VRU 2020

Question 1

What are the 3 most common locations for OCD in the equine tarsus in order from most common to less likely?

Answer 1

1) Distal intermediate ridge of tibia
2) Lateral trochlear ridge of the talus
3) Medial malleolus of tibia

Question 2

OCD of the distal intermediate ridge of the tibia in equine is most commonly diagnosed on which 2 radiographic projections?

Answer 2

Lateromedial

Dorso45medial-plantarolateral oblique (D45M-PLO)

Question 3

An atypical OCD lesion has been described in the tarsus of Thoroughbred horses, which radiographic view must be taken in order to visualize this lesion?

A) Lateromedial
B) Dorso45medial-plantarolateral oblique
C) Dorso10medial-plantarolateral oblique
D) Dorso10lateral-plantaromedial oblique

Answer 3

Answer = D

Question 4

T or F, early partial portal venous contrast enhancement is uncommonly seen in abdominal organs and may indicate an arterioportal vascular anomaly?

Answer 4

FALSE.

Early partial portal venous enhancement during the late arterial phase is a COMMON phenomenon of early portal venous drainage of abdominal organs and should NOT be interpreted as pathogonomic for arterioportal vascular anomalies.

Question 5

What 3 features are associated with arterioportal vascular anomalies?

Answer 5

1) Hepatofugal flow of contrast-enhanced portal blood
2) Equal distribution of contrast-enhanced blood within the aorta & cranial mesenteric vein during the arterial phase
C) Aneurysmal dilation of the portal branches