@thehospital910: Placental Accreta Spectrum on Ultrasound Features include;- ☑️Loss of the retroplacental clear zone. -The normal hypoechoic layer between the placenta and myometrium is absent or irregular. ☑️Thinning of the myometrium. -Myometrial thickness beneath the placenta is usually <1 mm or may be difficult to identify. ☑️Placental lacunae. ("Swiss cheese" appearance) -Numerous irregular vascular spaces within the placenta. Often large, bizarre, and associated with turbulent blood flow. ☑️Abnormal uterine serosa–bladder interface. -Irregularity or interruption of the bright line separating the uterus from the bladder. ☑️Placental bulge. -The placenta distorts the normal contour of the uterus, causing outward bulging. ☑️Focal exophytic placental tissue. -Placental tissue extends beyond the uterine wall (suggestive of percreta). 🌱Color Doppler features 🔹Turbulent flow within placental lacunae.High-velocity blood flow. 🔹Bridging vessels Vessels extend from the placenta across the myometrium toward the bladder or surrounding tissues. 🔹Subplacental hypervascularity Numerous vessels beneath the placenta. 🔹Uterovesical hypervascularity Increased vascularity between the uterus and bladder ▶️Major risk factors 🔸Previous Cesarean section (risk increases with the number of prior Cesareans). 🔸Placenta previa, especially over a uterine scar. 🔸Previous uterine surgery (e.g., myomectomy). 🔸Advanced maternal age. 🔸Multiparity. 🌱Diagnostic accuracy When performed by experienced operators in high-risk pregnancies, ultrasound has: ▫️Sensitivity: approximately 80–90% ▫️Specificity: approximately 95–98% #sonographer #radiographer #radiology #hospital #sonographystudent
