Callum et al classified arteriomegaly based on findings seen on arteriography. Patients with arteriomegaly are at increased risk for aneurysmal and thrombus formation. The authors are from St. Thomas' Hospital in London.
Arteriomegaly involves enlargement of an artery in length and diameter.
Parameters seen on arteriograms:
(1) distribution of changes (absent vs localized vs generalized)
(2) dilation
(3) elongation with tortuous course
(4) stenosis or occlusions
Dilation
Elongation
Stenosis or Occlusions
Classification
none
none
none
normal
none
none
single or multiple
stenosing
generalized
generalized
NA
generalized arteriomegaly
some segments dilated, some normal
some segments elongated
single or multiple
localized arteriomegaly
none
some segments elongated
none
local tortuosity without dilatation
none
generalized
none
general tortuosity without dilatation
some segments dilated
none
NA
local dilatation without tortuosity
generalized
none
none
general dilatation without tortuosity
A patient found to have angiographic evidence of arteriomegaly should be evaluated to exclude aneurysm (using ultrasonography or computed tomography).
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