Paciente masculino de 91 anos de edad, exfumador y con antecedente patologico de Carcinoma Escamocelular en el parpado izquierdo; con cuadro clinico de 10 episodios de vomito y diarrea acuosa en multiples oportunidades. Datos positivos al examen fisico: deshidratacion grado II. Segun los resultados de los estudios paraclinicos se diagnostica Insuficiencia Renal Aguda. Por estos motivos se decide su ingreso y en los estudios realizados durante el mismo se observa elevacion progresiva de los azoados, gasto urinario y desequilibrio hidrelectrolitico. Diagnosticandose diabetes insipida nefrogenica. ABSTRACT Male patient, 91-year-old ex-smoker with past history of Squamous Cell Carcinoma in the left eyelid; with clinical symptoms of 10 episodes of vomiting and watery diarrhea in multiple times. Positive data on physical examination: dehydration grade II. According to the results of paraclinical studies Acute renal failure was diagnosed. For these reasons admission is decided and laboratory tests showed: progressive increase of nitrogenous, urine output and water-electrolyte imbalance was observed. Nephrogenic diabetes insipidus was diagnosed.