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nonpainful rostral mandibular swelling. The referring veterinarian saw the patient 2 weeks prior for a progressively growing lesion affecting the rostral mandible and halitosis. The physical examination revealed signs of periodontal disease, such as

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in Journal of the American Veterinary Medical Association

History and Physical Examination Findings A 2.5-year-old 38.5-kg (84.7-lb) castrated male German Shepherd Dog presented to a veterinary medical teaching hospital (VMTH) urgent care due to concerns for right mandibular swelling. Three weeks

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in Journal of the American Veterinary Medical Association

swelling and unsatisfactory response to treatment. Hematologic analysis was performed again, revealing no clinically important changes. The mandibular swelling had reduced in size but remained prominent. Purulent material could be expelled, and the abscess

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in Journal of the American Veterinary Medical Association

Abstract

OBJECTIVE

To describe clinical and imaging features and surgical treatment of equine mandibular aneurysmal bone cysts (ABCs) with β-tricalcium phosphate (TCP).

ANIMALS

3 horses (cases 1, 2, and 3) and 1 pony (case 4) with histologically confirmed ABC.

CLINICAL PRESENTATION

All cases had mandibular swelling with intact adjacent skin. Cases 1 to 3 had a body condition score of 3/5 and case 4 had 2/5 and showed quidding during mastication and, at oral examination, large interdental spaces and loose elements adjacent to the swelling. Radiography or CT was performed in all cases. In cases 1, 3, and 4, an expansile septate cystic space-occupying lesion with mass effect on the adjacent cortices and teeth was seen without compact bone destruction. Case 2 showed a heterogeneous osteolytic mass with multifocal cortical lysis and interruption. Case 4 had severe dental abnormalities of deciduous and precursors of permanent teeth. ABCs were surgically treated and filled with only TCP (case 3) or in combination with autologous bone marrow (cases 1, 2, and 4).

RESULTS

Cases 1 through 3 showed an uneventful reduction in ABC size with increased opacity/attenuation. In case 4, a surgical site infection occurred. After removal of TCP remnants, the ABC healed satisfactorily, but remaining dental abnormalities necessitated dietary adjustments to maintain an acceptable body condition score.

CLINICAL RELEVANCE

Treatment of ABCs with TCP had a favorable outcome and good long-term prognosis. In young specimens, the expansile effect on the development and eruption of neighboring teeth can influence and determine final functionality of the diseased dental quadrant.

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in Journal of the American Veterinary Medical Association

History and Physical Examination Findings A 6-year-old Swedish Warmblood gelding was evaluated by the referring veterinarian because of right mandibular swelling of 24 hours' duration. The horse was having difficulty eating and was evasive

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in Journal of the American Veterinary Medical Association

History A 26-year-old 422-kg Arabian mixed-breed gelding was referred for evaluation of a left mandibular swelling that had progressively grown following extraction of multiple mandibular cheek teeth approximately 5 weeks earlier when the

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in Journal of the American Veterinary Medical Association
Authors and

, 9 who found that the diagnosis in cats with mandibular swellings should be based on results of oral radiography coupled with results of histologic examination. References 1. Dobson H Friedman L . Radiologic interpretation of bone

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in Journal of the American Veterinary Medical Association
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involving the left thoracic limb, the dog was reported to be otherwise healthy. The referring veterinarian had prescribed amoxicillin trihydrate–clavulanate potassium (6.25 mg/kg [2.8 mg/lb], PO, q 12 h) for treatment of mandibular swelling; the dog was also

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in Journal of the American Veterinary Medical Association

the lesions frequently stops at approximately 1 year of age, coinciding with cessation of physeal activity, and lesions may regress or resolve completely. 3 Clinical signs may include mandibular swelling, drooling, difficulty with prehension, moderate

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in Journal of the American Veterinary Medical Association

onset of mandibular swelling, ptyalism, and hyporexia. Radiography revealed soft tissue swelling with osteolucency around the mandibular incisor roots in both wallabies; CT revealed changes consistent with chronic active mandibular osteomyelitis and

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in Journal of the American Veterinary Medical Association