Source:http://linkedlifedata.com/resource/umls/id/C0032357
MSH: A syndrome which is characterized by symbrachydactyly and aplasia of the sternal head of pectoralis major.,NCI: A rare developmental disorder characterized by underdevelopment or absence of the pectoralis muscle in one side of the chest, usually associated with ipsilateral cutaneous syndactyly, and ipsilateral breast and nipple hypoplasia.