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Abstract
The aim of this work is to evaluate the role of Doppler US and MRI in the diagnosis of placenta accreta.
Patients and methods
During period between 2012 to 2013, 120 pregnant patients with previous cesarean section were investigated by ultrasound and Doppler and then in suspected cases MRI was obtained (10 cases). The Sonographic and MRI diagnoses were compared with the final pathologic or operative findings or with both.
Results
The mean age of this study group was 29 years ranging from 20 to 40. Among patients with confirmed placenta accreta, the mean age was 32.25 ranging from 25 to 40 years. The mean parity of patients ranged from 1 to 6 with a mean of 1.6. Among patients with placenta accreta, the mean parity ranged from 2 to 6 with a mean of 3.75. The total number of cases with placenta accreta in this study was 4, all of which were previa. This was out of a total of 25 cases of placenta previa. Transabdominal US features were the presence of intraplacental lacunae (sonolucencies), loss of retroplacental clear zone and disruption of bladder–uterine serosa interface with smallest myometrial thickness <1 mm over site of placental implantation by using color Doppler ultrasonography, the most prominent color Doppler feature in this study was the presence of intraplacental lacunar flow. Magnetic resonance imaging accurately predicted placenta accreta in 4 of 4 cases with placenta accreta and correctly ruled out placenta accreta in the rest six cases.
Conclusion
In conclusion, data of the present study show that the use of transabdominal color Doppler ultrasonography complemented by MRI in suspected cases improves the diagnostic accuracy in prediction of placenta accreta in patients with previous cesarean delivery.
Notes
Peer review under responsibility of Alexandria University Faculty of Medicine.
Available online 19 October 2014