GUS secondary to primary syphilis often presents as a single ulcer or chancre, which characteristically appears round, firm, painless, has indurated borders and a clean base and ispossibly accompanied by lymphadenopathy.
En el caso de la sífilis primaria se puede presentar una úlcera única en forma de chancro redondo, firme e indoloro, de bordes indurados y fondo limpio, acompañada o no de linfadenopatía.