Re: lower extremity MULTIPLE CARTILAGINOUS EXOSTOSIS Synonym: Hereditary multiple exostosis, diaphyseal aclasis, multiple osteochondromatosis It is a hereditary disease with autosomal dominant transmission. It is characterized by multiple osteocartilaginous tumors at the metaphysis of long and short tubular bones and at the sites of enchondral growth in the flat bones. Most frequent site is distal femur, proximal femur and distal forearm in that sequence. The bony projections take origin from the ends of the shaft near the cartilage-shaft junctions. Their longitudinal axes are almost invariably directed away from the nearest joint. The epiphyseal ossification centers are normal. Exostosis can occurs at any time from birth to the end of the growth period. ref - spotters in pediatrics Note - Ollier's disease and Maffucci syndrome has multiple enchondromas
