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Olimpo M, Ferraris EI, Parisi L, Buracco P, Rizzo SG, Giacobino D, Degiovanni A, Maniscalco L, Morello E. Diagnostic Findings and Surgical Management of Three Dogs Affected by Osseous Metaplasia Secondary to a Salivary Mucocele. Animals (Basel) 2023; 13:ani13091550. [PMID: 37174587 PMCID: PMC10177029 DOI: 10.3390/ani13091550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
Saliva is an irritant of the subcutaneous tissue, thus causing the development of a non-epithelial reactive pseudocapsule. Metaplastic ossification of the pseudocapsule is a condition rarely described in the veterinary literature. The main causes of calcification are trauma, tumours, various chronic inflammatory conditions and fibrodysplasia ossificans progressiva. The aim of the present case series was to describe three dogs affected by a calcified salivary mucocele. The medical records of dogs affected by a cervical sialocele were retrospectively evaluated, and three cases met the inclusion criteria. All the dogs in this study were referred to the Veterinary Teaching Hospital (VTH) of the Department of Veterinary Sciences of the University of Turin (Turin, Italy) for a large solid mass in the intermandibular region. The diagnosis of a mucocele was confirmed clinically by centesis and by radiography or CT. Complete excision of both the pseudocyst and the ipsilateral mandibular/monostomatic sublingual salivary gland was performed in all cases. The histological report showed large areas of bone metaplasia within the pseudocapsule and chronic sialadenitis. Based on this limited case series, complete excision of the pseudocyst and a concurrent sialoadenectomy provided an effective treatment for this rare salivary mucocele disorder.
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Affiliation(s)
- Matteo Olimpo
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | | | - Lorenza Parisi
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Paolo Buracco
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Sara Gioele Rizzo
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Davide Giacobino
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Andrea Degiovanni
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Lorella Maniscalco
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Emanuela Morello
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
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O'Connell K, Leach J, Berman K, Knottenbelt C, Cazzini P. What is your diagnosis? Salivary gland mass in a dog. Vet Clin Pathol 2016; 45:389-90. [PMID: 27152746 DOI: 10.1111/vcp.12353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Kelly O'Connell
- School of Veterinary Medicine, University of Glasgow, Glasgow, UK
| | - Josh Leach
- Veterinary Diagnostic Service, University of Glasgow, Glasgow, UK
| | - Katherine Berman
- Veterinary Diagnostic Service, University of Glasgow, Glasgow, UK
| | - Clare Knottenbelt
- Small Animal Teaching Hospital, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Paola Cazzini
- Veterinary Diagnostic Service, University of Glasgow, Glasgow, UK
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Lee N, Choi M, Keh S, Kim T, Kim H, Yoon J. Zygomatic sialolithiasis diagnosed with computed tomography in a dog. J Vet Med Sci 2014; 76:1389-91. [PMID: 24942114 PMCID: PMC4221173 DOI: 10.1292/jvms.14-0151] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 10-year-old castrated Shih-Tzu male dog was referred for examination of acute right exophthalmos, protrusion of the third eyelid and soft tissue swelling ventral to the globe. Ultrasonography revealed echogenic fluid around the right globe. Computed tomography (CT) showed an enlarged right zygomatic salivary gland compared with the left zygomatic gland and an amorphous cystic mass ventral to the right globe. Hyperdense material, which we suspected to be a sialolith, was identified in the right zygomatic gland. The zygomatic gland and the cystic lesion were removed, and a zygomatic sialocele with sialolith and ductal obstruction were found by histopathological examination. CT was a useful diagnostic tool for zygomatic sialolithiasis.
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Affiliation(s)
- Namsoon Lee
- Haemaru Referral Animal Hospital, Seongnam-Si, Gyeonggi-do 463-050, Republic of Korea
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Fernandes TR, Grandi F, Monteiro LN, Salgado BS, Rocha RM, Rocha NS. Ectopic ossification presenting as osteoid metaplasia in a salivary mucocele in a Shih Tzu dog. BMC Vet Res 2012; 8:13. [PMID: 22296807 PMCID: PMC3285089 DOI: 10.1186/1746-6148-8-13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2011] [Accepted: 02/01/2012] [Indexed: 11/25/2022] Open
Abstract
Background Salivary mucocele is an accumulation of saliva in a single or multiloculated cavity lined by connective tissue that is contiguous to a salivary gland-duct complex and is the most common condition affecting the salivary glands in dogs. Occasionally, different types of metaplastic lesions, such as squamous and osseous metaplasia - which are rare lesions in animals - can be observed in association with salivary mucocele. Case presentation A right facial enlargement was suddenly observed in a 4-year-old non-spayed female Shih-Tzu dog. The lesion presented itself as a soft and fluctuant mass located in the right side of the face near to the neck. Histologically, the mass consisted of a cavitary formation without an epithelial lining. Additionally, microscopic examination revealed the presence of osteoid-producing cells which gave rise to areas of bone formation, probably induced by irritation due to the presence sialoliths. Such cells and bone formations were also present in the cavity wall, consequently leading us to classify the condition as a salivary mucocele with osseous metaplasia. Conclusions In the present case, the pathogenesis was probably associated with the presence of sialoliths, which can behave as etiological agents for the metaplastic lesion. The occurrence of osteoid metaplasia is a rare peculiar condition in the canine salivar y gland, and due to the rarity and lack of information about this specific disease, no clinical data can yet be associated with the development of salivary mucocele with osseous metaplasia in dogs.
