RESUMEN
INTRODUCTION: Low back pain is a common cause of medical consultation during pregnancy and usually supposes a non-malignant prognostic. PRESENTATION OF CASES: We report two cases of pregnant women whom suffered cauda equina syndrome during pregnancy and underwent emergency surgery after the birth of their babies. DISCUSSION: MRI is the main diagnosis method for cauda equina even during pregnancy. Modern obstetric practice asks surgeons to perform surgery under safe conditions at all gestation stages. Surgical decompression reports better prognosis when practiced within the first 48â¯h after the onset of saddle hypoesthesia. CONCLUSION: When CES is suspected, after MRI study, emergency surgery is the only solution to improve the condition of these patients.