Throckmorton sign – when the penis points in the direction of…

Throckmorton sign – when the penis points in the direction of unilateral disease on a pelvic radiograph. Also known as the John Thomas sign, when present it is very important for radiologists to report it so as to improve overall morale amongst medical staff. A variant of this sign is the Mark Morton sign when the penis is unusually small (poor Mark). Neck of femur fracture is one on the most common pathologies indicated by the Throckmorton sign, however many rarer entities have been found including the above example of a femoral enchondroma in a patient with Muffucci syndrome.

from our tumblr blog

http://radiologysigns.tumblr.com/

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