tvpjournal.com | November/December 2015 | ToDay's VeTeriNary PracTice
aHs HearTWorM HoTLiNe Peer reviewed
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FIGURE 7. Active thrombosis secondary to
a dead heartworm (a); adult worms with
active clotting, reorganizing emboli, and well
organized area of fbrosis representing 3
separate events (B); organized obstruction in
a distal pulmonary artery containing necrotic
heartworm remnants and debris (C).
A
b
C
FIGURE 4. Adult heartworms occupying the
lumen of a smaller branch of the pulmonary
artery.
FIGURE 5. Severe endothelial proliferation
and rufus endarteritis secondary to heartworm
infection.
FIGURE 8. Vascular fbrosis (arrows) found in a
dog presented with caval syndrome. Interestingly,
only 6 worms were present, 5 of which were
located in the right heart and vena cava.
FIGURE 6. Dead heartworm embolism
obstructing distal pulmonary artery; note the
surrounding fbrosis indicating a previous insult
( arrows).