“…In the present study, ultrastructural and histochemical observations were conducted for vascular change in Marfan's syndrome, particularly for the structure of media smooth muscle cells, elastic fibers, collagen fibers and ground substances (AMPS, etc), in comparison with that of normal aorta, arteriosclerosis, mesoaortitis ~yphilitica and aortitis syndrome (TAKAYASU'S disease). Case 1. Female, age 15, with clinical findings of arachnodactyly, pigeon breast, ectopia lentis, aortic regurgitation and great stature (175 cm) and with autopsy findings of diffuse and dissecting aneurysm in the ascending aorta and marked hypertrophy and dilatation of the left ventricle (550 gm).…”