[Treating severe endometriosis by pregnancy: a risky business]

We report the case of a young woman presenting with painful deep and rectal endometriosis. This condition had started long ago while the diagnosis had been delayed. Brutal colon occlusion followed the discontinuation of oral contraception. Left colectomy with terminal colostomy was carried out in emergency. The conservative surgical management of deep endometriosis was performed three months later. In women presenting deep endometriosis, the discontinuation of hormonal treatment in order to attempt a spontaneous pregnancy should not be recommended before undertaking a thorough endometriosis and fertility status investigation.