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Query: UMLS:C0042961 (volvulus)
 4,305 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Five cases of volvulus of the transverse colon are presented. Two distinct clinical types are noted and discussed, each with a significantly different mortality. The level of volvulus dictates the limitations of diagnostic aides and appropriate treatment.
Am J Surg 1977 Sep
PMID:Volvulus of the transverse colon. 90 Mar 43

We describe a patient with symptomatic multiple lipomas with volvulus. He complained of gradually increased abdominal pain and distention. Preoperative roentgenograms showed many rounded filling defects of the small intestine. Operation was performed to reduce intestinal obstruction and ileal resection was performed. The dilated ileum was rotated 720 degree clockwise and it contained 115 submucosal and 26 subserosal lipomas. Histologically, the lipomas were benign and consisted of well-developed fat tissue. The patient's postoperative course was satisfactory, and neither residual lipoma nor recurrence were found at barium enema examination two years after operation.
Arch Surg 1977 Sep
PMID:Multiple lipomas of the ileum with volvulus. 90 Nov 89

The effectiveness of a mass separation technique, previously used for the extraction of larvae of lymphatic-dwelling filarial worms from batches of vector mosquitoes, was tested as a means of recovering infective-stage larvae of Onchocerca volvulus from Simulium ochraceum in Guatemala. Blood-engorged flies, collected from 10 infected human attractants, were maintained for 9 days to allow ingested microfilariae to develop to the infective stage. The numbers of Onchocerca larvae recovered after groups of these flies were crushed and washed into tissue culture fluid in Baermann funnels was compared with the numbers obtained by individual dissections of flies fed on the same subjects. The mass separation procedure gave a mean recovery rate of 0.03 larva/fly and detected larvae only in flies which had fed on those subjects with the highest microfilarial skin densities. Dissections yielded 0.50 larva/fly (a 16.7-fold increase) and detected larvae in flies collected from all test subjects. The explanation for the ineffectiveness of the mass separation technique may lie in the observed sluggishness of infective-stage Onchocerca larvae and a consequent inability to free themselves from the fly fragments in the Baermann funnel.
Tropenmed Parasitol 1977 Sep
PMID:A comparison of individual dissection and mass separation for recovery of Onchocerca larvae from vector black flies. 91 Feb 87

Two cases of obstruction of the bypassed small intestine after jejunoileal shunt for obesity are presented. These cases illustrate the possible failure of radiologic visualization of the obstructed bowel since no gas traverses this bowel, as well as two of the possible causes-internal herniation and volvulus. A third cause, intussusception of the blind loop into the colon, has been reported. Obstruction of the bypassed bowel demands surgical intervention and could lead to perforation and peritonitis if untreated. Its prevention involves the closure of all mesenteric defects at the original operation. Surgeons should be aware of the possibility of these conditions in any patient who has had a small-bowel bypass operation.
Arch Surg 1976 Sep
PMID:The excluded small-bowel segment. A source of complications after small-bowel bypass. 94 55

A ten-year study of volvulus of the sigmoid colon is presented. Although the results of treatment of volvulus of the sigmoid colon are generally improving, the challenge for further improvement remains.
Dis Colon Rectum 1976 Sep
PMID:Volvulus of the sigmoid colon: a ten-year study. 96 12

Six marking-recapture experiments were carried out with Simulium damnosum in the Cameroon Republic, five in the rain-forest and one in the Sudan-savanna zone. Adult flies were marked by applying a small spot of oil paint to the mesonotum while they were engorging with blood on the legs of volunteers infected with Onchocerca volvulus microfilariae. Catches of wild flies were carried out for 12-13 days after the first day of marking, and all marked flies recaptured were examined. Some of the flies recaptured on days 0, 1 and 2 were nulliparous and had probably been disturbed by the application of the paint before they had completed their blood-meal. The frequency distribution of recaptured marked parous flies returning for their "second" blood-meal rose to a peak early on day 4, but more flies returned earlier,three days after taking a blood-meal, than later on day 5. After day 5, the numbers of recaptured flies were too low to demonstrate any peaks corresponding to "third" and later blood-meals. The longest surviving fly was recaptured 10 days after marking. Twenty-six percent of the flies recaptured on days 3 and 4 contained developing O. volvulus larvae three-five days old, which had presumably been ingested as microfilariae during the blood-meal taken on day 0. Infective larvae first appeared in flies returning late on day 6, and the highest percentage of infective flies occurred on day 7. Infective larvae were found in recaptured flies until day 10, the last day on which marked flies were recovered. Of 929 flies marked on the Sudan-savanna experiment, three (0-32%) flies were recaptured. Two returned on day 4 and one on day 6.
Ann Trop Med Parasitol 1976 Sep
PMID:The intervals between the blood-meals of man-biting Simulium damnosum (Diptera: Simuliidae). 97 Oct 2

Five marking/recapture experiments were carried out on Simulium damnosum in the rain-forest of the United Republic of Cameroon, in order to determine the regression in biting density at increasing distances from the marking point. Flies were captured unfed, marked with fluorescent dust, and then released on the bank of a large river. Recaptures were made over the six-seven days after marking, at seven stations situated from 200 m to 79 km along a large river, from the marking site. Marked flies, which showed fluorescent pigment when examined under an ultraviolet lamp, were recovered at all seven sites. The ratios of the number of recaptures per man-hour at each distant site to the recaptures per man-hour at the marking point were calculated to obtain values for the proportional biting density (Z). The value of Z declined in a logarithmic manner with increasing distance from the marking site, such that it fell to 0-1 at distances of 34-1 km on a large river, 5-5 km on a small river, and 1-5 km on a road leading away from a large river. The peak number of flies recaptured at the farthest sites along a large river (56 km and 79 km) occurred one day later than at the station nearest the marking point. The dispersal of marked flies which had fed on volunteers carrying Onchocerca volvulus microfilariae, was studied along a large river. Of three flies recaptured 24 km upstream from the marking point, one contained 10 infective larvae of O. volvulus.
Ann Trop Med Parasitol 1976 Sep
PMID:Studies on the flight range and dispersal of Simulium damnosum (Diptera: Simuliidae) in the rain-forest of Cameroon. 97 Oct 3

Intramural gas collection in a bowel segment is an important roentgenological sign, consistent with necrosis of the bowel wall. This is demonstrated by an example of jejunal volvulus and an inflammatory conglomeration of intestine. The diagnostic interpretation must be completed by the clinical picture and other signs of intestinal ischemia.
Radiologe 1975 Sep
PMID:[Intramural gas collection in the small bowel (author's transl)]. 118 92

Preliminary enzyme-linked immunosorbent assay (ELISA) with serum from a patient with onchoceriasis revealed extensive cross-reactions with various nematode antigens. Further tests on a batch of sera from people with proven O. volvulus infections using O. gutturosa antigen, showed that almost all the sera gave higher ELISA values than did control African sera.
Tropenmed Parasitol 1975 Sep
PMID:Preliminary studies on the application of enzyme immunoassay in the detection of antibodies in onchocerciasis. 118 31

This paper presents a four-year-old Nigerian male child who developed volvulus of the small intestine three years after the successful establishment of ventriculo-peritoneal shunt for his hydrocephalus. There is only one other report in the literature of this complication. In view of the increasing use of ventriculo-peritoneal CSF diversion for hydrocephalus, it is necessary to be aware of the rare and unusual cause of an acute abdomen.
Ghana Med J 1975 Sep
PMID:Occurrence of volvulus with intestinal obstruction after ventriculo-peritoneal CSF diversion: a case report. 123 92


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