Durand, A., Finck, M., Sullivan, M., and Hammond, G. (2016) Computed tomography and magnetic resonance diagnosis of variations in the anatomical location of the major salivary glands in 1680 dogs and 187 cats. Veterinary Journal, 209, There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it.http://eprints.gla.ac.uk/118346/
OBJECTIVE:To assess the ventro 20° rostral-dorsocaudal oblique (V20R-DCdO) projection for canine nasal disease as an alternative to the dorsoventral intra-oral (DVIO) view.
METHODS:Thirty-one dogs with nasal disease underwent radiography and CT with final diagnosis achieved through rhinoscopy, biopsy or cytology. Three independent observers, blinded to diagnosis, reviewed the nasal radiographs on two separate occasions. Intra-and inter-observer agreement and level of confidence on radiographic diagnosis was evaluated and radiographic diagnosis was compared with CT and definitive diagnosis.
RESULTS:The V20R-DCdO projection of canine nasal cavities was feasible in anaesthetised patients and gave diagnostic quality images in most dogs. Assessment of this view showed moderate to substantial agreement with CT diagnosis but gave lower confidence in diagnosis. Interpretation of this radiographic projection had substantial to almost perfect repeatability but moderate reproducibility.
CLINICAL SIGNIFICANCE:The V20R-DCdO projection may be used as a valuable initial screening tool for canine nasal pathology in practices without access to advanced imaging, although CT is still likely to provide greater diagnostic information.
An eight-year-old male neutered boxer and a 10-year-old female neutered lurcher were presented with palpable masses in the region of the right parotid salivary gland. In both cases, fine needle aspirates yielded adipose cells, normal salivary epithelium and some blood contamination. CT images showed a mixed fat attenuating mass in the region of the right parotid salivary gland, without a normal ipsilateral parotid salivary gland. Surgical excision was performed in both cases and histopathology was consistent with sialolipoma. Neither mass has recurred 7 and 16 months after surgery. Sialolipoma should therefore be considered as a differential in dogs with a mass in this location. Fine needle aspirates showing salivary epithelium and adipose cells should not be dismissed as non-diagnostic. To the authors’ knowledge, these are the two first reported cases of sialolipomas of the parotid salivary gland in dogs and the first description of cross-sectional imaging of sialolipomas.
An eight-year-old, intact male English springer spaniel was presented with a five-month history of right forelimb lameness. MRI revealed a right axillary mass with associated nerve root thickening. Radiographs showed no evidence of bone involvement or pulmonary metastasis. A biopsy was taken of the mass, and histopathological examination was consistent with a high-grade chondrosarcoma. Conservative treatment was elected, and the patient euthanased four months later, after which postmortem examination was performed.
The ventro 20° rostral-dorsocaudal oblique projection may be used as a valuable initial screening tool for canine nasal pathology in practices without access to advanced imaging, although computed tomography is still likely to provide greater diagnostic information.
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