Theron Marie-Laure
Internal Medicine Service, City University of Hong Kong Veterinary Medical Centre, Sham Shui Po, Hong Kong.
JFMS Open Rep. 2024 Jul 25;10(2):20551169241261580. doi: 10.1177/20551169241261580. eCollection 2024 Jul-Dec.
An 8-month-old spayed female cat presented with a 7-week history of progressive dyspnoea, dysphagia and regurgitation. Plain radiography revealed megaoesophagus with a large, rounded, soft tissue opacity laryngeal mass. Endoscopic examination revealed a fluid-filled lesion, which was lanced and drained completely. As a result of recurrence of the mass and infection 2 days later, the mass was surgically excised. The mass was diagnosed as a laryngomucocele based on clinical and histopathological findings. Clinical signs resolved immediately after removal of the mass, the megaoesophagus resolved a couple of days postoperatively and no relapse was noted over the following 3 years.
To the author's knowledge, this is the first case of laryngomucocele described in a cat. This cause should be included in the differential diagnosis of respiratory obstruction and acquired megaoesophagus in cats. This report demonstrates that megaoesophagus resulting from a respiratory obstruction resolves spontaneously after removal of the obstruction; therefore, respiratory tract assessment should be recommended in cats with signs of megaoesophagus because the prognosis could be good compared with other causes of megaoesophagus.
一只8个月大已绝育的雌性猫出现了为期7周的进行性呼吸困难、吞咽困难和反流症状。X线平片显示食管扩张，伴有一个大的、圆形的、软组织密度的喉部肿物。内镜检查发现一个充满液体的病变，对其进行了切开引流。两天后，由于肿物复发和感染，对肿物进行了手术切除。根据临床和组织病理学检查结果，该肿物被诊断为喉黏液囊肿。肿物切除后临床症状立即消失，食管扩张在术后几天内恢复正常，在随后的3年里未发现复发。
据作者所知，这是第一例猫喉黏液囊肿的病例。在猫呼吸道梗阻和后天性食管扩张的鉴别诊断中应考虑到这种病因。本报告表明，由呼吸道梗阻引起的食管扩张在梗阻解除后可自行缓解；因此，对于有食管扩张症状的猫，建议进行呼吸道评估，因为与其他食管扩张病因相比，其预后可能较好。
