Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a Dog

This case presents the first documented successful medical management of chronic nonbacterial osteomyelitis (CNO) in a small dog—a condition rarely described in veterinary medicine. A 4-year-old castrated male Pomeranian dog weighing 4.6 kg was presented with a 3-week history of right hindlimb lamen...

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Main Authors: Young-Sun Jeong, Yun-Joo Geum, Hyun-Jung Han
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Animals
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Online Access:https://www.mdpi.com/2076-2615/15/11/1593
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author Young-Sun Jeong
Yun-Joo Geum
Hyun-Jung Han
author_facet Young-Sun Jeong
Yun-Joo Geum
Hyun-Jung Han
author_sort Young-Sun Jeong
collection DOAJ
description This case presents the first documented successful medical management of chronic nonbacterial osteomyelitis (CNO) in a small dog—a condition rarely described in veterinary medicine. A 4-year-old castrated male Pomeranian dog weighing 4.6 kg was presented with a 3-week history of right hindlimb lameness. Radiographic examination revealed osteolytic lesions, periosteal reactions, and decreased muscle mass in the affected limb. Microbial and blood culture tests showed negative results, whereas cytological and histopathological analyses of the right distal femur confirmed neutrophilic inflammation and osteomyelitis, leading to a diagnosis of CNO. Clinical and radiographic improvements were observed following administration of bisphosphonates, disease-modifying anti-rheumatic drugs, and glucocorticoids. This case underscores the possibility of non-infectious osteomyelitis in dogs and suggests that adapting human treatment strategies may be beneficial. Further research is needed to clarify the diagnostic criteria and pathophysiology of CNO in veterinary medicine.
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spelling doaj-art-e72cbd2603494946aca46ddc277acc302025-08-20T03:46:49ZengMDPI AGAnimals2076-26152025-05-011511159310.3390/ani15111593Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a DogYoung-Sun Jeong0Yun-Joo Geum1Hyun-Jung Han2Department of Veterinary Emergency and Critical Care Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of KoreaDepartment of Veterinary Emergency and Critical Care Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of KoreaDepartment of Veterinary Emergency and Critical Care Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of KoreaThis case presents the first documented successful medical management of chronic nonbacterial osteomyelitis (CNO) in a small dog—a condition rarely described in veterinary medicine. A 4-year-old castrated male Pomeranian dog weighing 4.6 kg was presented with a 3-week history of right hindlimb lameness. Radiographic examination revealed osteolytic lesions, periosteal reactions, and decreased muscle mass in the affected limb. Microbial and blood culture tests showed negative results, whereas cytological and histopathological analyses of the right distal femur confirmed neutrophilic inflammation and osteomyelitis, leading to a diagnosis of CNO. Clinical and radiographic improvements were observed following administration of bisphosphonates, disease-modifying anti-rheumatic drugs, and glucocorticoids. This case underscores the possibility of non-infectious osteomyelitis in dogs and suggests that adapting human treatment strategies may be beneficial. Further research is needed to clarify the diagnostic criteria and pathophysiology of CNO in veterinary medicine.https://www.mdpi.com/2076-2615/15/11/1593bisphosphonatescaninedisease-modifying anti-rheumatic drugs (DMARDs)glucocorticoidsnon-infectious osteomyelitis
spellingShingle Young-Sun Jeong
Yun-Joo Geum
Hyun-Jung Han
Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a Dog
Animals
bisphosphonates
canine
disease-modifying anti-rheumatic drugs (DMARDs)
glucocorticoids
non-infectious osteomyelitis
title Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a Dog
title_full Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a Dog
title_fullStr Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a Dog
title_full_unstemmed Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a Dog
title_short Diagnosis and Management of Chronic Nonbacterial Osteomyelitis in a Dog
title_sort diagnosis and management of chronic nonbacterial osteomyelitis in a dog
topic bisphosphonates
canine
disease-modifying anti-rheumatic drugs (DMARDs)
glucocorticoids
non-infectious osteomyelitis
url https://www.mdpi.com/2076-2615/15/11/1593
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AT hyunjunghan diagnosisandmanagementofchronicnonbacterialosteomyelitisinadog