Throckmorton sign (also known as John Thomas sign) refers to when the penis points in the direction of unilateral disease, typically of the pelvis or hip.
Throckmorton's sign is a slang term used jokingly by medical students and residents.
A variant of this sign when the penis is unusually small is the Mark Morton sign, apparently a commonly used term in the radiology world of Hampton Roads, Virginia, but quickly spreading to the rest of the United States [reference needed].
- Tom Bentley Throckmorton (1885 - 1961) American neurologist and governor of Iowa 2.
Synonyms & Alternative Spellings
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