ECTOMORPHIC HABITUS, SEVERE MENTAL-RETARDATION, AND CHARACTERISTIC FACE - A NEW MCA MR SYNDROME/

Here we report on 2 mentally retarded sisters with clinical signs and symptoms not seen in a previously delineated MCA/MR syndrome, i.e., no rmal pre- and perinatal history, severe mental retardation with severe delay in psychomotor development and without development of primary m otor abilities and speech, characteristic face with maxillary hypoplas ia, large mouth with downturned corners, short philtrum and everted lo wer lip, associated with a remarkable ectomorphic habitus.