Page 788 - Equine Clinical Medicine, Surgery and Reproduction, 2nd Edition

Gastrointestinal system: 4.1 The upper gastrointestinal tr act 763

VetBooks.ir 4.85 4.86

Fig. 4.86 Oroscopic picture of a small sarcoma at
the caudal commissure under the oral mucosa.

Fig. 4.85 This adult horse has a large ossifying
fibroma in the ventral mandible.

4.87 4.88

Fig. 4.88 Severe ulcerative necrosis of the soft
palate with a squamous cell carcinoma.
Fig. 4.87 Non-healing ulcers on the lip margins can
signal squamous cell carcinoma.

(Fig. 4.86), squamous cell carcinomas (Figs. 4.87, Clinical presentation
4.88) and spindle cell tumours. Oral squamous cell Oral and dental tumours can present as asymmetric
carcinomas are rare in the horse but typically pro- swellings of the maxilla and mandible, which may
duce destruction of the mandible, resulting in loss be associated with masticatory disorders. They may
of mineral density and eventual periodontal disease also be detected incidentally or with investigation
and loosening of the teeth. of the signalment signs of dysmastication including