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Documentation of spontaneous reduction of childhood intussusception by ultrasound.

Spontaneous reduction of a presumed ileo-colonic intussusception was demonstrated by ultrasound examination followed by a barium enema. No premedication or anesthetic had been given to the child. This case illustrates the possible natural history of intussusception rarely confirmed by imaging studies. Intussusception is the most common abdominal emergency of early childhood. Diagnosis and therapy is usually performed with a contrast enema. If unsuccessful, surgical reduction is indicated. We wish to report a case of spontaneous reduction of a presumed ileocolonic intussusception. This was initially diagnosed by ultrasound examination, but had spontaneously reduced by the time a barium enema was performed.

Humans

Simple device for air reduction of intussusception.

A new device has been developed for pneumatic reduction of childhood intussusception. The device consists of a reusable, hand-held pressure gauge and insufflator connected to a disposable enema tip and tubing system. The assembled device permits one-handed operation which maximizes operator control of the air reduction procedure. The system has been used to evaluate 50 cases of suspected intussusception. Reduction was successful in 19 of 22 confirmed intussusceptions. This device provides a practical, simple and safe method for diagnosis and treatment of intussusception.

Air Pressure

Intussusception of the appendix.

Two cases of intussusception of the appendix are reported--one caused by adenocarcinoma and adenomatous polyp and the other by an endometrioma. Appendiceal intussusception and adenocarcinoma are both uncommon entities and this is the first report of the two occurring concomitantly. Due to variable symptoms, the correct diagnosis of appendiceal intussusception has rarely been made preoperatively. Classification, symptoms, radiographic appearance, and differential diagnosis are discussed, and the authors suggest a new classification for intussusception of the appendix.

Adenocarcinoma

Intussusception in the older child- suspect lymphosarcoma.

Examination of the records of 378 children with intussusception at our institution revealed that 29 cases were caused by an identifiable intestinal lesion. A Meckel's diverticulum was the causative agent in 21 children, all of whom were under 2 yr of age. A previously undiagnosed ileal lymphosarcoma produced the intussusception in six other children, all between 6 1/2 and 9 yr of age. Our experience indicates that any child over 6 yr of age with the clinical findings of colicky abdominal pain, bloody stools, and a palpable mass plus the radiographic evidence of intussusception must be considered to have ileal lymphosarcoma until proven otherwise. Hydrostatic reduction of the intussusception must be accompanied by extensive small bowel reflux of barium in order to effectively rule out a small intestinal lesion. If this is not accomplished, surgery should be planned with the suspicion that a malignancy may be present. If this suspicion is confirmed by frozen section, the operation procedure should include wide surgical excision of the lesion along with the regional lymph nodes.

Child

Nonischemic intussusception.

Nonischemic intussusception is defined as a variant of acute intussusception exhibiting less acute symptoms of abdominal pain, vomiting, and diarrhea in the older child, longer duration of symptoms (usually 4-14 days), signs of imcomplete bowel obstruction, and absence of intestinal ischemia. Over a 10 yr period (1964-1973) 20 children with this disease were treated without mortality or recurrence at three children's hospitals in Chicago, Illinois. The higher incidence of diarrhea, the lower incidence of a palpable abdominal mass, and the lower incidence of blood per rectum in nonischemic intussusception predispose to diagnostic errors and delays in treatment. Despite the longer duration of symptoms, this variant of intussusception can be treated initially with a careful attempt at barium hydrostatic reduction. If this fails, easy operative manual reduction is the rule.

Acute Disease

Progression of intussusception.

The position of the apex in intussusception indirectly reflects the length of the intussusceptum in the majority of cases in which the intussusception begins in the region of the terminal ileum. The relationship of the apex to the duration of symptoms and the ease of enema reduction suggests that progression of intussusception occurs rapidly after the onset of symptoms and is normally complete by the time the patient presents to hospital. Further increase in length of the intussusception is probably limited by progressive edema of the intussusceptum and by the length of small bowel mesentery available to it. The position of the apex per se is not a contraindication to attempted enema reduction, although once the apex has reached the rectosigmoid region successful enema reduction is less likely.

Barium Sulfate

Plasma beta-endorphin levels and childhood intussusception.

To determine whether childhood intestinal intussusception is associated with elevated plasma beta-endorphin levels, a series of patients was studied prospectively. Fourteen patients (age range between 3 months and 7 years) presented to two university pediatric emergency departments in Chicago with clinical symptoms and signs of intussusception. Venous blood (2cc) was withdrawn for plasma beta-endorphin determination, followed by barium enema. Plasma beta-endorphin levels were measured by radioimmunoassay. The mean beta-endorphin level of the 8 patients with barium enema proven intussusception was 14.1 +/- 12.0 pg/ml. Two of these patients presented with marked lethargy and had beta-endorphin levels of 7.5 and 21.2 pg/ml. The mean plasma beta-endorphin level of the 5 patients with negative barium enema studies was 18.1 +/- 10.0 pg/ml (P = 0.56). A sixth control patient had a plasma beta-endorphin level of 1569 pg/ml. In conclusion, childhood intestinal intussusception is not associated with elevated plasma beta-endorphin levels.

