Molecular Cytogenetic Characterization of a Patient Diagnosed with Dimorphic Anemia Carrying De Novo Rare Ring Chromosome 7 along with T(7;9).

A case of a derivative chromosome 7 formed by a ring chromosome 7 and t(7;9) was found who presented with dimorphic anaemia with no other anomaly. Ring chromosome 7 was characterized by conventional and molecular cytogenetic techniques.