3 research outputs found

    A colo-colic intussusception caused by a submucosal lipoma in a child with morm infestation of the intestinal tract – a case report

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    The aim of this case report is to remind clinicians and general radiologists that intussusception in older children are commonly caused by a lead point. One of the most common lead point in this instance is bowel lipoma. Intussusception without lead point most commonly occurs in infant between 4 to 10 months of age. Typically, the clinical presentation is often non-specific abdominal pain with blood mix with the stool classically described as redcurrant jelly. We are illustrating a case of an 11-year-old girl who presented to the Emergency Department with a 3-day history of colicky abdominal pain and per rectal bleed. Abdominal ultrasound examination detected an intussusception on the left side of the abdomen associated with an adjacent well defined hyperechoic mass within the bowel lumen. In addition, worms were also present within the bowel. A successful contrast reduction of the intussusception was performed but a persistent well defined filling defect within the distal transverse colon was observed. Colonoscopy revealed a mass proximal to the splenic flexure almost completely obstructing the colonic lumen. A worm bolus was also seen near the ileo-caecal junction. A limited distal transverse colectomy was performed and histology examination confirmed the colonic mass to be a submucosal lipoma

    Low‐temperature tolerance in coprophagic beetle species (Coleoptera: Scarabaeidae): implications for ecological services

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    1. Low temperatures affect insect functioning and population dynamics. Although temperate species cope with low temperatures better than their tropical counterparts, increasing temperature variability due to climate change exposes tropical species to frequent cold stress. For keystone insect species providing important ecosystem services, low-temperature tolerances, and behavioural responses remain unknown, hampering predictions under climate change. 2. The present study examined low-temperature physiology [critical thermal minima (CTmin) and chill coma recovery time (CCRT)] of six dung beetle species across three activity times: diurnal Allogymnopleurus indigaceous (Reiche) and Euoniticellus intermedius (Reiche); crepuscular Onthophagus alexis (Klug) and Onthophagus gazella (Fabricius), and; nocturnal Copris elephenor (Klug) and Scarabaeus zambezianus (Peringuey). Further, ecological service delivery (dung removal) was examined between diurnal and nocturnal species across the temperature regimes. 3. Nocturnal species had significantly greater cold tolerance than both crepuscular and diurnal species, while CCRT was significantly shortest in diurnal than both crepuscular and nocturnal species. Dung ball production between diurnal and nocturnal species interacted with temperature, with diurnal species producing significantly fewer balls at low temperatures, while nocturnal beetles were not significantly affected. In turn, nocturnal species produced significantly larger balls than the diurnal species across temperatures. Effects of temperature regime shifts were intertwined with the foraging ecology of individual species. 4. Future research should quantify species' functional responses toward different amounts of dung masses as stressful temperatures increase. 5. Results are significant for determination of species thermal ranges and predicting costs of low-temperature stress through reduced ecological services under shifting thermal environments
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