Criterios diagnósticos imagenológicos del espectro de placenta acreta

Abstract

Introduction: The spectrum of placenta accreta (PAS), formerly known as morbidly adherent placenta, refers to the range of pathological adherence of the placenta, including placenta accreta, placenta increta, and placenta percreta. Objective: to describe the imaging diagnostic criteria for the placenta accreta spectrum through the analysis and compilation of information from scientific articles or updated clinical practice guidelines. Development: the ultrasound criteria for the diagnosis of placenta accreta spectrum are: loss or thinning of the hypoechoic retroplacental myometrial zone, numerous vascular or placental lacunae, hypervascularity of the bladder and/or uterine serosa. The diagnostic criteria for MRI are: placental lump, heterogeneous signal intensity, hypointense bands on T2 sequence, decreased myometrial thickness, loss of myometrial line and focal exophytic mass. Conclusion: based on the information collected, it is established that ultrasound is more useful than MRI, due to its low economic cost and easy access, but taking into account that ultrasound must be performed by an experienced professional, because it is subject to to the expertise of the sonographer and the equipment to be used