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Your search keyword '"Head and Neck Neoplasms veterinary"' showing total 5 results
Start Over Descriptor "Head and Neck Neoplasms veterinary" Publisher canadian veterinary medical association
5 results on '"Head and Neck Neoplasms veterinary"'

1. Head and neck squamous cell carcinoma with heterotopic ossification, lymphovascular invasion, and nodal and pulmonary metastases in a 23-year-old Morgan gelding.

Author

Townsend KS, Johnson PJ, and Kuroki K

Subjects
Male, Animals, Horses, Squamous Cell Carcinoma of Head and Neck veterinary, Carcinoma, Squamous Cell veterinary, Skin Neoplasms pathology, Skin Neoplasms veterinary, Lung Neoplasms veterinary, Lung Neoplasms secondary, Head and Neck Neoplasms veterinary, Horse Diseases diagnosis
Abstract

Primary squamous cell carcinoma of the head and neck occurs in the skin or squamous epithelial lining tissues of the oral cavity, pharynx, larynx, and sinonasal tract. Although it is a common tumor in horses, distant metastatic spread to the lung is rare. This report describes a case of metastatic pulmonary squamous cell carcinoma in a 23-year-old Morgan gelding. The clinical signs displayed by this gelding in some ways mimicked the typical presentation of equine multinodular pulmonary fibrosis or thoracic lymphoma. The postmortem diagnosis in this case was head and neck squamous cell carcinoma, but a primary site of origin could not be ascertained. Cancer-associated heterotopic ossification (HO) was also identified in this case; this is an exceedingly rare finding with equine pulmonary neoplasia. Key clinical message: Careful physical examination should be undertaken in all horses presenting with clinical signs of intrathoracic disease. Clinical and radiographic abnormalities in this case of pulmonary metastatic disease resembled some of those associated with interstitial pneumonia. Rarely encountered in domestic animal species, there has been only 1 previous report of HO in a case of oronasal carcinoma in a horse., (Copyright and/or publishing rights held by the Canadian Veterinary Medical Association.)

Published
2023

2. Bilateral second pharyngeal cleft cysts in 2 calves on the same farm.

Author

Ricard RM, Lightfoot KC, Burton J, and Wobeser BK

Subjects
Animals, Branchial Region abnormalities, Cattle, Farms, Female, Pregnancy, Branchioma diagnosis, Branchioma veterinary, Cattle Diseases epidemiology, Head and Neck Neoplasms veterinary
Abstract

Pharyngeal cleft cysts (also called branchial cleft cysts) are rare congenital defects of the pharynx region that appear as soft, fluctuant cystic structures on the ventral neck. These cysts are formed by anomalous regression of the pharyngeal clefts during embryonic development and are lined by pseudostratified columnar to squamous, partially ciliated epithelium on histopathology. Development of these cysts is sporadic, with no currently identified risk factors in veterinary species. The cysts are typically unilateral, and primarily diagnosed in mature animals of various species. The objective of this article is to report 2 cases of bilateral second pharyngeal cleft cysts in 2 calves with no shared pedigree, located on the same farm. To the authors' knowledge, this is the first report of geographically linked second pharyngeal cleft cysts in veterinary species, and the first cases of bilateral cysts in cattle. Key clinical message: Pharyngeal cleft cysts are an important differential for soft, fluctuant, and cystic structures on the ventral neck of all species. These cases are typically unilateral, diagnosed in mature animals and are sporadic with no currently identified risk factors in veterinary species., (Copyright and/or publishing rights held by the Canadian Veterinary Medical Association.)

Published
2022

3. Indirect magnetic resonance lymphography of the head and neck of dogs using Gadofluorine M and a conventional gadolinium contrast agent: a pilot study.

Author

Mayer MN, Kraft SL, Bucy DS, Waldner CL, Elliot KM, and Wiebe S

Subjects
Animals, Contrast Media administration & dosage, Dog Diseases diagnosis, Dogs, Female, Fluorocarbons, Head and Neck Neoplasms diagnosis, Head and Neck Neoplasms veterinary, Male, Pilot Projects, Gadolinium administration & dosage, Lymph Nodes pathology, Lymphography veterinary, Magnetic Resonance Imaging veterinary, Organometallic Compounds administration & dosage
Abstract

The purpose of this pilot study was to evaluate lymph node enhancement with an indirect magnetic resonance (MR) lymphography technique using 2 different contrast agents in the head and neck region of healthy dogs. Five dogs were imaged at various times after intradermal injection of gadoversetamide and Gadofluorine M (minimum of 1 week apart) in the right and left mandibular, temporal, and lateral neck regions. We observed consistent progressive enhancement with time in the mandibular, retropharyngeal, and superficial cervical lymph nodes. The node enhancement was comparable for both contrast agents. Contrast enhancement of the parotid lymph nodes was not seen. We conclude that this technique of indirect MR lymphography using either agent could be used to identify those lymph nodes at highest risk of metastatic disease in dogs with cancer, and to guide staging and treatment.

Published
2012

4. Acute oropharyngeal effects of full-course radiation treatment of tumors of the head.

Author

Collen EB and Mayer MN

Subjects
Animals, Cat Diseases etiology, Cat Diseases radiotherapy, Cats, Dog Diseases etiology, Dog Diseases radiotherapy, Dogs, Dose Fractionation, Radiation, Dose-Response Relationship, Radiation, Head and Neck Neoplasms radiotherapy, Radiation Injuries etiology, Radiation Tolerance, Radiotherapy adverse effects, Radiotherapy Dosage, Head and Neck Neoplasms veterinary, Mouth Mucosa radiation effects, Radiation Injuries veterinary, Radiotherapy veterinary
Published
2008

5. Mastocytoma in a cow: a case report.

Author

Ames TR and O'Leary TP

Subjects
Animals, Cattle, Female, Head and Neck Neoplasms pathology, Lymphatic Metastasis, Mast-Cell Sarcoma pathology, Microscopy, Electron, Cattle Diseases pathology, Head and Neck Neoplasms veterinary, Mast-Cell Sarcoma veterinary
Abstract

Mastocytoma was diagnosed in a four year old Holstein cow. The enlarging mass was clinically determined to be metastatic to the right superficial cervical lymph node. Cytological examination of both sites revealed mast cell neoplasia. Histopathological examination confirmed the presence of this tumor in these same sites as well as in liver, kidney and adrenal. Ultrastructurally, the mass contained round cells with electron dense granules in the cytoplasm.

Published
1984

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