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[Acute intestinal intussusceptions in adults: analysis of 20 cases].

AIM OF THE STUDY: To report our experience in the management of acute intestinal intussusceptions in adults. PATIENTS AND METHODS: Retrospective study of data of patients older than 15 years who were operated on for acute intestinal intussusceptions from January 1997 to December 2001. RESULTS: Twelve of the patients were males and eight females with an average age of 41 years (range: 16-71). The clinical and radiological findings were suggestive of bowel obstruction (N = 14), peritonitis (N = 5) and appendicular abscess (N = 1). Correct preoperative diagnosis of acute intestinal intussusceptions was established in 6 cases. Type of intussusception was jejunojejunal (N = 1), ileo-ileal (N = 8), ileocolic (N = 1), ileocecocolic (N = 7) and colocolic (N = 3). Necrosis was found in the intussusceptum in 10 cases and a tumor on the lead point in 14 cases (5 benign lesions and 9 malignant ones). For intussusception involving the colon, all patients underwent en bloc resection with immediate anastomosis, while intussusception located on the small bowel were treated by surgical reduction (N = 1), en bloc resection (N = 8) with immediate (N = 7) or delayed (N = 1) anastomosis. The mortality rate was 15%. CONCLUSION: In our experience, intussusceptions in adults is not an uncommon clinical entity but correct diagnosis is often established peroperatively. En bloc resection is recommended because of the frequency of neoplasms and bowel ischemia.

Acute Disease↗

[Intussusception owing to pathologic lead points in children: report of 27 cases].

OBJECTIVE: Intussusception owing to pathologic lead points is a challenging condition for pediatric surgeons. The aim of this study was to review the particularities of clinical presentation, the place of morphologic investigation in depicting the presence of an organic lesion and the management of secondary intussusception. PATIENTS AND METHODS: The authors report a series of 27 patients treated from 1986 to 2004, for secondary intussusception. RESULTS: Nineteen boys and 8 girls, aged from 45 days to 11 years (mean age: 40 months) presented with secondary intussusception: Meckel's diverticulum (13 cases); lymphoma (8 cases); intestinal duplication (3 cases); heterotopic pancreas (2 cases); intestinal polyp (1 case). All patients were operated upon after failure of hydrostatic reduction. An intestinal resection with an end to end anastomosis was done for 26 patients. The biopsy of a large abdominal mass after an easy reduction of the intussusception was performed in 1 case. Chemotherapy was started at the sixth postoperative day for the 8 children having lymphoma. Two of them died during therapy. For the 25 others, the postoperative course was uneventful with a mean follow-up of 4 years. COMMENTARY: The improvement of the management and the prognosis of secondary intussusception requires an early diagnosis. Morphologic examination must not be limited to the diagnostic of intussusception but must aim at searching a lead point. The reduction of this particular form is based exclusively on surgery.

Child↗

Clinical application of ultrasonography in the diagnosis of intussusception.

Sixty-five consecutive patients seen in a pediatric emergency department, in whom the diagnosis of intussusception was considered, had an ultrasound examination of the abdomen before a barium enema. The mean age of the patients was 1.7 years (range 2 weeks to 5 years). Intussusception was detected by ultrasonography in all 20 cases proved by barium enema. There were three false-positive ultrasound results (sensitivity = 100%, confidence interval (Cl) = 86% to 100%; specificity = 93%, Cl = 86% to 96%). Normal findings on ultrasonography correlated with a negative barium enema results in 42 of 42 cases (negative predictive value = 100%, Cl = 94% to 100%). No intussusception was missed by ultrasonography. To determine which patients would most benefit from ultrasonography, we divided patients into either a high-risk group (81% with intussusception) or a low-risk group (14% with intussusception) on the basis of clinical symptoms (p less than 0.01). If each high-risk child had a barium enema and each low-risk child had an ultrasound study as their initial diagnostic test, 89% of the patients in this study would have undergone only one examination. We conclude that ultrasonography can be used as a rapid, sensitive screening procedure in the diagnosis or exclusion of childhood intussusception. Children considered at low risk of having intussusception on the basis of clinical symptoms should initially have an ultrasound examination; patients at high risk should have an immediate barium enema.

Barium Sulfate↗

Stool appearance in intussusception: assessing the value of the term "currant jelly".