Child

Pneumatic reduction of intussusception: clinical experience and factors affecting outcome.

Between 1987 and 1992, 54 patients (32 male, 22 female) underwent 62 attempts at pneumatic reduction of intussusception. The mean age at presentation was 12.5 months (range 2.5 to 4 years 4 months). A retrospective review of all cases was performed to identify success rate and factors affecting it. Successful reduction was achieved in 46 cases (74%). One case was complicated by perforation and four cases (7%) by early recurrence. Patients with failed pneumatic reduction were more likely than those with successful reduction to have: (1) long duration of symptoms; (2) bleeding per rectum; (3) small bowel obstruction. Among the 16 cases of failed reduction, surgical findings were: five cases of ileo-ileo-colic intussusception, one with ileo-ileal, one with perforated ischaemic colon during air enema and one whose intussusception was found to be reduced at surgery. Three patients had lead points: Meckel's diverticula in two and a pinworm in one. Resection was required in three cases for non-viable bowel and in another two for the Meckel's diverticula. Pneumatic reduction of intussusception offers a high success rate with few complications. Performing an air enema earlier in the course of the disease may increase the chance of successful reduction.

Child, Preschool

Glucagon in experimental intussusception.

A standard type of ileocolic intussusception was produced in 69 puppies and the effect of glucagon on the hydrostatic reduction of the intussusceptions evaluated in a prospective, double-blind study. The reductions were attempted at intervals varying from 18 to 60 hr following the production of the intussusceptions. The overall reduction rate was 70% and there was no statistical difference in this rate between the animals receiving glucagon and those receiving placebos. None of the gangrenous intussusceptions were reducible with the hydrostatic pressure technique, irrespective of whether glucagon was used or not. A further evaluation was made of those animals in whom successful reductions were accomplished by the hydrostatic pressure method. Glucagon did result in significantly easier reductions, and an earlier return of normal vascular supply as measured by color and by arterial pulsations as compared to the control group.

Animals

Intussusception complicated by bowel perforation during hydrostatic reduction.

Most perforations of the bowel during attempt at hydrostatic reduction of intussusception occur in an area of localised infarction in the normal transverse or left colon. An animal model of intussusception was used to find indications for the cause of this phenomenon. We submitted the intussuscipiens of 10 strangulated intussusceptions in 6 dogs to a histological examination. In 6 of 10 intussusceptions we found ischaemic changes in the mucosa of the intussuscipiens. In 3 cases these lesions were multiple. All lesions were found in locations where there was a close contact between the intussusceptum and the intussuscipiens. We did not find signs of impaired circulation of the whole intussuscipiens. We conclude that our findings give an indication that perforation of the intussuscipiens during attempt at hydrostatic reduction occurs through areas of localised ischaemic infarction on the basis of direct pressure by the intussusceptum.

Animals

Idiopathic postoperative intussusception.

During the last 11 years idiopathic postoperative intussusception developed in ten children. The incidence was 5.5% of all the intussusceptions. The age ranged from three months to ten years and the interval between two surgical procedures differed from three to eight days. Only one of the patients presented the classical signs of intussusception. In nine of them, the obstructions were in the small bowel. Nine of the ten intussusceptions needed simple manual reduction. Postoperative recovery was uneventful.

Child

Intussusception in a premature infant simulating necrotising enterocolitis.

Intussusception in older infants is manifested by bloody stools, colicky abdominal pain and a palpable abdominal mass. In neonates the symptoms are often restricted to vomiting, guaiac positive stools and abdominal distension. These symptoms closely mimic necrotising enterocolitis. Surgical treatment of necrotising enterocolitis should be postponed until perforation of the gastrointestinal tract has occurred, whereas, prompt surgical treatment is recommended for intussusception. We report a case of intussusception that simulated necrotising enterocolitis in a 740 grammes premature infant in the second week of life. The clinical and radiographic features are described and the difficulty in distinction between the two conditions is emphasised. Neonatologists and paediatric surgeons should always include intussusception in the differential diagnosis of abdominal distension and guaiac positive stools in small premature infants.

Diagnosis, Differential

Intussusception in the Syrian golden hamster.

