Citation Information :
Hanaoka U, Mori A, Yamamoto K, Tenkumo C, Mori N, Tanaka H. Superb Microvascular Imaging of Retained Placenta with Placenta Accreta Spectrum. Donald School J Ultrasound Obstet Gynecol 2019; 13 (3):85-87.
We present our first experience of using superb microvascular imaging (SMI) with an 18-MHz linear probe to diagnose placenta accreta spectrum (PAS) in the retained placenta after vaginal delivery. In the first case, irregular minimal invasion of the retained placenta into the anterior myometrium and a thin uterine wall were clearly noted. In the second case, SMI clearly demonstrated the loss of myometrium anterior to fundal lesions and abnormally dilated, torturous, stem villous vessels invading until the uterine serosa. SMI with the use of an 18-MHz linear probe may be a novel diagnostic tool for the diagnosis of PAS in the retained placenta after delivery.
Papanikolaou IG, Domail E, et al. Abnormal placentation: current evidence and review of the literature. Eur J Obstet Gyneco Reprod Biol 2018;228:98–105. DOI: 10.1016/j.ejogrb.2018. 06.004.
Buca D, Liberati M, et al. Influence of prenatal diagnosis of abnormally invasive placenta on maternal outcome: a systematic review and meta-analysis. Ultrasound Obstet Gynecol 2018;52(3):304–309. DOI: 10.1002/uog.19070.
Collins SL, Ashcroft A, et al. Proposal for standardized ultrasound descriptors of abnormally invasive placenta (AIP). Ultrasound Obstet Gynecol 2016;47:271–275. DOI: 10.1002/uog.14952.
Jauniaux E, Collins SL, et al. Accreta placentation: a systematic review of prenatal ultrasound imaging and grading of villous invasiveness. Am J Obstet Gynecol 2016;215:712–721. DOI: 10.1016/j.ajog.2016.07.044.
Jauniaux E, Collins SL, et al. Placenta accreta spectrum: patho-physiology and evidence-based anatomy for prenatal ultrasound imaging. Am J Obstet Gynecol 2018;218:75–87. DOI: 10.1016/j.ajog. 2017.05.067.
Wu L, Yen HH, et al. Spoke-wheel sign of focal nodular hyperplasia revealed by superb micro-vascular ultrasound imaging. QJM 2015;108:669–670. DOI: 10.1093/qjmed/hcv016.
Ma Y, Li G, et al. The diagnostic value of superb microvascular imaging (SMI) in detecting blood flow signals of breast lesions. Medicine (Baltimore) 2015;94(36):e1502. DOI: 10.1097/MD.0000000000001502.
Hasegawa J, Suzuki N. SMI for imaging of placental infarction. Placenta 2016;47:96–98. DOI: 10.1016/j.placenta.2016.08.092.
Hasegawa J, Yamada H, et al. Application of superb microvascular imaging (SMI) in obstetrics. J Matern Fetal Neonatal Med 2018;31: 261–263. DOI: 10.1080/14767058.2016.1278206.
Hata T, Kanenishi K, et al. Microvascular imaging of thick placenta with fetal growth restriction. Ultrasound Obstet Gynecol 2018;51:837–839. DOI: 10.1002/uog.18837.
Hasegawa J, Kurasaki A, et al. Sono-histological findings of the placenta accreta spectrum. Ultrasound Obstet Gynecol 2018. DOI: 10.1002/uog.20207.
Bjurstrom J, Collins S, et al. Failed manual removal of the placenta after vaginal delivery. Arch Gynecol Obstet 2018;297:323–332. DOI: 10.1007/s00404-017-4579-2.
Thurn L, Lindqvist PG, et al. Abnormally invasive placenta-prevalence, risk factors and antenatal suspicion: results from a large population-based pregnancy cohort study in the Nordic countries. BJOG 2016;123:1348–1355. DOI: 10.1111/1471-0528.13547.