Obstetric and Gynecologic Ultrasound
The application of contrast-enhanced ultrasound in the diagnosis of residual placenta
Wen Xiong, Hong Luo, Qin Chen, Ying Wu, Hao Wu
Published 2016-08-01
Cite as Chin J Med Ultrasound(Electronic Edition), 2016, 13(8): 593-597. DOI: 10.3877/cma.j.issn.1672-6448.2016.08.008
Abstract
ObjectiveTo investigate the diagnostic value of contrast-enhanced ultrasound (CEUS) in residual placenta.
MethodsThe transabdominal conventional ultrasound and CEUS findings of 84 patients with residual placenta that were confirmed by pathological and clinically cured from January 2013 to December 2015 in Sichuan Provincial Peopleʹs Hospital were reviewed before surgery. Based on the pathological findings, the presence of chorionic villus adjacent myometrium was defined as the implanted group (59 cases) and the presence of residual placenta was defined as the non-implanted group (25 cases).
ResultsThe main CEUS features of the non-implanted group were slow flow-in (88.0%, 22/25), hyperenhancement or isoenhancement (76.0%, 19/25), heterogeneous enhancement (84.0%, 21/25), clear boundary between lesions and myometrium (88.0%, 22/25), regular boundary (92.0%, 23/25), the muscle thickness in the lesion area was not decreased when compared with the contralateral normal myometrium (84.0%, 21/25). The main CEUS features of the implanted group were fast flow-in (96.6%, 57/59), hyperenhancement or isoenhancement (88.1%, 52/59), heterogeneousen hancement (93.2%, 55/59), not-clear displayed in boundary (84.7%, 50/59), boundary irregularity (88.1%, 52/59), the muscle thickness in the lesion area decreased when compared with the contralateral normal myometrium (76.3%, 45/59). Compared with the pathological diagnosis, the pathological coincidence rate of ultrasound and CEUS in the diagnosis of residual placenta were 71.4% (60/84), 91.6% (77/84).
ConclusionsCEUS can demonstrate intrauterine residual lesions and the features of it are helpful in differential diagnosingre sidual placenta. To sum up, CEUS can provide more accurate information and application value.
Key words:
Ultrasonography; Contrast media; Placenta retained; Placenta accreta
Contributor Information
Wen Xiong
Department of Ultrasound, Sichuan Academy of Medical Sciences &
Sichuan Provincial People's Hospital, Chengdu 610072, China
Hong Luo
Department of Ultrasound, West China Second University Hospital, Sichuan University, Chengdu 610041, China
Qin Chen
Department of Ultrasound, Sichuan Academy of Medical Sciences &
Sichuan Provincial People's Hospital, Chengdu 610072, China
Ying Wu
Department of Ultrasound, Sichuan Academy of Medical Sciences &
Sichuan Provincial People's Hospital, Chengdu 610072, China
Hao Wu
Department of Ultrasound, Sichuan Academy of Medical Sciences &
Sichuan Provincial People's Hospital, Chengdu 610072, China
