1. SMALL ANIMAL RADIOLOGY CASE DISCUSSIONS Sarah Jones, DVM

2. CASE 1 11 YO MN Beagle Acute onset pelvic limb lameness

5. WHAT WOULD YOU RECOMMEND?

6. DIAGNOSTICS/OUTCOME Ultrasound guided bone aspirate was inconclusive Recommended bone scan to rule out other polyostotic lesions Ultimately amputation

7. CASE 2 3 month old M Boxer Chronic history of vomiting and diarrhea Acute worsening 2 days ago

11. WHAT WOULD YOU RECOMMEND?

12. DIAGNOSTICS/OUTCOME

14. CASE 3 3 YO MN GSD 6 month history of back pain

18. WHAT WOULD YOU RECOMMEND?

19. DIAGNOSTICS/OUTCOME Abdominal ultrasound Suspected pyelonephritis and ureteritis. Aortic wall thickening and thrombosis Sublumbar lymphadenopathy FNA sublumbar lymph nodes Cytology: Neutrophilic inflammation with fungal sepsis Aspergillus Ag Positive Cryptococcus Negative Urine cultured fungal organisms

20. ANOTHER EXAMPLE: DISCOSPONDYLITIS

24. CASE 4 1 YO FS Pit Bull Vomiting

29. WHAT WOULD YOU RECOMMEND?

30. ULTRASOUND

34. DIAGNOSIS/OUTCOME ULTRASOUND: Retroperitoneal effusion Cytology: Neutrophilic exudate with hemorrhage and lipid, no infectious organisms seen OUTCOME: Discharged home with supportive pain management

35. CASE 5 7 YO MN Chihuahua Chronic cough

39. CASE 6 6 MO FS DSH Respiratory distress

43. DIAGNOSIS/OUTCOME Pneumothorax, likely tension pneumothorax Therapeutic thoracocentesis Supportive care: Pain medication, antibiotics, IVF

44. ANOTHER EXAMPLE: PNEUMOTHORAX

47. QUESTION 1 What are some radiographic features of aggressive osseous lesions? 1.Cortical disruption 2.Permeative osteolysis 3.Long zone of transition 4.Interrupted, irregular periosteal reaction 5.Poorly demarcated 6.Rapid rate of change

48. WHICH FEATURES OF THIS LESION COULD BE CHARACTERIZED AS AGGRESSIVE?

49. QUESTION 2 What are your differentials for diffusely dilated small intestines? 1.Functional ileus (e.g. enteritis) 2.Distal mechanical obstruction (e.g. foreign body, distal annular neoplasia) What does a “gravel sign” indicate? 1. Chronic, partial obstruction

50. QUESTION 3 What are a few radiographic differences between spondylosis deformans and discospondylitis? Discospondylitis: Vertebral end plate irregularity/lysis with surrounding sclerosis Spondylosis deformans: No end plate lysis. Smoothly marginated periosteal new bone bridging vertebral bodies usually along the ventral and lateral aspects.

51. QUESTION 4 How does retroperitoneal effusion appear radiographically? Border effacement of the kidneys, soft tissue opacity within the retroperitoneal space, ventral deviation of the colon

52. QUESTION 5 Define tension pneumothorax. How does it differ from a “routine” pneumothorax on radiographs? Tension pneumothorax: Progressive build-up of air within the pleural space without escape of air. On radiographs, tension pneumothorax results in mediastinal shift with collapse of the ipsilateral lung and compression of the contralateral lung.

53. THANK YOU!! Questions? FEEL FREE TO EMAIL ME WITH SUGGESTIONS FOR NEXT TIME