Preeclampsia is public health problema, one of the most serious complications and one of the obstetric medical problems, whose management is controversial; it negatively afecte pregnancy and is associated with high maternal and neonatal morbidity, so it is necesary to unify management creiteria. The main mechanisms described are the aberrant invasión of progenitor cells in uterine vessels, immune intolerance between fetal tissues, por maternal status related to changes in the inflammatory and cardiovascular events of normal pregnancy, and the effects have also been described genetically. During prenatal visits, blood pressure should be checked at all visits, because most women are initially asymptomatic. We present the case of a 17 years old patient, referresd from the first level with a clinical picture of 24 hours of evolution characterized by pain in the hypogastrium of colic type of mild to moderate intensity, with loss of the mucous plug and positive proteinuria (+). Laboratory tests and ultrasound that is given as a diagnosis of preeclampsia without alarm signs in latent labor.Preeclampsia is public health problema, one of the most serious complications and one of the obstetric medical problems, whose management is controversial; it negatively afecte pregnancy and is associated with high maternal and neonatal morbidity, so it is necesary to unify management creiteria. The main mechanisms described are the aberrant invasión of progenitor cells in uterine vessels, immune intolerance between fetal tissues, por maternal status related to changes in the inflammatory and cardiovascular events of normal pregnancy, and the effects have also been described genetically. During prenatal visits, blood pressure should be checked at all visits, because most women are initially asymptomatic. We present the case of a 17 years old patient, referresd from the first level with a clinical picture of 24 hours of evolution characterized by pain in the hypogastrium of colic type of mild to moderate intensity, with loss of the mucous plug and positive proteinuria (+). Laboratory tests and ultrasound that is given as a diagnosis of preeclampsia without alarm signs in latent labor.La preeclampsia es un problema de salud pública, una de las complicaciones más graves y uno de los problemas médicos obstétricos, cuyo manejo es controvertido; afecta negativamente al embarazo y se asocia a una alta morbimortalidad materna y neonatal, por lo que es necesario unificar criterios de manejo. Los principales mecanismos descritos son la invasión aberrante de celular progenitoras en los vasos uterinos, la intolerancia inmunitaria entre los tejidos fetales, el mal estado materno relacionado con cambios en los eventos inflamatorios y cardiovasculares del embarazo normal, y los efectos también se han descritos genéticamente. Durante las visitas prenatales, se debe controlar la presión arterial en todas las visitas, porque la mayoría de las mujeres son inicialmente asintomáticas. Se presenta el caso de una paciente de 17 años, referida del primer nivel con cuadro clínico de 24 horas de evolución caracterizado por dolor en hipogastrio tipo cólico de leve a moderada intensidad, con pérdida de tapón mucoso y proteinuria positiva (+), se solicita exámenes de laboratorio y ecografía que se da como diagnostico preeclampsia sin signos de alarma en trabajo de parto fase latente.