Abnormal ultrasound appearance of the amniotic membranes – diagnostic and significance: a pictorial essay

Liana Pleș, Romina Marina Sima, Cristina Moisei, Marius Alexandru Moga, Laura Dracea


The obstetrical ultrasound may identify the protrusion of the uterine surface or placental area into the amniotic cavity. The differential diagnosis of this pathology with uterine adhesions, septate uterus, circumvallate placenta, amniotic band or amniotic sheet can be sometimes difficult. The purpose of the pictorial essay is to exemplify the presence of the amniotic sheet and circumvallate placenta in routine obstetrics screening of all trimesters of pregnancy.


amniotic sheet, circumvallate placenta, ultrasound

Full Text:



Mahony BS, Filly RA, Callen PW, Golbus MS. The amniotic band syndrome: antenatal sonographic diagnosis and potential pitfalls. Am J Obstet Gynecol 1985;152:63-68.

Turğal M, Özyüncü Ö, Yazıcıoğlu A, Önderoğlu LS. Integration of three-dimensional ultrasonography in the prenatal diagnosis of amniotic band syndrome: A case report. J Turk Ger Gynecol Assoc 2014;15:56-59.

Moerman P, Fryns JP, Vandenberghe K, Lauweryns JM. Constrictive amniotic bands, amniotic adhesions, and limb- body wall complex: discrete disruption sequences with pathogenetic overlap. Am J Med Genet 1992;42:470-479.

Sato M, Kanenishi K, Ito M, Tanaka H, Takemoto M, Hata T. Antenatal 3-D sonographic features of uterine synechia. J Obstet Gynaecol Res 2013;39:395-398.

Ahmadi F, Siahbazi S, Akhbari F, Eslami B,Vosough A. Hysterosalpingography finding in intra uterine adhesion (Asherman’s Syndrome): a pictorial essay. Int J Fertil Steril 2013;7:155-160 .

Tan KB, Tan TY, Tan JV, Yan YL, Yeo GS. The amniotic sheet: a truly benign condition? Ultrasound Obstet Gynecol 2005;26:639-643 .

Tuuli MG, Shanks A, Bernhard L, Odibo AO, Macones GA, Cahill A. Uterine synechiae and pregnancy complications. Obstet Gynecol 2012;119:810-814.

Nelson LD, Grobman WA. Obstetric morbidity associated with amniotic sheets. Ultrasound Obstet Gynecol 2010;36:324-327.

Ozkavukcu E, Haliloğlu N. Gray-scale and color Doppler US findings of amniotic sheets. Diagn Interv Radiol 2012;18:298-302.

Özge K, Canan YT, Mert Y, et al. Amniotic sheet and amniotic band syndrome: pitfalls in distinguishing two cases. Perinat J 2014;22:53-56.

Sistrom CL, Ferguson JE. Abnormal membranes in obstetrical ultrasound: incidence and significance of amniotic sheets and circumvallate placenta. Ultrasound Obstet Gynecol 1993;3:249-255.

Torpin R, Faulkner A. Intrauterine amputation with the missing member found in the fetal membranes. JAMA 1966;198:185-187.

Proffitt E, Phillips M, DeMauro C, Conde K, Powell J. Ultrasonographic diagnosis of intrauterine fetal decapitation secondary to amniotic band sequence: a case report. J Emerg Med 2016;50:e129-e131.

Suzuki S. Clinical significance of pregnancies with circumvallate placenta. J Obstet Gynaecol Res 2008;34:51–54.

Arlicot C, Herve P, Simon E, Perrotin F. Three-dimensional surface rendering of the chorionic placental plate: the ‘‘tire’’ sign for the diagnosis of a circumvallate placenta. J Ultrasound Med 2012;31:340-341.

Hata T, Fujiwara T, Ishibashi M, Kuwamura E, Tenkumo C, Ishihara G. Antenatal three-dimensional sonographic features of placental shelf. J Med Ultrason 2012;39:43- 44.

AboEllail MA, Kanenishi K, Mori N, Kurobe A, Hata T. HDlive imaging of circumvallate placenta. Ultrasound Obstet Gynecol 2015;46:513-514.

Bowman S, Kennedy AM. Sonographic appearance of the placenta. Curr Prob Diagn Radiol 2014;43:356-373.

Shen O, Golomb E, Lavie O, Goldberg Y, Eitan R, Rabinowitz RR. Placental shelf – a common, typically transient and benign finding on early second-trimester sonography. Ultrasound Obstet Gynecol 2007;29:192-194.

Anyikam AL, Hull AD, Benke S, Trivedi N, LaCoursiere DY, Pretorius DH. Prenatal diagnosis of circumvallate placenta and pregnancy outcomes. Obstet Gynecol 2014;123 Suppl 1:98S.

Gün İ, Muhçu M, Müngen E, Kiliç S, Atay V. Effect of an amniotic sheet on pregnancy outcomes. J Ultrasound Med 2013;32:807-813.

DOI: http://dx.doi.org/10.11152/mu-844


  • There are currently no refbacks.