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Thread: Whirlpool sign (whirl sign)

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    Default Whirlpool sign (whirl sign)

    is seen when structures twist on itself. It is most commonly described in the abdomen bowel rotates around its mesentery, with mesenteric vessels creating the whirls but is also seen in ovarian torsion.

    Whirlpool sign (whirl sign) attachment.php?attachmentid=215&stc=1&d=1434732956

    Whirlpool sign



    It is seen in a number of settings:

    • malrotation complicated by midgut volvulus
    • caecal volvulus
    • sigmoid volvulus
    • closed loop bowel obstruction
    • enteritis: similar pattern, but in the opposite direction has been described on ultrasound
    • omental torsion


    Whirlpool sign - sigmoid volvulus

    Sigmoid volvulus is the most-common form of volvulus of the gastrointestinal tract and is responsible for 8% of all intestinal obstructions.Sigmoid volvulus is particularly common in elderly persons and constipated patients. Patients experience abdominal pain, distension, and absolute constipation.

    Cecal volvulus is slightly less common than sigmoid volvulus and is associated with symptoms of abdominal pain and small bowel obstruction.











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