[Morphologic variants of genital ulcer caused by Haemophilus ducreyi].

The typical clinical picture, common variants and frequent complications of chancroid are presented in cases proven by culture. In general, the conventional view of the clinical spectrum of chancroid is substantiated. Certain types such as "chancre mou volant," however, could not be found in the present material. Their existence or association with Haemophilus ducreyi remains speculative.