This report examines a case of masticatory muscle myositis in a dog. Inflammatory disorders can affect the muscles of mastication. Two types of inflammatory myopathies have been described. The histopathology and immunochemical features of this case suggest an immune mediated basis for this disorder. The diagnosis and treatment are described for this immune mediated inflammatory myositis.
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References
1.
DuncanI.D., GriffithsI.R.Inflammatory muscle disease in the dog. In: KirkR.W., ed. Current Veterinary Therapy 7.Philadelphia: WB Saunders, 1980: 779–782.
2.
GriffithsI.R., DuncanI.D., McQueenA.Neuromuscular disease in dogs:some aspects of its investigation and diagnosis.J Small Anim Pract1973; 14: 533–554.
3.
HardingH.P., OwenL.N.Eosinophilic myositis in the dog.J Comp Pathol1956; 66: 109–122.
4.
MartinW.P., ThompsonR.An unusual case of masticatory muscular atrophy in a dog.Can Vet J1960; 18: 371–373.
5.
WhitneyJ.C.Atrophic myositis in a dog: the differentiation of this disease from eosinophilic myositis.Vet Rec1957; 69: 130–131.
6.
WintersH., StephensonH.C.A case of eosinophilic myositis in a dog.Cornell Vet1952; 42: 521–537.
7.
SheltonG.D., CardinetG.H.III, BandmanE.Canine masticatory muscle disorders: A clinicopathological and immunochemical study of 29 cases.Muscle Nerve1987; 10: 753–766.
8.
OrvisJ.S., CardinetG.H.IIICanine muscle fiber types and susceptibility of masticatory muscles to myositis.Muscle Nerve1981; 4: 354–359.
9.
SheltonG.D.Differential diagnosis of muscle diseases in companion animals.Progress in Vet Neurology1991; 2(1): 27–33.
10.
Le CouteurR.A., DowS.W., SissonA.F.Metabolic and endocrine myopathies of dogs and cats.Seminars in Vet Med and Surg (Sm Anim)1989; 4: 146.
11.
BichselP., JacobsG., OliverJ.E.Neurologic manifestations associated with hypothyroidism in fourdogs.JAVMA1988; 192: 1745.
12.
BraundK.G., DillonA.R., AugustJ.R.Hypothyroid myopathy in two dogs.Vet Path1981; 18: 589.
13.
IndrieriR.J., WhalenL.R., CardinetG.H.IIINeuromuscular abnormalities associated with hypothyroidism and lymphocytic thyroiditis in three dogs.JAVMA1987; 190: 544.
14.
GreeneC.E., LorenzM.D., MunnellJ.G.Myopathy associated with hyperadrenocorticism in the dog.JAVMA1979; 174: 1310.
15.
BraundK.G., DillonA.R., MikealR.L.Experimental investigation of glucocorticoid-in-duced myopathy in the dog.Exp Neurol1980; 68: 50.
16.
DowS.W., Le CouteurR.A., FettmanM.J.Potassium depletion in cats: hypokalemic polymyopathy.JAVMA1987; 191: 1563.
17.
SheltonG.D., CardinetG.H.IIIPathophysiologic basis of canine muscle disorders.J Vet Int Med1987; 1: 36.
18.
McKerrellR.E., BraundK.G.Hereditary myopathy of Labrador Retrievers. In: KirkR.W., ed. Current Veterinary Therapy X.Philadelphia: WB Saunders Co, 1989: 820.
19.
MooreR.W., RouseG.P., PiermatteiD.L.Fibrotic myopathy of the semitendinosus muscle in four dogs.Vet Surg1981; 10: 169.
20.
CardinetG.H.Nemaline rods in neuromuscular disorders of the dog.Zbl Vet Med C Anat Histo Embryol1984; 13: 87.
21.
DalakasM.C.Polymyositis, dermatomyositis, and inclusion-body myositis.New Engl J Med1991; 325(21): 1487–1498.
22.
SheltonG.D.What's new in inflammatory myopathies. Proc 9th ACVIM Forum, New Orleans, 1991.
23.
SheltonG.D.Muscle biopsy: why, when, and what can be learned. Proc 9th ACVIM Forum, New Orleans, 1991.
24.
DalakasM.D. ed Polymyositis and dermatomyositis.Boston: Butter-worths, 1988.
25.
WhitakerJ.N.Inflammatory myopathy: a review of etiologic and pathogenetic factors.Muscle Nerve1982; 5: 573–592.
26.
KagenL.J., AramS.Creatinine kinase activity inhibitor in sera from patients with muscle disease.Arthritis Rheum1987; 30: 213–217.
27.
BankerB.Q.Parasitic myositis and other inflammatory myopathies. In: EngelA.G., BankerB.Q., eds. Myology.New York: McGraw-Hill, 1986.
28.
LaurinA.R.Lesions of skeletal muscle in leptospirosis.Am J Pathol1955; 31: 501.
29.
CooleyA.J., ClemmonsR.M., GrossT.L.Heartworm disease manifested by encephalomyelitis and myositis in a dog.JAVMA1987; 190: 431.
30.
BellahJ.R., StiffM.E., RussellR.G.Thymoma in the dog: two case reports and review of 20 additional cases.JAVMA1983; 183: 306.
31.
AronsohnM.G., SchunkK.L., CarpenterJ.L.Clinical and pathologic features of thymoma in 15 dogs.JAVMA1984; 184: 1355.
32.
SheltonG.D., BandmanE., CardinetG.H.IIIElectrophoretic comparison of myosins from masticatory muscles and selected limb muscles in the dog.Am J Vet Res1985; 46: 493–498.
33.
KornegayJ.N., GorgaczE.J., DaweD.L.Familial canine derma-tomyositis: clinicopathologic, immunologic, and serologic studies.Am J Vet Res1985; 46: 1870–1875.
34.
HargisAm, HauptK.H., PrierD.J.A skin disorder in three Shetland sheepdogs: comparison with familial canine dermatomyositis of collies.Comp Cont Ed Pract Vet1985; 7: 306.
35.
GigerU., WernerL.L., MillichampN.J.Sulfadiazine-induced allergy in six doberman pinschers.JAVMA1985; 186: 479.
