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October 21, 1939, Vol 113, No. 17 >
Other Articles | October 21, 1939

WOOD TICK SIMULATING PEDUNCULATED TUMOR

Kurt Wiener, M.D.
JAMA. 1939;113(17):1564. doi:10.1001/jama.1939.72800420004008b.
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ABSTRACT

Ormsby writes that the female of the wood tick (Ixodes) after sucking blood from the skin swells to the size of a pea or a small bean and may be mistaken for a small pedunculated tumor. How true this is may be illustrated by the case reported here.

An elderly man who has a number of partly pedunculated and pigmented senile keratomas and fibromas on his chest (fig. 1) complained that one of them started to burn and itch. At first glance the little tumor did not look especially different from the others. When viewed more closely (fig. 2) the coffee bean size tumor was found to have eight legs and proved to be a wood tick (Ixodes) which the patient had picked up in the woods of Northern Wisconsin two weeks previously. The tick, apparently aware of the high value of good mimicry and well acquainted with Ormsby's textbook,

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