obsolete Ehlers-Danlos syndrome with periventricular heterotopia true EDS with periventricular heterotopia Obsolete in Orphanet SCTID:720857006 MONDO:0019348 Orphanet:82004 OMIM:300537 OBSOLETE. Ehlers-Danlos syndrome (EDS) with periventricular heterotopia is a newly described variant of EDS. Affected patients exhibit features consistent with EDS, including joint hypermobility, skin fragility and aortic dilatation. They also have periventricular heterotopia (PH), which is characterized by focal epilepsy usually beginning in the second decade of life. Intelligence is generally normal. Some patients also have cardiac anomalies such as patent ductus arteriosus, bicuspid aortic valves, or aneurismal dilatation of the sinus of Valsalva. periventricular nodular heterotopia