sigmoid volvulus

sig·moid vol·vu·lus

relatively common location of volvulus, with obstruction either proximal or distal to the sigmoid segment.

sigmoid volvulus

a type of colonic volvulus consisting of twisting of an elongated section of sigmoid colon on its mesenteric axis. It is usually seen in the elderly.
References in periodicals archive ?
The "coffee bean" sign is seen on supine plain films of the abdomen in approximately 80% of cases of sigmoid volvulus.
A cecal volvulus can appear very similar to a sigmoid volvulus; however, a cecal volvulus should have only one air-fluid level, whereas a sigmoid volvulus may demonstrate two air-fluid levels.
Surgeons found he was suffering from the condition Sigmoid Volvulus in which the bowel twists on itself, stopping blood reaching the vital organ.
Even though the incidence of traumatic injuries after falls along with cold induced injuries like frostbite (1,2) are common at high altitudes, a review of literature revealed that sigmoid volvulus and megacolon occurred at an increased incidence at 13,000 feet (3,4).
We did not find any case of sigmoid volvulus or megacolon or active medical condition mimicking acute abdomen as has been documented earlier (4,5,7).
The commonest causes of mechanical large-bowel obstruction in adults are diverticular disease, colon carcinoma, faecal impaction and sigmoid volvulus.
The distended cecal loop may be confused with a sigmoid volvulus or even a distended stomach.
Sigmoid volvulus is by far the most common type, accounting for about two thirds of all cases; cecal volvulus accounts for most of the remaining cases.
The variable position of the transverse colon is responsible for the condition being mistaken for a sigmoid volvulus on radiologic examination.
After a brief history and physical, the resident announced he was admitting the patient with a diagnosis of sigmoid volvulus.
Cecal volvulus classically manifests as a kidney-shaped mass in the left upper quadrant or epigastrium (10) and sigmoid volvulus as an inverted "U" arising vertically or obliquely from the pelvis or as three curved lines converging toward the pelvis.