title: Eustachian tube diverticulum chondroids and neck abscessation in a case of Streptococcus equi subsp. equi.
abstract: A 12-year-old, grey, crossbred pony mare was presented with a swelling in the neck over the area of the 2nd cervical vertebra (C2), which was found to be painful on palpation. The neck was held stiffly. Radiography of the cervical region showed a focal area of increased radio-opacity over the dorsal, caudal and lateral aspect of the dorsal spinous process of C2. Ultrasound confirmed the presence of a hypoechoic area approximately 15 cm in diameter superimposed over the dorsal spinous process of C2. An aspirate was taken of the mass, which revealed purulent exudate confirming the diagnosis of an abscess. The abscess was lanced with a scalpel blade and samples of the purulent material revealed a pure culture of Streptococcus equi subsp. equi. The guttural pouches (Eustachian tube diverticulae (ETD)) were then evaluated endoscopically and multiple chondroids were seen filling most of the right ETD. Surgery was subsequently performed and 189 chondroids were removed via a right-sided hyovertebrotomy. The ETDs were flushed and penicillin installed into both ETDs on 3 different occasions via a catheter introduced using a fibre optic scope. This procedure was repeated until a negative culture status was achieved in order to eliminate the carrier status.
authors.affiliation: Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort 0110, South Africa.
authors.forename: C
authors.initials: C
authors.lastname: Furniss
authors.forename: A
authors.initials: A
authors.lastname: Carstens
authors.forename: I
authors.initials: I
authors.lastname: Cilliers
mesh_terms: D000038:Abscess / Q000175:diagnosis / Q000382:microbiology / Q000601:surgery / Q000662:veterinary*; D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D004240:Diverticulum / Q000175:diagnosis / Q000188:drug therapy / Q000601:surgery / Q000662:veterinary*; D004653:Empyema / Q000175:diagnosis / Q000188:drug therapy / Q000601:surgery / Q000662:veterinary*; D005064:Eustachian Tube / Q000473:pathology / Q000601:surgery; D005122:Exudates and Transudates / Q000382:microbiology; D005260:Female; D006734:Horse Diseases / Q000175:diagnosis* / Q000188:drug therapy / Q000601:surgery; D006736:Horses; D013290:Streptococcal Infections / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D018502:Streptococcus equi / Q000302:isolation & purification*; D007507:Therapeutic Irrigation / Q000662:veterinary; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents