[Primary syphilitic proctitis associated with liver involvement (author's transl)].

A primary syphilitic proctitis histologically simulating a Crohn's disease, has been found in a 34 year-old-man, who is married and father of three children. He presents also a biological and histological liver involvement. He completely recovered wih antibiotics. Review of the literature is done. Syphilitic serology studies and treponems research in rectal discharges should be done in case of anorectal lesions, histologically benign, but of uncertain etiology, if the patients is known as homosexual or not.