produced by a 3.5-foot (105-cm) column of 60% wt/vol barium and a 5-foot (150-cm) column of either a 1:3 or 1:4 solution of meglumine sodium diatrizoate and water. This is the pressure used to reduce an intussusception with air.
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PMID:Intussusception: hydrostatic pressure equivalents for barium and meglumine sodium diatrizoate. 231 70

A unusual case of colorectal intussusception after transanal surgery of a polyp of the sigmoid colon is presented. Clinical Signs consisted of transanal bleeding and mucous diarrhoe. The diagnosis was established after an enema with water-soluble contrast media and computed tomography of the pelvis. The radiological appearance was similar to that of intussusception at other sites of the large bowel: The enema showed a sharply outlined filling defect whereas CT demonstrated a target-like intraluminal mass.
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PMID:[Colorectal invagination in adults following removal of a sigmoid polyp]. 232 Aug 72

In contrast to childhood, idiopathic intussusception in adults is quite rate. We report on the diagnosis (conventional plain x-ray films, sonography, coloscopy, enema) of a clinically atypical colo-colic invagination in a 29-year old woman. Since no tumour-related cause was found, disinvagination by a water-soluble contrast enema material was successfully performed.
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PMID:[Idiopathic intussusception in adults]. 268 79


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