ABSTRACT. We found a case of salivary mucocele that originated in the minor salivary gland (palatine gland) of the soft palate in a dog. At first admission, the soft palate swelled remarkably. Computed tomography (CT) revealed cystic radiolucency inside a large quantity of liquid in the soft palate, and most of the airway was occupied. Marsupialization was performed, but since a recurrence was observed one month later, the salivary mucocele was removed. There has been no report of salivary mucocele arising from the minor salivary gland of the soft palate in dogs. To our knowledge, this case is the first. Complete removal, including minor salivary glands surrounding the lesion, is necessary for treatment of salivary mucocele in dogs. The mucocele is a common lesion of the oral mucosa resulting from rupture of a saliva gland duct and spillage of mucin into the surrounding soft tissues [11]. Although salivary mucoceles of the minor salivary glands are common in human dentistry, reports of them in the palatine glands, which are minor salivary glands, is very rare [2,3,7,9,11]. To date, all reports in dogs have concerned salivary mucoceles that arose from the major salivary glands, not salivary mucoceles from the minor salivary glands [4][5][6]. CT was performed on a dog with a remarkably swollen soft palate and recognized dyspnea. The removal operation led to the diagnosis that the salivary mucocele originated in a minor salivary gland (palatine gland).This case was a 7-year-old female Welsh Corgi weighing 9.4 kg. Three years previously, the dog presented with an abnormal breathing sound at 4 years of age. At that time, remarkable swelling of the soft palate was confirmed by oral examination under sedation, and approximately 10 ml of blackish brown, highly viscous liquid was collected by puncture and drainage. Complete blood cell count and serum biochemistry profiles were within normal limits. The dog improved temporarily after puncture and drainage of the soft palate. However, recurrence occurred every 2-6 months. When the condition changed for the worse, the dog lapsed into dyspnea as a result of airway occlusion. In addition, 15 ml or more of fluid occasionally accumulated. In the puncture fluid examination, the bacterial culture was negative, and some reactive neutrophils were noted in the retained fluid, but there were no atypical cells. Therefore, it was judged that the swelling of the soft palate was not infectiousness or neoplastic. Fundamental treatment was judged difficult by puncture drainage, and the dog was referred to the Animal Medical Center, Gifu University, for screening and treatment.At first admission, breathing with a snoring sound and slight accelerated respiration were noted. When the mouth was opened and observed, the soft palate was observed to * CORRESPONDENCE TO: WATANABE, K., Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan. e-mail: nabechan@gifu-u.ac.jp ©2012 The Japanese Socie...
A 5-year, 9-month-old female California sea lion (Zalophus califomianus) began feeding poorly five months ago. It presented with swelling in front of the right orbit and drainage from the gingival mucosa in the right maxillary canine part. The swelling was improved by administration of an antibiotic and feeding also resumed. However, a relapse subsequently occurred. Because bone resorption was observed around the root apex of the maxillary right canine in a radiographic examination under husbandry training, an anesthetic chamber by isoflurane was introduced, and general anesthesia was maintained after intubation. Oral examination and treatment were then performed. Oral examination revealed pulp exposure from wear in many teeth. A fistula was recognized in the buccal gingival mucosa where the root apex of the maxillary right canine was located. When the maxillary right canine and all teeth with exposed, dental pulp was extracted and the sockets curetted, and the socket of the right maxillary canine and the fistula were penetrated. Therefore, this case was diagnosed as an internal dental fistula by periapical lesion of this tooth. Ten months after the operation the sea lion was in good condition. There are many pulp exposures by attrition in large exhibit animals. Improvement of the rearing environment, and diagnosis and treatment by routine oral and radiographic examination are therefore necessary.
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