Labrador with changed appearance

11	Please select an option

THIS CASE WAS PROVIDED BY....... Elsevier Health Sciences - North and Banks, Small Animal Oncology

Signalment: 9-year-old male neutered Labrador Retriever

Chief complaint: for the last three months he had not been eating well at home and would not eat dry food so the clients had changed him to tinned food. Two weeks ago the clients noticed the change in him that led to this consultation.

Physical Examination:

1

What did you find question, based on the photograph, when you examined this dog? Large mass on the maxilla causing facial deformity Swelling of the temporal muscles on the left side Muscle wasting over the entire head and face Muscle wasting of the temporal muscles on the right side Nothing: the dog looked normal Please select an option Incorrect. Look more closely at the photograph. Incorrect. Look more closely at the photograph. Incorrect. Look more closely at the photograph. Correct! Incorrect. Look more closely at the photograph.

2

What cranial nerve innervates this muscle? Facial Trigeminal Abducens Hypoglossal Oculomotor Please select an option Incorrect. Review anatomy and choose again. Correct. Incorrect. Review anatomy and choose again. Incorrect. Review anatomy and choose again. Incorrect. Review anatomy and choose again.

3

You examine the dog further and can feel a large mass located at the caudal part of the ramus of the mandible. When you open his mouth you see a large tumour. What is the most common oral tumour seen in the dog? Osteosarcoma Squamous cell carcinoma Malignant melanoma Amelioblastoma Fibrosarcoma Please select an option Incorrect. Review oral tumours and choose again. Incorrect. Review oral tumours and choose again. Correct. Incorrect. Review oral tumours and choose again. Incorrect. Review oral tumours and choose again.

4

Based on your knowledge of oral tumours which of the above carries the best prognosis (i) and which carries the worst prognosis (ii)? (i) Amelioblastoma, (ii) fibrosarcoma (i) Squamous cell carcinoma, (ii) malignant melanoma (i) Fibrosarcoma, (ii) osteosarcoma (i) Malignant melanoma, (ii) amelioblastoma (i) Amelioblastoma, (ii) malignant melanoma Please select an option Incorrect. Review oral tumours and choose again. Incorrect. Review oral tumours and choose again. Incorrect. Review oral tumours and choose again. Incorrect. Review oral tumours and choose again. Correct