Objective: To study the diagnostic, etiological, therapeutic and evolutionary aspects of patients received at the Sylvanus Olympio Hospital in Lomé for venous priapism. Patients and Methods: A cross sectional study, over 5 years (2012-2016), of 27 cases of low flow priapism treated at the Chu Sylvanus Olympio in Lomé. Results: The mean age of the patients was 28.14 years ± 8.6. The average time of consultation was 106 hours (04 days 10 hours) ± 208.02. In our study, 4 (14.81%) patients consulted before the 6th hour and 20 (74%) patients consulted after the 24th hour. The blood count required in all patients revealed a case of chronic myeloid leukemia. Hemoglobin electrophoresis resulted in 23 (85.1%) cases of sickle cell disease. The management was medico-surgical. After an average follow-up of 11 months, erectile function was evaluated in 18 patients, and erectile dysfunction was noted in 10 (55.5%) patients.