hereditary multiple exostosis

exostosis /ex·os·to·sis/ (ek″sos-to´sis)

1. a benign bony growth projecting outward from a bone surface.

exostosis cartilagi´nea a variety of osteoma consisting of a layer of cartilage developing beneath the periosteum of a bone.

ivory exostosis compact osteoma.

multiple exostoses an inherited condition in which multiple cartilaginous or osteocartilaginous excrescences grow out from the cortical surfaces of long bones.

subungual exostosis a cartilage-capped reactive bone spur occurring on the distal phalanx, usually of the great toe.

ex·os·to·sis (

-st

n. pl. -ses (-s

A projection that is capped by cartilage and arises from a bone that develops from cartilage. Also called hyperostosis, poroma.

exostosis

[ek′sostō′sis]

Etymology: Gk, exo + osteon, bone

an abnormal benign growth on the surface of a bone. Also called hyperostosis. exostosed, exostotic, adj.

exostosis [ek″sos-to´sis] (Gr.)

a benign new growth projecting from a bone surface and characteristically capped by cartilage. adj., adj exostot´ic.

exostosis cartilagi´nea a variety of osteoma consisting of a layer of cartilage developing beneath the periosteum of a bone.

hereditary multiple exostosis a generally benign, hereditary disorder of enchondral growth of bone, marked by exostoses near the extremities of the diaphysis of long bones.

exostosis (pl. exostoses) (ek´sos-tō´sis),

n (hyperostosis) a bony growth projecting from a bony surface.

Mandibular tori exostosis.

exostosis

pl. exostoses [Gr.] a benign new growth projecting from a bone surface and characteristically capped by cartilage.

exostosis cartilaginea

a variety of osteoma consisting of a layer of cartilage developing beneath the periosteum of a bone.

inherited multiple exostosis

a benign hereditary disorder in horses. The lesions are visible externally but appear to cause little inconvenience. Similar to multiple cartilaginous exostoses (see below) in dogs and cats.

multiple cartilaginous e's

multiple bony exostoses in bones formed by enchondral ossification are seen in young dogs, usually on vertebrae, ribs and long bones. Adult cats are infrequently affected, and mainly on cranial bones. The bony enlargements are painless, but may cause musculoskeletal or neurological dysfunction. Neoplastic transformation has been reported. An hereditary basis is suspected in dogs. Called also diaphyseal aclasis, metaphyseal aclasis, osteochondromatosis, and in horses, inherited multiple exostosis (see above). See also osteophyte.

periarticular exostosis

occurs in any joint injury, commencing as cartilaginous osteophytes within a few days of the injury occurring.

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aclasis Bayonet Hand cartilage capped exostosis cartilaginous diaphyseal diaphyseal aclasis diaphyseal dysplasia diaphysial aclasis exostectomy exostosis cartilaginea exostotic goundou hereditary multiple exostoses hyperostosis ivory exostosis Langer-Giedion syndrome multiple cartilaginous exostoses multiple exostoses Ollier's dyschondroplasia	hereditary amyloidosis hereditary angioedema hereditary angioneurotic edema hereditary ataxia hereditary benign intraepithelial dyskeratosis hereditary brown enamel hereditary cancer syndrome hereditary cerebellar ataxia hereditary cerebral hemorrhage with amyloidosis, Dutch type hereditary cerebral leukodystrophy hereditary chorea hereditary coproporphyria hereditary deforming chondroplasia hereditary disorder hereditary elliptocytosis hereditary enamel hypoplasia hereditary essential tremor hereditary fructose intolerance hereditary hemochromatosis hereditary hemorrhagic telangiectasia hereditary hypertrophic neuropathy hereditary hyperuricemia hereditary lymphedema hereditary motor & sensory neuropathy hereditary multiple exostoses hereditary multiple exostosis hereditary mutation hereditary neoplasia hereditary nephritis hereditary neuralgic amyotrophy hereditary nonpolyposis colon cancer Hereditary Opalescent Dentin hereditary oral disease hereditary osteoonychodysplasia hereditary persistence of fetal hemoglobin hereditary preneoplasia hereditary progressive arthro-ophthalmopathy hereditary protoporphyria hereditary renal adysplasia hereditary sensory neuropathy hereditary spherocytosis hereditary spinal ataxia hereditary thrombophilia hereditary tyrosinemia heredity heredo- heredofamilial heredomacular degeneration Hereford Herellea Hering's law of cure	hereditary m's hereditary m's hereditary mechanics Hereditary Medullary Thyroid Carcinoma hereditary melanoma hereditary melanoma hereditary melanoma hereditary melanoma Hereditary Microspherocytic Hemolytic Anemia Hereditary Mismatch Repair Deficiency Syndrome Hereditary mixed polyposis syndrome hereditary motor & sensory neuropathy hereditary motor and sensory neuropathy hereditary motor and sensory neuropathy hereditary motor and sensory neuropathy hereditary motor and sensory neuropathy Hereditary Motor and Sensory Neuropathy type 1 Hereditary Motor and Sensory Neuropathy Type I hereditary motor and sensory neuropathy type II Hereditary Motor and Sensory Neuropathy Type III Hereditary Motor and Sensory Neuropathy Type V Hereditary Motor and Sensory Neuropathy, Lom Hereditary Motor Neuronopathy Hereditary Motor Neuropathy hereditary motor sensory neuropathy type 1A Hereditary Motor Sensory Neuropathy Type 3 Hereditary Motor Sensory Neuropathy Type I hereditary multiple exostoses hereditary multiple exostoses hereditary multiple exostoses hereditary multiple exostosis Hereditary mutation Hereditary mutation hereditary myelopathy of Afghan hounds Hereditary Myopathy of Labrador Retrievers hereditary neoplasia hereditary nephritis hereditary nephritis Hereditary Nephritis Foundation Hereditary Neuralgic Amyotrophy Hereditary Neuralgic Amyotrophy Hereditary Neurological Disease Centre hereditary neuronal abiotrophy of Swedish Lapland dogs hereditary neuronal abiotrophy of Swedish Lapland dogs hereditary neuronal abiotrophy of Swedish Lapland dogs hereditary neuropathy hereditary neuropathy hereditary neuropathy Hereditary Neuropathy with Liability to Pressure Palsies Hereditary Neuropathy with Pressure Palsies Hereditary non-polyposis colon cancer Hereditary Non-Polyposis Colon Cancer Syndrome Hereditary Non-Polyposis Colorectal Hereditary Non-Polypotic Colorectal Cancer Hereditary non-spherocytic hemolytic anemia Hereditary non-spherocytic hemolytic anemia hereditary nonpolyposis colon cancer Hereditary Nonpolyposis Colorectal Cancer Syndrome Carcinomas Hereditary Nonpolyposis Colorectal Cancer Type 4 Hereditary Nonpolyposis Colorectal Cancer/Carcinoma Hereditary Nonspherocytic Hemolytic Anemia

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