A case report of a Down Syndrome associated with Thumb Duplication

Some major orthopedics characteristics and abnormalities of Down syndrome (DS) include hypotonia and limbs abnormalities including the short and wide hands with shortened metacarpus and digits, hypoplasia of middle phalanx of the fifth finger and simian crease. Case Report: We report an 8 year-old male case of DS associated with thumb duplication in presented to our Pediatrics Clinic. He was referred to our clinic for enuresis and encopresis and with left thumb duplication. To our knowledge, this is the first case of DS to be reported from Iran associated with thumb duplication.