Of a series of ninety-six young male Syrian Golden hamsters, 13% developed lethargy, anorexia, diarrhoea and colocolic intussusception when their diet was changed from a basal laboratory-grade rodent chow to a nutritionally complete semi-purified diet. Histologically, the colon of the hamsters with intussusception had markedly reduced mucus production. Plasma levels of gastric inhibitory polypeptide (GIP) were reduced 80% (P less than 0.01) but peptide tyrosine/tyrosine and enteroglucagon in plasma were increased 290 and 526% respectively in hamsters with intussusception. Variations in dietary fatty acid composition had no effect but intussusception was not observed after changing the dietary carbohydrate from sucrose to starch.

Animals

Intussusception. A case that suggests a new cardinal symptom--lethargy.

Intussusception is an uncommon condition, but it is the most frequent cause of bowel obstruction in infants and children aged 3 months to 5 years. If undiagnosed, it can result in bowel necrosis, perforation, and even death. Four cardinal signs and symptoms (abdominal pain, rectal bleeding, vomiting, and abdominal mass) are described in patients with intussusception, but these manifestations are not always present and their absence may lead to misdiagnosis. Lethargy might be considered a fifth cardinal symptom. As demonstrated in this case, lethargy may be a significant presenting feature in an infant with no history of abdominal pain, and in association with the other cardinal symptoms, it may be an early indication of a significant illness such as intussusception. Awareness of this association may result in an earlier diagnosis and an improved outcome in patients with intussusception.

Female

Tropical paediatric intussusception--is it a different disease entity?

The presentation of intussusception in children in Zaria, Nigeria has been studied with the aim of identifying any features that may differentiate it from that which obtains in temperate countries. Our data reveal no difference in age of peak incidence, sex ratio, absence of preceding upper respiratory infection or lack of significant seasonal variation. However, there is an unusually high incidence (41%) of caecocolic intussusception. It is believed that this may account for other observed features, such as the low occurrence of constipation and other evidence of intestinal obstruction, and the relatively high incidence of "painless" intussusception and sub-acute or chronic intussusception. Twenty-nine per cent of the patients had only one or two of the usual diagnostic features of the disease and this contributed to delayed diagnosis. In all but two patients the condition was idiopathic and there was no evidence to implicate bacterial enteritis or parasitic infestation in the aetiology of the disease.

Adolescent

Intussusception in infants and older children: a comparison.

The clinical features and operative findings in 37 infants and 29 older children with intussusception seen over a 10-year period were compared and contrasted. While most of the children presented acutely, 28% of older children had chronic intussusception compared with 5% in infants. Only about a third of all children had the four classical features of abdominal pain, vomiting, abdominal mass and bloody stool; the rest had two or three of the above features. Pain and palpable abdominal mass were more common features in older children while abdominal distension, constipation and diarrhoea were more prominent in infants. Fifty-four per cent of intussusceptions in infants were entero-colic while in older children 69% were colonic. All the intussusceptions in infants were idiopathic while in 14% of older children there were predisposing causes. Resection for gangrene/perforation was required in 30% of infants compared with 7% of older children.

Adolescent

Duodenojejunal intussusception secondary to hamartomatous polyp of Brunner's glands.

A case of duodenojejunal intussusception secondary to a large hamartomatous polyp of Brunner's glands was reported in a 15-year-old girl. Despite a great preponderance of ileocolic intussusception in childhood, this is the first reported case of duodenojejunal intussusception occurring in that age group. The diagnosis was not made by clinical examination; complete duodenal obstruction was shown in upper gastrointestinal series and by endoscopy. The intussusception was reduced manually at laparotomy, and the polyp was excised. Pathological examination revealed a preponderance of normal-appearing Brunner's glands in the tumor, consistent with the diagnosis of Brunner's gland hamartoma.

Adolescent

The role of abdominal x-rays in the diagnosis and management of intussusception.

The management of intussusception requires early diagnosis and reduction with either barium enema or surgical intervention. Supine and erect abdominal radiographs are often obtained prior to ordering a barium enema. In many pediatric centers, the critical, initial interpretation of these radiographs is made by nonradiologists and, in most instances, by pediatric emergency physicians. We determined the sensitivity and specificity of abdominal radiographs in diagnosing intussusception when interpreted by these physicians. Six full-time pediatric emergency physicians evaluated 126 radiographs from 42 patients with intussusception, 42 in whom the disease was clinically suspected but ruled out, and 42 in whom the final radiology report was "normal." These were presented to pediatric emergency physicians in a blinded, randomized sequence without any additional clinical information. These physicians then identified patients for whom they would proceed to barium enema. The mean sensitivity was 80.5% (range, 71-93%), and the mean specificity was 58% (range, 48-69%). This compares favorably to the sensitivity of signs and symptoms, and we conclude that plain and upright abdominal films are a useful adjunct for the clinician evaluating patients for suspected intussusception.

Barium Sulfate