X 线胸片和CT 表现： 在X 线胸片上蜂窝的表现非常近似环影，典型的直径为3～10 mm，壁厚1～3 mm，类似蜂巢，所见提示为终末期肺病。在CT 上表现为成簇的囊状气腔，直径3～10 mm，但偶可达2．5 cm。蜂窝常位于胸膜下，有清楚的壁为其特征，它是一种可确定为肺纤维化的CT 征象。因为常认为蜂窝对诊断肺纤维化有特异性，故其是诊断寻常性间质性肺炎的重要标准，但对该术语的应用要慎重，因为它可能直接影响病人的治疗。
Pathology.—Honeycombing represents destroyed and fibrotic lung tissue containing numerous cystic airspaces with thick fibrous walls, representing the late stage of various lung diseases, with complete loss of acinar architecture. The cysts range in size from a few millimeters to several centimeters in diameter, have variable wall thickness, and are lined by metaplastic bronchiolar epithelium.
Radiographs and CT scans.—On chest radiographs, honeycombing appears as closely approximated ring shadows, typically 3–10 mm in diameter with walls 1–3 mm in thickness, that resemble a honeycomb; the finding implies end-stage lung disease. On CT scans, the appearance is of clustered cystic air spaces, typically of comparable diameters on the order of 3–10 mm but occasionally as large as 2.5 cm (Fig 1). Honeycombing is usually subpleural and is characterized by well-defined walls . It is a CT feature of established pulmonary fibrosis . Because honeycombing is often considered specific for pulmonary fibrosis and is an important criterion in the diagnosis of usual interstitial pneumonia , the term should be used with care, as it may directly impact patient care.
Figure 1: Transverse CT scan shows honeycombing.
本文编译于Fleischner Society: Glossary of Terms for Thoracic Imaging -- Hansell et al. 246 (3): 697 Figure 25 -- Radiology