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Affiliation(s)
- Thaís R Fernandes
- Serviço de Patologia Veterinária, Departamento de Clínica Veterinária, Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista - UNESP, Botucatu, Brazil.
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Yasuno H, Nagai H, Ishimura Y, Watanabe T, Yamasaki H, Anayama H, Takai Y, Yamauchi H, Hara Y, Murai F, Kandori H. Salivary mucocele in a laboratory beagle. J Toxicol Pathol 2012; 24:131-5. [PMID: 22272052 PMCID: PMC3234606 DOI: 10.1293/tox.24.131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Accepted: 01/06/2011] [Indexed: 11/19/2022] Open
Abstract
The histologic characteristics of a salivary mucocele in a beagle used in a toxicity study are described in this report. A pale yellowish cyst under the mandibular skin containing frothy mucus was observed at necropsy. Microscopically, numerous villous projections arose from the internal surface of the cyst and were lined by stratified epithelial-like macrophages, which were immunopositive for macrophage scavenger receptor A. A ruptured sublingual interlobar duct connected to the lumen was observed near the cyst. Luminal amorphous material showed a positive reaction with Alcian blue and periodic acid-Schiff staining as did mucin in the sublingual gland. Ultrastructurally, the epithelial-like macrophages had numerous vacuoles containing electron-lucent material, which was presumed to be lysosomal in origin, and had pseudopods on their cell surfaces interdigitating with those on the adjacent cells. This case report helps to understand the diversity of the background findings in beagles used in toxicity studies.
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Affiliation(s)
- Hironobu Yasuno
- Development Research Center, Takeda Pharmaceutical Company Limited, 2-17-85 Jusohonmachi, Yodogawa-ku, Osaka 532-8686, Japan
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Rahman MM, Kawaguchi H, Miyoshi N, Yabuki A, Nakamoto Y, Ozawa T, Yamato O. Pathological features of salivary gland cysts in a Shiba dog with GM1 gangliosidosis: a possible misdiagnosis as malignancy. J Vet Med Sci 2011; 74:485-9. [PMID: 22083095 DOI: 10.1292/jvms.11-0309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Salivary gland cysts are often concurrent with GM1 gangliosidosis in Shiba dogs. Although the etiology is unknown, these cysts may be misdiagnosed as malignant due to the accumulation of foamy cells. The present study investigated the cytological, histopathological, immunohistochemical and electron microscopic characteristics of salivary gland cysts in a Shiba dog affected with GM1 gangliosidosis. The salivary gland masses were surgically enucleated and examined clinicopathologically and pathologically in a 7-month-old Shiba dog with GM1 gangliosidosis. Many large cells with rich cytoplasm including vacuoles of various sizes, i.e., foamy cells, were observed in stamp smears from the cut-surface of the masses and histopathologically in major parts of the cyst wall. Some of these foamy cells presented features similar to a spider-web appearance. The foamy cells were confirmed to have originated from macrophages based on marked immunohistochemical expression of vimentin, HLA-DR, lysozyme and Iba1. An ultrastructural study demonstrated electron-dense vesicular structures in the vacuolated cells. Therefore, the masses were diagnosed pathologically as benign salivary gland cysts with accumulation of foamy cells. In conclusion, the histopathological features of the salivary gland cysts in this Shiba dog were similar to those of lipoma and/or liposarcoma. In such cases, immunohistochemical and ultrastructural examinations were useful in the differential diagnosis. Practitioners, clinical pathologists and pathologists should take GM1 gangliosidosis into consideration when they encounter salivary gland cysts in Shiba dogs.
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Affiliation(s)
- Mohammad Mahbubur Rahman
- Laboratory of Clinical Pathology, Department of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
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Park JK, Han JY, Hong IH, Hwang OK, Hong KS, Ji AR, Ki MR, Park SI, Kim TH, Choi DH, Jeong KS. Salivary mucocele with osseous metaplasia in a dog. J Vet Med Sci 2009; 71:975-7. [PMID: 19652488 DOI: 10.1292/jvms.71.975] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 4-year-old, male, dachshund was referred to a certain local veterinary hospital because of a soft and fluctuant swelling in the left upper cervical region. The swelling was surgically removed and appeared to be filled with bloody mucus. Grossly, the swelling was identified as salivary mucocele and showed small multifocal whitish ossified tissue on its surface. Microscopically, the wall of salivary mucocele appeared as granulation tissue surrounding mucin, which was composed of loose edematous and vascularized connective tissue containing chronic inflammatory cells such as lymphocytes, plasma cells and macrophages. Characteristically, present case had ossifying components formed by metaplastic spindle cells in the wall of salivary mucocele. Therefore, the present case was diagnosed as salivary mucocele with osseous metaplasia in a dog.
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Affiliation(s)
- Jin-Kyu Park
- College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Republic of Korea
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Abstract
A case of sialolithiasis of the sublingual/mandibular salivary gland and duct complex in a dog was reported. Sialoadenectomy of the ipsilateral glands successfully treated the associated sialocele.
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Affiliation(s)
- T Ryan
- Division of Veterinary Clinical Studies, Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Hospital for Small Animals, Roslin, Midlothian, EH25 9RG
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