Rosenstein's sign

Rosenstein's sign, also known as Sitkovskiy sign, is a sign of acute appendicitis.^[1]

Rosenstein's sign
Differential diagnosis	acute appendicitis

It is observed when tenderness in the right lower quadrant increases when the patient moves from the supine position to a recumbent posture on the left side.^[2]

Etymology

The sign is named after the almost forgotten Jewish German physician and director of The Jewish Hospital, Berlin, Paul Rosenstein (1875–1964). Sitkovskiy's symptom^[3] is the equivalent symptom.