Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Chapter Five The Skull 649
Fig. 5-45 A 6-year-old female
Miniature Poodle with chronic gingivitis.
The lateral oblique radiograph,
isolating the right mandible,
revealed generalized resorption of
bone from the mandible. This is particularly
prominent between the
teeth and around the roots (white
arrow). Diagnosis: Gingivitis and
periodontitis.
Fig. 5-46 A 7-year-old female domestic short-haired cat with a swelling
around the root of the left canine tooth. The open-mouth ventrodorsal view
revealed a large bony mass involving the maxilla in the area of the alveolus for
the canine tooth root. The left canine tooth is displaced cranially and the root
is shortened. These findings are consistent with chronic infection within the
alveolus. Diagnosis: Chronic infection causing lysis of the root tip and
expansion of the alveolar bone of the left canine tooth.
Fig. 5-47 A 9-year-old neutered female Cocker Spaniel with reluctance to eat and drooling for 3
weeks. The lateral oblique radiograph, isolating the right maxilla, revealed a large area of bony lysis
involving the maxilla from the canine tooth to the fourth premolar. It also revealed a focal area of
lysis around the caudal root of the fourth premolar (black arrows). Differential diagnoses for the
major lesion include squamous cell carcinoma, primary bone tumor, melanoma, and metastatic
tumor. Diagnosis: Squamous cell carcinoma of the rostral maxilla and periapical abscess of the caudal
root of the fourth premolar.