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hard chancre

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chancre /chan·cre/ (shang´ker) [Fr.]
1. the primary sore of syphilis, occurring at the site of entry of the infection.
2. the primary cutaneous lesion of such diseases as sporotrichosis and tuberculosis.

hard chancre , hunterian chancre chancre (1).
chancre re´dux  chancre developing on the scar of a healed primary chancre.
soft chancre  chancroid.
true chancre  chancre (1).
tuberculous chancre  a brownish red papule which develops into an indurated nodule or plaque, representing the initial cutaneous infection of the tubercle bacillus into the skin or mucosa.

hard chancre (härd)
n.
See chancre.

hard chancre
Etymology: AS, heard + Fr, canker
a syphilitic chancre or primary lesion that develops at the site of a syphilis infection. The lesion begins as a small red papule that gradually hardens and erodes into an extremely contagious, although painless, ulcer. A secretion exuded by the sore contains Treponema pallidum, the organism that is the causative agent of syphilis in humans.


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