In 6 cases with chronic obstructive airway diseases, the GGO located centrally or peripherally, and most of them had a mosaic pattern with dilatation of vessels in the center of GGO.

• 慢性阻塞性肺疾病6例，磨玻璃密度阴影可呈外周或中央性分布，一般都有马赛克样分布和病灶区小血管增粗的表现。