{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,10]],"date-time":"2026-05-10T14:16:00Z","timestamp":1778422560295,"version":"3.51.4"},"reference-count":10,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2013,8,21]],"date-time":"2013-08-21T00:00:00Z","timestamp":1377043200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Prenatal Diagnosis"],"published-print":{"date-parts":[[2013,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>This study aimed to compare the angio\u2010architecture of monochorionic placentas of spontaneous twin anaemia\u2013polycythemia sequence (TAPS) with placenta of twin\u2010to\u2010twin transfusion syndrome (TTTS) with residual anastomoses after laser coagulation and placentas of uncomplicated monochorionic twin pregnancies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This case\u2013control study compares the angio\u2010architecture of monochorionic placentas of spontaneous TAPS (<jats:italic>n<\/jats:italic>\u2009=\u200912) with that of monochorionic placentas of TTTS treated by laser coagulation with residual anastomoses (TTTS\u2009+\u2009RA; <jats:italic>n<\/jats:italic>\u2009=\u200920) and placentas of monochorionic pregnancies without complications (<jats:italic>n<\/jats:italic>\u2009=\u200924), matched for gestational age. Placental sharing and angio\u2010architecture were assessed by injection of colored dye.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The median diameter of the arterio\u2010venous (AV) anastomoses in TAPS placentas was 2.26, 0.215 with TTTS\u2009+\u2009RA and 4.17\u2009mm in normal monochorionic pregnancies (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.03). The mean diameter of the arterio\u2010arterial (AA) anastomoses in monochorionic placentas with spontaneous TAPS was 0.2\u2009mm versus 0.15\u2009mm in TTTS\u2009+\u2009RA and 2.0\u2009mm in normal pregnancies, respectively (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.03, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.007). The number of AA anastomoses was lower with TAPS (0.3 versus 0.50 and 1, respectively, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.015, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001). Besides, unequal sharing was more frequent in TAPS as compared with monochorionic normal pregnancies (75% versus 29%, <jats:italic>p<\/jats:italic>\u2009=\u20090.03).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Age matched placentas of spontaneous TAPS are characterized by very small AV anastomoses and very few AA anastomoses of smaller diameter than placentas of monochorionic twins with TTTS or without obvious complications. \u00a9 2013 John Wiley &amp; Sons, Ltd.<\/jats:p><\/jats:sec>","DOI":"10.1002\/pd.4177","type":"journal-article","created":{"date-parts":[[2013,6,7]],"date-time":"2013-06-07T04:10:49Z","timestamp":1370578249000},"page":"979-982","source":"Crossref","is-referenced-by-count":20,"title":["Vascular pattern in monochorionic placentas with spontaneous TAPS and TTTS with residual anastomoses after laser: a case\u2013control study"],"prefix":"10.1002","volume":"33","author":[{"given":"Romain","family":"Favre","sequence":"first","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antoine","family":"Koch","sequence":"additional","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aenn\u2010Sophie","family":"Weingertner","sequence":"additional","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicolas","family":"Sananes","sequence":"additional","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ngoc Tu","family":"Trieu","sequence":"additional","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Monique","family":"Kohler","sequence":"additional","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando","family":"Guerra","sequence":"additional","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Israel","family":"Nisand","sequence":"additional","affiliation":[{"name":"Fetal Medicine CMCO\u2010HUS  19 Rue Louis Pasteur 67300 Schiltigheim\/Strasbourg 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