This study surveyed the stool appearance descriptions of 107 inpatient children with intussusception. Fifty-six patients presented with grossly bloody stools (passed spontaneously), 10 of which were determined on chart review to resemble currant jelly. Of the 51 patients without grossly bloody spontaneously passed stools, 35 patients had rectal examination results charted. Eight of these children had grossly bloody stools noted on rectal examination, 4 of which were determined on chart review to resemble currant jelly. While most of the grossly bloody stools were not consistent with pure currant jelly, the most common terms used in describing the grossly bloody stools were "bloody," "mucus," "red," and "diarrhea." Since stools truly resembling currant jelly account for a minority of the grossly bloody stools in intussusception, the term "currant jelly stools" should be assessed in the teaching of intussusception. Generic terms such as blood, mucus, burgundy, red, etc, are more objective and sensitive at identifying cases of intussusception. Junior physicians who are taught the classic presentation of intussusception with currant jelly stool should also be taught that intussusception should be considered in the differential diagnosis of children passing any type of bloody stool. As a result, physicians with limited experience will be more likely to appropriately consider the diagnosis of intussusception, permitting a more timely diagnosis and a better outcome.

Barium Sulfate↗

Transient adult jejunal intussusception.

Intussusception is a rare cause of abdominal pain in adults. It occurs in fewer than 1% of all cases of adult small bowel obstruction. In the adult population, most cases are the result of some type of intestinal lesion like adhesions, melanomas, lipomas or adenomatous polyps. Idiopathic intussusceptions are an extremely rare occurrence in adults, comprising only 2-23% of diagnosed intussusceptions. This report describes two cases of transient, idiopathic adult jejunal intussusception in a 19-year-old woman and a 39-year-old man, both presenting to the same hospital 1 week apart. Both patients complained of nonspecific abdominal pain and nausea and were diagnosed with intussusception by computed tomography (CT) scan. In both cases, no underlying bowel abnormality was identified and neither required a bowel resection. This report discusses the common presentation, diagnosis, and treatment of adult intussusception and questions whether patients with transient intussusceptions require exploratory laparotomy.

Abdominal Pain↗

Intussusception in adults.

To review clinical, radiological and histopathological findings of adult intussusception and its management, 18 adult patients who had been treated surgically because of intussusception were reviewed. Of the patients, 5 (27.8%) had idiopathic intussusceptions, while the other 13 (72.2%) had a definable intraluminal pathology. The site of the intussusception was more common in the small bowel (83.3%) than the colon (16.7%). Ultrasonography and computed tomography were successful in demonstrating "target lesion" in 80% and 75% respectively. Patients with idiopathic intussusception were treated with simple reduction, while the others underwent segmental resection because of the possibility of malignant tumour. In contrast to intussusception in childhood, intussusception in adults usually has a definable lead point and resection of the involved bowel, rather than simple reduction, is indicated.

Adolescent↗

Pneumatic reduction of intussusception in children.

The use of an air enema in the diagnosis and reduction of intussusception, using a simple home-made device, was prospectively studied in 36 children with the tentative diagnosis of intussusception. Plain abdominal films were inconclusive in 19 patients (53%). Using an air enema, the diagnosis of intussusception was easily reached or excluded in all suspected cases. Twenty-nine patients had intussusception. Their ages ranged from 3 to 20 months (mean: 7 months), and all had ileo-colic involvement. Pneumatic reduction was successful in 23 cases (79%), and reduction was completed within 2-3 minutes in all successfully reduced cases. At operation, three children had a tear of the sero-muscular layer of the transverse colon, but there were no perforations or recurrences of the intussusception in the immediate post-reduction or follow-up period (1-25 months). An air enema is a safe, cheap, clean and reliable procedure for the diagnosis and reduction of intussusception, and can now be considered as the treatment of choice in uncomplicated intussusception.

Child, Preschool↗

Colocolonic intussusception of a giant pseudopolyp in a patient with ulcerative colitis: a case report and review of the literature.

Adult intussusception in the setting of inflammatory bowel disease (IBD) is a rare phenomenon. Giant pseudopolyps, while generally considered benign, may function as lead points for intussusception. Diagnosis and management of intussusception in the setting of IBD can be fraught with hazards. We report the case of a 27-year-old male, recently diagnosed with ulcerative colitis and giant pseudopolyps, who presented with colocolonic intussusception and obstruction. Diagnosis was confirmed using CT imaging and the patient underwent resection of the colocolonic intussusception without reduction. The following case underscores the challenges in managing adult intussusception in the setting of IBD and allows for a review of the literature to date. Resection of non-reduced intussusception, rather than endoscopic or enema reduction, should continue to be definitive treatment of patients presenting with this unusual problem.

Adult↗

Antibiotic-induced mesenteric adenopathy in an intussusception mouse model: a randomized, controlled trial.

