Anabtawi et al classified pulmonary arteriovenous malformations. The authors are from the Medical College of Georgia and Eugene Talmadge Memorial Hospital in Augusta.
Parameters:
(1) multiple small arteriovenous fistulae
(2) large arteriovenous aneurysm
(3) large venous aneurysm
(4) anomalous venous drainage
Multiple Small AV Fistulae
Group
without aneurysm, without anomalous venous drainage
1
without aneurysm, with anomalous venous drainage
IIIC
Large AV Aneurysm
Group
peripheral, without anomalous venous drainage
II
central, without anomalous venous drainage
IIIA
with anomalous venous drainage
IIIB
Large Venous Aneurysm
Group
with systemic artery communication (anomalous arterial connection)
IVA
without fistula
IVB
Anomalous Venous Drainage
Group
without aneurysm or fistulae
V
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