A 33-year-old male smoker of a packet of cigarettes a day with no other history of interest came to the emergency department for ten days with penile induration at the base of the penis. Examination revealed an indurated longitudinal cord at the base of the penis in a dorsal location, mobile and painful. No inguinal lymphadenopathy was palpable. The patient was afebrile. Penile Doppler ultrasound was performed and showed an induration corresponding to segmental thrombosis of the superficial dorsal vein of the penis. Coagulation study was normal. Diagnostic Judgement: Mondor's disease. The patient received anti-inflammatory treatment. He did not attend the check-up.