BACKGROUND: Idiopathic intussusception is a leading cause of intestinal obstruction in young children. Although the etiology remains obscure, lymphoid hyperplasia is found in a majority of cases. Antibiotics, the most frequently prescribed medication class in the pediatric population, have been recently associated with intussusception. The authors sought to determine whether enteral antibiotic exposure influences the development of mesenteric adenopathy, bowel dilation or intussusception in an animal model. MATERIALS AND METHODS: The authors conducted a randomized, controlled animal trial using a previously described intussusception model. Mice were gavaged with normal saline, amoxicillin-clavulanate or azithromycin twice daily for 5 days to assess the influence of enteral antibiotic exposure on intussusception, mesenteric adenopathy and bowel dilation. One pediatric surgeon performed all laparotomies and was blinded to group designation. Chi2 and Fisher exact tests were used to evaluate differences between antibiotic exposed and control groups. RESULTS: Mesenteric adenopathy was identified in 4.1% of the normal saline controls compared with 54.1% (P < 0.01) and 38.9% (P < 0.01) of the amoxicillin-clavulanate and azithromycin exposed animals, respectively. A total of four intussusceptions were observed in the antibiotic-exposed groups combined whereas no intussusception cases were identified in the control group (P = 0.30). CONCLUSIONS: This is the first study to describe a significant association between antibiotic use and mesenteric adenopathy in any animal species.

Amoxicillin-Potassium Clavulanate Combination↗

Intussusception: trends in clinical presentation and management.

BACKGROUND: The association of a rotavirus vaccine and intussusception has renewed interest in understanding the incidence, clinical presentation and outcome of intussusception. METHODS: A retrospective chart review of all patients diagnosed with intussusception at Royal Children's Hospital, Melbourne over a 6.5-year period (1 January 1995-30 June 2001) was conducted using patients identified by a medical record database (ICD-9-CM code 560.0 1993-1997; ICD-10-CM code 56.1 1998-2001). Patient profile, clinical presentation, diagnosis methods, treatment and outcome were analyzed and compared to data previously reported on children with intussusception at the same hospital during 1962-1968. RESULTS: The hospitalization rate for primary idiopathic intussusception increased marginally from 0.19 to 0.27 per 1000 live births during the period 1962-1968 to 1995-2001. Most patients (80%) were <12 months of age (median age 7 months, range 2-72 months). The combination of abdominal pain, lethargy and vomiting was reported in 78% of infants. Air enema confirmed the diagnosis of intussusception in 186 of 191 cases (97%) and air reduction was successful in most cases (82%). Factors associated with increased risk of intestinal resection included abdominal distension (32%), bowel obstruction on abdominal X-ray (27%) and hypovolemic shock (40%). No mortality was observed in the present study. CONCLUSIONS: Over the past 40 years at Royal Children's Hospital, Melbourne the hospitalization rate due to primary idiopathic intussusception has marginally increased from 0.19 to 0.27 per 1000 live births. Diagnosis and treatment using air enema has been highly successful, resulting in a reduction in patients requiring surgery and reduced hospital stays.

Child↗

Outcome and management of patients with large rectoanal intussusception.

OBJECTIVES: Rectoanal intussusception is the funnel-shaped infolding of the rectum, which occurs during evacuation. The aims of this study were to evaluate the risk of full thickness rectal prolapse during follow-up of patients with large rectoanal intussusception, and whether therapy improved functional outcome. METHODS: Between September 1988 and July 1997, patients diagnosed with a large rectoanal intussusception by cinedefecography (intussusception > or = 10 mm, extending into the anal canal) were retrospectively evaluated. Patients with full thickness rectal prolapse on physical examination or cinedefecography were excluded, as were patients with colonic inertia or a history of surgery for rectal prolapse. The patients were divided into three groups according to the treatment received: group I, conservative dietary therapy; group II, biofeedback; and group III, surgery. Outcomes were obtained by postal questionnaires or telephone interviews. Parameters included age, gender, past medical and surgical history, change of bowel habits, fecal incontinence score, and development of full thickness rectal prolapse. RESULTS: Of the 63 patients, 18 were excluded (seven patients had confirmed full thickness rectal prolapse, four had previous surgery for rectal prolapse, three had colonic inertia, and four died). Follow-up data were obtained in 36 (80%) of the remaining 45 patients. The mean follow-up of this group was 45 months (range, 12-118 months). There were 34 women and two men, with a mean age of 72.4 yr (range, 37-91 yr). The mean size of the intussusception was 2.2 cm (range, 1.0-5.0 cm). The patients were classified as follows: group I, 13 patients (36.1%); group II, 13 patients (36.1%); and group III, 10 patients (27.8%). Subjectively, symptoms improved in five (38.5%), four (30.8%), and six (60.0%) patients in the three groups (p > 0.05). Among the patients with constipation, the decrease in numbers of assisted bowel movements per week (time of diagnosis to present) was significantly greater in group II compared to group 1 (8.1+/-2.8 vs 0.8+/-0.5, respectively, p = 0.004). Among the patients with incontinence, incontinence scores improved more in group II as compared to either group I or group III (time of diagnosis to present, 3.7+/-4.2 to 1.1+/-5.4 vs 1.4+/-2.2, respectively, p > 0.05). Six patients (two in group I, three in group II, and one in group III) had the sensation of rectal prolapse on evacuation; however, only one patient in group I developed full thickness rectal prolapse. CONCLUSIONS: This study demonstrated that the risk of full thickness rectal prolapse developing in patients medically treated for large intussusception is very small (1/26, 3.8%). Moreover, biofeedback is beneficial to improve the symptoms of both constipation and incontinence in these patients. Therefore, biofeedback should be considered as the initial therapy of choice for large rectoanal intussusception.

