Category General Surgery
Thomas sign AM Thomas Ogilvie 1955

Thomas sign

Thomas's sign: Silver, aluminium or metallic coloured stools. Caused by the combination of cholestatic (acholic) pale stools secondary to CBD obstruction and the black-tar colour malaena.
John Englebert 'Bert' Dunphy (1908-1981) 680

J. Englebert Dunphy

John Englebert Dunphy (1908-1981). Dunphy sign [*cough test for appendicitis] increased pain, localised to the right lower quadrant.