There were few IC (0.00–0.3 mg/mL) measurements and MVD counts (0.00–3 vessels/HPF) in the solid and cyst components of HAE lesion, and no intact vascular structures were found in CD34-expressing regions In addition, the contrast medium uptake focused primarily on the perilesional area of HAE lesions, which is consistent with the location of contrast enhancement in imaging studies. Here, CD34 is linked to cyst.