psoas sign


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psoas sign

Radiology The loss of the sharp delineation of the psoas muscle border normally seen on a plain erect abdominal film Significance Intra-abdominal or retroperitoneal pathology–eg, hemorrhage in trauma victims or florid acute inflammation in ruptured appendicitis.

psoas sign

Abdominal pain produced by extension of the hip. The sign indicates a retrocecal or retroperitoneal lesion.
See also: sign
References in periodicals archive ?
Clinical presentation of stump appendicitis is the same as acute appendicitis and may include right lower quadrant pain, nausea, vomiting and anorexia with right lower quadrant tenderness, positive peritoneal signs as Rovsing, Markle, obturator and psoas signs.