File:Chancres On The Penile Shaft Due To A Primary Syphilitic Infection Caused By Treponema Pallidum 6803 Lores.jpg
The primary stage of syphilis is usually marked by the appearance of a single sore called a chancre. The chancre is usually firm, round, small, and painless. It appears at the spot where T. pallidum bacteria entered the body, and lasts 3-6 weeks, healing on its own. Content Providers(s): CDC/M. Rein, VD Creation Date: 1978
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