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病理学表现：机化性肺炎的组织学表现为气腔和远侧气道内有松软的结缔组织栓，轻度或无间质yUg影像园XCTMR.com
炎症和纤维化，隐原性机化性肺炎（COP）是特发性间质性肺炎中一种明确的临床疾病，但在许多不同的病变中（包括肺感染、过敏性肺炎和胶原血管病等）可见到机化性肺炎的组织学改变。yUg影像园XCTMR.com
X 线胸片和CT 表现：气腔实变为基本表现，在COP 病例中， 典型的病变分布在胸膜下和基底部，有时为支气管中心性分布。机化性肺炎的其他表现有磨玻璃密度影、树芽征和结节影。yUg影像园XCTMR.com Pathology.—Organizing pneumonia manifests as a histologic pattern characterized by loose plugs of connective tissue in the airspaces and distal airways. Interstitial inflammation and fibrosis are minimal or absent. Cryptogenic organizing pneumonia, or COP, is a distinctive clinical disorder among the idiopathic interstitial pneumonias , but the histologic pattern of organizing pneumonia is encountered in many different situations, including pulmonary infection, hypersensitivity pneumonitis, and collagen vascular diseases. yUg影像园XCTMR.com Radiographs and CT scans.—Airspace consolidation is the cardinal feature of organizing pneumonia on chest radiographs and CT scans. In COP, the distribution is typically subpleural and basal (Fig 1) and sometimes bronchocentric. Other manifestations of organizing pneumonia include ground-glass opacity, tree-in-bud pattern, and nodular opacities . yUg影像园XCTMR.com  Figure 1: Transverse CT scan shows cryptogenic organizing pneumonia with subpleural and basal distribution.(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/)yUg影像园XCTMR.com
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