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Radiologia Brasileira

On-line version ISSN 1678-7099


AGOSTINI, Thais Coura Figueiredo et al. Placental adhesion disorder: magnetic resonance imaging features and a proposal for a structured report. Radiol Bras [online]. 2020, vol.53, n.5, pp.329-336.  Epub Oct 02, 2020. ISSN 1678-7099.

Placental adhesion disorder encompasses the various types of abnormal placentation that occur when the chorionic villi penetrate the uterine wall. Placenta accreta has become more common, mainly because of the increasing rates of cesarean section. Although ultrasound is the first-line imaging modality for evaluation of the placenta, it plays a limited role in cases of posterior placenta accreta and inconclusive findings. In such cases, magnetic resonance imaging (MRI) is indicated, mainly because it is a more accurate means of identifying placental invasion of extrauterine structures in high-risk pregnant women. In this review article, we present the ten major and minor MRI features of placental adhesion disorder, as described in the international literature. In addition, we propose a template for structured reports of MRI examinations of the placenta. We have also devised a guided questionnaire in order to identify risk factors in patients scheduled to undergo such examinations, with the objective of facilitating the multidisciplinary treatment planning needed in order to minimize maternal morbidity and mortality.

Keywords : Placenta accreta; Placenta previa; Magnetic resonance imaging.

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