X-derived marker chromosome in patient with mosaic Turner syndrome and Dandy-Walker syndrome: a case report.

Background: Small supernumerary marker chromosomes can be derived from autosomes and sex chromosomes and can accompany chromosome pathologies, such as Turner syndrome.

Case Presentation: Here, we present a case report of a patient with mosaic Turner syndrome and Dandy-Walker syndrome carrying a marker chromosome. We showed the presence of the marker chromosome in 33.