Clinical, Microscopic, and Molecular Aspects of Canine Leproid Granuloma in the United States

Leproid granulomas from seven dogs in the United States were evaluated. Gross characteristics included nodular and ulcerated dermal and subcutaneous lesions primarily on the caudal aspects of the pinnae and to a lesser extent on the muzzle, face, and forelimbs. In all except one dog, there was compl...

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Veröffentlicht in:Veterinary pathology 2002-03, Vol.39 (2), p.234-239
Hauptverfasser: Foley, J. E., Borjesson, D., L Gross, T., Rand, C., Needham, M., Poland, A.
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container_end_page 239
container_issue 2
container_start_page 234
container_title Veterinary pathology
container_volume 39
creator Foley, J. E.
Borjesson, D.
L Gross, T.
Rand, C.
Needham, M.
Poland, A.
description Leproid granulomas from seven dogs in the United States were evaluated. Gross characteristics included nodular and ulcerated dermal and subcutaneous lesions primarily on the caudal aspects of the pinnae and to a lesser extent on the muzzle, face, and forelimbs. In all except one dog, there was complete regression of the lesions within 6 months, either with no therapy or after surgical resection. Cytology or histopathology revealed pyogranulomatous inflammation with few to many acid-fast mycobacterial bacilli within macrophages. The organisms could not be cultivated in vitro. DNA sequencing of part of the 16S ribosomal RNA gene region revealed 99–100% homology among fragments from five of these dogs and fragments from dogs in the South Pacific. This syndrome occurs in dogs in North America and the prognosis is excellent, in contrast to the prognosis for rapid-growing or tuberculous mycobacteriosis.
doi_str_mv 10.1354/vp.39-2-234
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subjects Animals
Dog Diseases - microbiology
Dog Diseases - pathology
Dogs
Female
Granuloma - microbiology
Granuloma - pathology
Granuloma - veterinary
Male
Mycobacterium - genetics
Mycobacterium - isolation & purification
Mycobacterium Infections - microbiology
Mycobacterium Infections - pathology
Mycobacterium Infections - veterinary
Polymerase Chain Reaction - veterinary
Prognosis
RNA, Ribosomal, 16S - analysis
Skin Diseases, Bacterial - microbiology
Skin Diseases, Bacterial - pathology
Skin Diseases, Bacterial - veterinary
title Clinical, Microscopic, and Molecular Aspects of Canine Leproid Granuloma in the United States
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