{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T00:03:11Z","timestamp":1756425791327,"version":"3.44.0"},"reference-count":19,"publisher":"BMJ","issue":"9","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,9,5]]},"published-print":{"date-parts":[[2023,9]]},"abstract":"<jats:p>This case report presents a patient with a monochorionic twin pregnancy, development of twin\u2013twin transfusion-syndrome (TTTS) and polymicrogyria (PMG) of one fetus. Due to TTTS grade 3, fetoscopic laser ablation was performed at gestational week 16+1. Sonographic follow-up showed a cortical malformation of the right parietal lobe in the former donor, which was identified as PMG by MRI scans. We describe the course of the pregnancy, as well as the clinical, especially neurological, development of the child over 3\u2009years. This case report documents the power of neuroplasticity, leading to comparably good neurological outcome in an extensive, likely acquired cortical malformation. Further, it emphasises the importance of a thorough prenatal imaging characterisation of malformations of cortical development for optimal prenatal counselling of these cases.<\/jats:p>","DOI":"10.1136\/bcr-2023-255510","type":"journal-article","created":{"date-parts":[[2023,9,22]],"date-time":"2023-09-22T11:15:15Z","timestamp":1695381315000},"page":"e255510","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Polymicrogyria in a patient after twin\u2013twin transfusion syndrome"],"prefix":"10.1136","volume":"16","author":[{"given":"Eva","family":"Karner","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-Maternal Medicine, Medical University of Vienna, Wien, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3858-3347","authenticated-orcid":false,"given":"Gregor J","family":"Kasprian","sequence":"additional","affiliation":[{"name":"Department of Radiology, Division of Neuro- and Musculoskeletal Radiology, Medical University of Vienna, Wien, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4628-9052","authenticated-orcid":false,"given":"Alex","family":"Farr","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-Maternal Medicine, Medical University of Vienna, Wien, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elisabeth","family":"Krampl-Bettelheim","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-Maternal Medicine, Medical University of Vienna, Wien, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2023,9,22]]},"reference":[{"key":"2025082801171733000_16.9.e255510.1","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.c.31399"},{"key":"2025082801171733000_16.9.e255510.2","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/j.wneu.2021.12.011","article-title":"Magnetic resonance imaging of malformations of cortical development-A comprehensive review","volume":"159","author":"Khandelwal","year":"2022","journal-title":"World Neurosurg"},{"key":"2025082801171733000_16.9.e255510.3","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1016\/j.pediatrneurol.2020.11.001","article-title":"Excitatory\/inhibitory synaptic ratios in polymicrogyria and down syndrome help explain epileptogenesis in malformations","volume":"116","author":"Sarnat","year":"2021","journal-title":"Pediatr Neurol"},{"key":"2025082801171733000_16.9.e255510.4","doi-asserted-by":"publisher","DOI":"10.1136\/jmg.2004.023952"},{"key":"2025082801171733000_16.9.e255510.5","doi-asserted-by":"publisher","DOI":"10.1007\/s00234-009-0644-2"},{"key":"2025082801171733000_16.9.e255510.6","unstructured":"Veerapaneni P , Veerapaneni KD , Schizencephaly YS . 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