Adult↗

Adenovirus and intranuclear inclusions in appendices in intussusception.

AIMS: To examine the light and electron microscopic features of appendices removed at the time of surgical reduction of intussusception in children; and to confirm that the viral inclusions seen in some of them are due to adenovirus. METHODS: A series of 39 appendices from cases of intussusception and 15 control appendices were reviewed. Light microscopic examination of haematoxylin and eosin stained sections was performed on all of them and one appendix with large numbers of inclusions was examined by electron microscopy. Non-isotopic in situ hybridisation using a biotinylated DNA probe was carried out on sections of appendix from 30 of the cases of intussusception and from the 15 controls. RESULTS: Light microscopic examination showed viral inclusions in 19 of the appendices from the cases of intussusception and in none of the controls. Electron microscopic examination showed viral particles with the typical features of adenovirus. Most of the appendices with viral inclusions in the haematoxylin and eosin stained sections also contained adenovirus DNA as shown by in situ hybridisation. CONCLUSIONS: Viral inclusions seen in appendices from cases of intussusception are caused by adenovirus. Adenovirus DNA was not demonstrable in appendices from cases of intussusception without viral inclusions and the aetiological factors involved in intussusception in these children remain unknown.

Adenoviridae↗

Air enema for diagnosis and reduction of intussusception: clinical experience and pressure correlates.

Air enema was used for exclusion, diagnosis, initial movement, and complete reduction of intussusception in 186 pediatric patients. Average pressure needed for initial movement of intussusception was 56.5 mm Hg; average maximum pressure of 97.8 mm Hg was required for complete reduction. Average fluoroscopy time required for intussusception reduction was 94.8 seconds; an average of 41.8 seconds was required to exclude intussusception. Intussusception was diagnosed in 75 patients, and reduction was accomplished in 65 (87%). Of 100 consecutive patients that underwent hydrostatic reduction of intussusception at the authors' institution, reduction was successful in 55. Compared with hydrostatic enema, air enema involves shorter fluoroscopy time and lower radiation dose to the patient. Air enema is safe and effective for diagnosis and treatment of intussusception in infants and children and has replaced hydrostatic enema for such procedures at the authors' institution.

Enema↗

Spontaneous reduction of intussusception: verification with US.

PURPOSE: To report cases of spontaneous reduction of intussusception. MATERIALS AND METHODS: The authors reviewed the clinical and imaging findings in four patients with intussusception. Patients ranged in age from 3 to 7 months and were seen over a 12-year period. RESULTS: Intussusception was diagnosed with ultrasound (US) in all four patients; however, when enema studies were performed, intussusception was not identified. Repeat US also failed to demonstrate the presence of an intussusception, and all four patients showed concomitant rapid resolution of symptoms. CONCLUSION: Spontaneous reduction of intussusception is probably more common than is generally thought, and its documentation was facilitated with US. It is likely that spontaneously reduced intussusception will be documented more frequently in the future.

Female↗

Intussusception: US findings with pathologic correlation--the crescent-in-doughnut sign.

