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Abstract #3898

MRI Features of Placenta Percreta: Evaluation of the Features for 46 Patients Using Surgical and Histopathological Correlations

Xin Chen1, Guangbin Wang2, Shanshan Wang2, Tao Gong1, Sai Shao2, and Tianyi Qian3

1Shandong University, Jinan, China, People's Republic of, 2Shangdong Medical Imaging Research Institute, Jinan, China, People's Republic of, 3MR Collaborations NE Asia, Siemens Healthcare, Beijing, China, People's Republic of

The objective of the study was to identify valuable features to distinguish placenta percreta from placenta accreta and increta by retrospectively reviewing placenta MRI together with clinical findings for 46 patients diagnosed with invasive placenta. Single-shot turbo spin echo and true fast-imaging with steady-state precession sequence were included in the MR exam protocol. Two experienced radiologists evaluated seven MRI features using surgical and histopathological correlations. The features of bulging placenta including cyrtoid outline, marked placental heterogeneity and signs of placental protrusion are useful to distinguish placenta percreta from placenta accreta and increta. The wall of urinary bladder with nodular protrusion is indicative of urinary bladder involvement.

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