Having read Montgomery's recent account1 of 3 cases of fistulas from dead teeth simulating dermal epithelioma, I thought that the following case report might be of interest.
F. M., a white man aged 36, was referred to me on March 20, 1940 because of a small growth at the tip of the chin. The patient stated that all of his teeth had been extracted in 1937 because of severe pyorrhea. About a year later a slightly tender swelling appeared over the point of the chin. This persisted until two weeks before the patient consulted me, when a small "blister" developed; this opened quickly, discharging a sticky mucopurulent material.
On examination, a firm bluish red nodule the size of a small pea was seen in the center of a crater-like depression at the tip of the chin. It was topped by a small sticky crust. Its appearance suggested either a
Shelton JM. FISTULA FROM RETAINED DENTAL ROOT. Arch Derm Syphilol. 1940;42(5):938–939. doi:10.1001/archderm.1940.01490170188020
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