PURPOSE: To determine the characteristic ultrasound (US) findings of intussusception and to explain its different components. MATERIALS AND METHODS: Three intussusceptions were surgically induced in pigs, and in vitro US scans were compared with the corresponding pathologic slices. US findings in 44 cases of pediatric intussusception confirmed by means of saline enema examination were analyzed. RESULTS: Axial images of intussusception showed a doughnut pattern. The hypoechoic external ring was formed by the everted returning limb of intussusceptum and, to a lesser degree, by the intussuscipiens. The doughnut's center varied according to the scan level. Scans obtained at the middle or at the base of the intussusception showed a characteristic hyperechoic crescent in all cases. This crescent was formed by the mesentery enclosing the entering limb of the intussusceptum, which the authors have termed the "crescent-in-doughnut sign". On scans obtained at the apex of the intussusception, the center was hypoechoic owing to the entering limb of the intussusceptum and the absence of the mesentery. CONCLUSION: The crescent-in-doughnut sign appears to be a characteristic feature of intussusception.

Animals↗

Intussusception in adults: a 21-year experience in the university-affiliated emergency center and indication for nonoperative reduction.

BACKGROUND: While intussusception is relatively common in children, it is rare in adults. METHODS: We retrospectively reviewed the records of all patients older than 18 years with the diagnosis of intussusception between 1981 and 2001. RESULTS: Eleven patients with surgically or endoscopically proven intussusception were encountered at the University-affiliated emergency center. The patients ranged in age from 19 to 88 years with a mean age of 45 years. Males predominated by a ratio of 7:4. Most patients (82%) presented with symptoms of bowel obstruction. The mean duration of symptoms was 4.5 days with a range of 4 h to 25 days. Correct pre-treatment diagnosis was made in 82% of the patients using abdominal ultrasonography and computed tomography (CT). The causes of intussusception were organic lesions in 64% of the patients, postoperative in 18% and idiopathic in 18%, respectively. 73% of patients had emergency operations, and an attempt at nonoperative reduction was performed and completed successfully in 3 patients with ileo-colic or colonic type of intussusception. There have been no cases of morbidity or mortality in our series and no recurrence has occurred up to the present time. CONCLUSIONS: Abdominal ultrasonography and CT were effective tools for the diagnosis of intussusception. Patients with ileo-colic and colonic intussusception without malignant lesions could be good candidates for nonoperative reduction prior to definitive surgery.

Adult↗

The diagnosis of intussusception.

The aims of this study were to identify features in the history, physical examination, and radiologic studies that were associated with the diagnosis of intussusception and to determine if there was a subset of patients being evaluated for intussusception who can be spared from undergoing a contrast enema based on a combination of historical, clinical, and radiographic findings. A retrospective cohort study at a regional children's hospital emergency department (ED) was conducted. Mean age was 1.2 years among both those with and without intussusception. Predictors of intussusception in the univariate analysis included history of vomiting (P=0.02), abdominal pain (P=0.1), and rectal bleeding (P=0.003); physical examination findings of abdominal mass (P<0.001), abdominal tenderness (P=0.02), and guiac positive stool (P=0.004); and plain radiograph finding of the absence of stool in the ascending colon (P<0.05). We were unable to develop a prediction model that would reliably identify all patients with the diagnosis of intussusception. Previously identified predictors of intussusception remain important in increasing suspicion of this important diagnosis. At this point there is no reliable prediction model that can accurately identify all patients with intussusception. A prospective study may aid in the development of a clinically more useful model.

Abdominal Pain↗

Intussusception reduced by barium enema. Outcome and short-term follow-up.

A retrospective study was performed of 88 consecutive cases of intussusception that occurred during a 3-year period. Forty-eight patients experienced hydrostatic reduction of intussusception with barium enema and 40 patients required surgical correction of intussusception when barium enema reduction was unsuccessful. Patients with fever or duration of symptoms greater than 24 hours, or ileo-ileocolic type of intussusception had a significantly greater rate of unsuccessful hydrostatic reduction (p less than 0.001). Of 48 cases of intussusception hydrostatically reduced by barium enema, 47 patients received repeat physical examination after reduction, 45 having normal findings. Oral feeding was tolerated in these 47 patients within 12 hours after reduction. All 41 hospitalized patients were discharged within 24 hours of reduction without developing complication; of seven non-hospitalized patients, six reported no complications during the initial 24 hour post-reduction period. The single complication that occurred was recurrence of intussusception (ileo-ileocolic type) in a patient 6 hours after initial reduction; this was the only case in which neither post-reduction physical examination nor trial of feeding had been performed. Children with intussusception hydrostatically reduced by barium enema are at low risk for complication during the subsequent 24 hour post-reduction period. When the pre-reduction course has been relatively uncomplicated, the post-reduction physical examination does not reveal abnormalities, and the patient is able to tolerate oral feeding, close outpatient monitoring appears to be safe.

Barium Sulfate↗