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Hifumi T, Inokuchi Y, Tsujio M, Tanaka S, Hirano S, Miyoshi N. Bilateral hibernomas in the femoral regions of a dog. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2024; 65:367-370. [PMID: 38562979 PMCID: PMC10945445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
A 14-year-old intact male Chihuahua dog was presented with masses located between the biceps femoris and adductor muscles in both hind limbs. Based on histopathological, immunohistochemical, and ultrastructural findings, we diagnosed these masses as bilateral hibernomas in the femoral regions. The dog had no evidence of recurrence or metastasis of the hibernomas through a 4-month postoperative follow-up. This is apparently the first report of bilateral hibernomas in the femoral regions of a dog. Key clinical message: Bilateral hibernomas should be considered as a differential diagnosis for masses occurring in the femoral regions of dogs.
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Affiliation(s)
- Tatsuro Hifumi
- Laboratory of Veterinary Histopathology (Hifumi, Miyoshi) and Laboratory of Veterinary Anatomy (Tsujio) and Transboundary Animal Diseases Research Center (Hirano), Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; Fukuoka Higashi Animal Hospital, Kashiiekimae, Fukuoka Higashi ward, Fukuoka 813-0013, Japan (Inokuchi); Kyushu Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, 2702 Chuzan, Kagoshima 891-0105, Japan (Tanaka)
| | - Yoshinori Inokuchi
- Laboratory of Veterinary Histopathology (Hifumi, Miyoshi) and Laboratory of Veterinary Anatomy (Tsujio) and Transboundary Animal Diseases Research Center (Hirano), Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; Fukuoka Higashi Animal Hospital, Kashiiekimae, Fukuoka Higashi ward, Fukuoka 813-0013, Japan (Inokuchi); Kyushu Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, 2702 Chuzan, Kagoshima 891-0105, Japan (Tanaka)
| | - Masashi Tsujio
- Laboratory of Veterinary Histopathology (Hifumi, Miyoshi) and Laboratory of Veterinary Anatomy (Tsujio) and Transboundary Animal Diseases Research Center (Hirano), Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; Fukuoka Higashi Animal Hospital, Kashiiekimae, Fukuoka Higashi ward, Fukuoka 813-0013, Japan (Inokuchi); Kyushu Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, 2702 Chuzan, Kagoshima 891-0105, Japan (Tanaka)
| | - Shogo Tanaka
- Laboratory of Veterinary Histopathology (Hifumi, Miyoshi) and Laboratory of Veterinary Anatomy (Tsujio) and Transboundary Animal Diseases Research Center (Hirano), Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; Fukuoka Higashi Animal Hospital, Kashiiekimae, Fukuoka Higashi ward, Fukuoka 813-0013, Japan (Inokuchi); Kyushu Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, 2702 Chuzan, Kagoshima 891-0105, Japan (Tanaka)
| | - Shinji Hirano
- Laboratory of Veterinary Histopathology (Hifumi, Miyoshi) and Laboratory of Veterinary Anatomy (Tsujio) and Transboundary Animal Diseases Research Center (Hirano), Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; Fukuoka Higashi Animal Hospital, Kashiiekimae, Fukuoka Higashi ward, Fukuoka 813-0013, Japan (Inokuchi); Kyushu Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, 2702 Chuzan, Kagoshima 891-0105, Japan (Tanaka)
| | - Noriaki Miyoshi
- Laboratory of Veterinary Histopathology (Hifumi, Miyoshi) and Laboratory of Veterinary Anatomy (Tsujio) and Transboundary Animal Diseases Research Center (Hirano), Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; Fukuoka Higashi Animal Hospital, Kashiiekimae, Fukuoka Higashi ward, Fukuoka 813-0013, Japan (Inokuchi); Kyushu Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, 2702 Chuzan, Kagoshima 891-0105, Japan (Tanaka)
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Craig CJ, Young BD, Andries CV, Aschenbroich SA. Imaging diagnosis: CT characteristics of a retrobulbar hibernoma in a dog. Vet Radiol Ultrasound 2024; 65:145-148. [PMID: 38297959 DOI: 10.1111/vru.13332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/10/2023] [Accepted: 01/08/2024] [Indexed: 02/02/2024] Open
Abstract
A 12-year-old female spayed Beagle was referred for investigation of exophthalmos. CT revealed a well-defined, retrobulbar mass causing rostro-dorsal displacement of the left globe. The mass had a mildly heterogeneous precontrast soft tissue attenuation with mild heterogeneous enhancement following iohexol administration. The mass was surgically removed en bloc with an orbital exenteration. Histopathology confirmed the mass to be a hibernoma, a benign tumor of brown adipose tissue. Hibernomas have CT characteristics consistent with both benign and malignant adipose tumors and may be underrecognized by radiologists.
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Affiliation(s)
| | | | | | - Sophie A Aschenbroich
- Veterinary Diagnostic Laboratory, Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
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