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Figure 7a.   Multiple arteriovenous malformations in a 23-year-old woman with hereditary hemorrhagic telangiectasia. Contiguous chest CT scans reveal multiple small nodular areas of increased attenuation bilaterally with enlarged feeding and draining vessels, findings that are diagnostic for arteriovenous malformations. A chest radiograph obtained earlier (not shown) demonstrated a possible small solitary pulmonary nodule in the right lower lobe.