Uterine choriocarcinoma is a trophoblastic tumor characterized by its high metastatic potential. It most often results from the degeneration of a hydatidiform mole. Renal and pulmonary metastases can rarely reveal this pathology. Our objective is to report a new observation in a young nulliparous woman aged 27 with a history of spontaneous miscarriage 6 months ago and minimal menometrorrhagia for 2 months. She was admitted urgently to a private hospital center for intense lumbar pain simulating renal colic. She presents with dyspnea on exertion and omucous skin pallor with severe anemia at 4g/dl of hemoglobin. The paraclinical examinations discovered pulmonary and renal metastases from a gestational choriocarcinoma. The delay in diagnosis associated with a lack of regular clinical, biological and ultrasound follow-up of a spontaneous miscarriage can jeopardize the vital prognosis of a patient.