Torad Faisal A, Hassan Elham A
Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza Square P.O. 12211, Cairo, Egypt.
Vet Radiol Ultrasound. 2013 May-Jun;54(3):293-8. doi: 10.1111/vru.12014. Epub 2013 Feb 27.
Salivary mucocele is one of the causes of submandibular swelling in dogs and is due to a collection of mucoid saliva that has leaked from a damaged salivary gland. The purpose of this case series report was to describe the clinical and ultrasonographic characteristics of confirmed salivary mucoceles in 13 dogs admitted to the Faculty of Veterinary Medicine at Cairo University. The final diagnosis of salivary mucocele was based on aspirate cytology for all dogs and additional surgical excision for seven dogs. For dogs admitted from 2 weeks to 1 month from the onset of clinical signs, the cervical mucocele appeared as a round echogenic structure with a large volume of central anechoic content. The wall was a clearly identified hyperechoic structure surrounding the gland. For dogs admitted between 1 to 2 months from the onset of clinical signs, the volume of anechoic material appeared less than that seen in the acute cases. The overall appearance of the salivary mucocele was heterogenous. For dogs admitted after 2 months from the onset of clinical signs, the salivary mucocele appeared grainy or mottled, with a heterogenous appearance and a further decrease in anechoic content. For one dog that presented after 3 months from the onset of clinical signs, the salivary mucocele was hard on palpation and appeared hyperechoic with distal acoustic shadowing. Findings from this study indicated that ultrasonographic characteristics of salivary mucoceles in dogs vary depending on the chronological stage of the disease.
唾液腺黏液囊肿是犬下颌下肿胀的原因之一，是由于受损唾液腺漏出的黏液样唾液积聚所致。本病例系列报告的目的是描述开罗大学兽医学院收治的13只确诊唾液腺黏液囊肿犬的临床和超声特征。所有犬的唾液腺黏液囊肿最终诊断均基于抽吸细胞学检查，7只犬还进行了手术切除。对于临床症状出现后2周内至1个月内收治的犬，颈部黏液囊肿表现为圆形回声结构，中央有大量无回声内容物。囊壁是围绕腺体的清晰可见的高回声结构。对于临床症状出现后1至2个月内收治的犬，无回声物质的体积小于急性病例所见。唾液腺黏液囊肿的总体外观不均匀。对于临床症状出现后2个月后收治的犬，唾液腺黏液囊肿呈颗粒状或斑驳状，外观不均匀，无回声内容物进一步减少。对于1只临床症状出现后3个月就诊的犬，唾液腺黏液囊肿触诊坚硬，表现为高回声，伴有远端声影。本研究结果表明，犬唾液腺黏液囊肿的超声特征因疾病的病程阶段而异。
