Diagnóstico y manejo de la pielectasia fetal
SUMMARY Fetal pyelectasis is a mild dilatation of the renal pelvis, with or without dilatation of the renal chalices. Pyelectasis is detected in 2.9% of evaluated fetus (range: 2-7%). A measurement of more than 4 mm before 33 weeks gestation or more than 7 mm after 33 weeks in the anterior-posterior diameter of the fetal renal pelvis is used as the threshold diagnostic value. Pyelectasis are classified according to the degree of dilatation in minimal (<10 mm), mild (11-15 mm) and severe (>15 mm). Prenatal management is expectant. Postnatal evaluation is aimed to demonstrate the dilatation, to precise the etiology and to discard obstruction.
Published in 2004.