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解剖学：：其特征是沿着或邻近肺内淋巴管分布。淋巴管路径是指沿支气管血管束、在小叶间隔内、围绕着大的肺静脉和在胸膜内，而肺泡无淋巴管。JJg影像园XCTMR.com
CT 表现：病变沿肺淋巴管路径，即位于肺门周围、支气管血管周围和小叶中心性间质及小叶间隔和胸膜下，均为淋巴管周围分布。典型的淋巴管周围分布见于结节病和癌的淋巴管播散。JJg影像园XCTMR.com Anatomy.—This pattern is characterized by distribution along or adjacent to the lymphatic vessels in the lung. The routes of lymphatics are found along bronchovascular bundles, in the interlobular septa, around larger pulmonary veins, and in the pleura; alveoli do not have lymphatics. JJg影像园XCTMR.com CT scans.—Abnormalities along the pathway of the pulmonary lymphatics—that is, in the perihilar, peribronchovascular, and centrilobular interstitium, as well as in the interlobular septa and subpleural locations—have a perilymphatic distribution . A perilymphatic distribution typically seen in sarcoidosis (Fig 1) and lymphangitic spread of cancer. JJg影像园XCTMR.com  JJg影像园XCTMR.com
Figure 1 ：Transverse CT scan shows sarcoidosis with a perilymphatic distribution.JJg影像园XCTMR.com (本文编译参考自Fleischner Society: Glossary of Terms for Thoracic Imaging -- Hansell et al. Radiology 2008;246:697-722.仅供学习交流之用,转载请注明源于影像园http://www.xctmr.com/)JJg影像园XCTMR.com
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