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  • Title: Diagnosis of a sigmoid volvulus in pregnancy: ultrasonography and magnetic resonance imaging findings.
    Author: Palmucci S, Lanza ML, Gulino F, Scilletta B, Ettorre GC.
    Journal: J Radiol Case Rep; 2014 Feb; 8(2):54-62. PubMed ID: 24967020.
    Abstract:
    Sigmoid volvulus complicating pregnancy is a rare, non-obstetric cause of abdominal pain that requires prompt surgical intervention (decompression) to avoid intestinal ischemia and perforation. We report the case of a 31-week pregnant woman with abdominal pain and subsequent development of constipation. Preoperative diagnosis was achieved using magnetic resonance imaging and ultrasonography: the large bowel distension and a typical whirl sign - near a sigmoid colon transition point - suggested the diagnosis of sigmoid volvulus. The decision to refer the patient for emergency laparotomy was adopted without any ionizing radiation exposure, and the pre-operative diagnosis was confirmed after surgery. Imaging features of sigmoid volvulus and differential diagnosis from other non-obstetric abdominal emergencies in pregnancy are discussed in our report, with special emphasis on the diagnostic capabilities of ultrasonography and magnetic resonance imaging.
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