Accuracy of high resolution CT in assessing idiopathic pulmonary fibrosis histology by objective morphometric index

被引:16
作者
Schettino, IAL
Ab'Saber, AM
Vollmer, R
Saldiva, PHN
Carvalho, CRR
Kairalla, RA
Capelozzi, VL
机构
[1] Univ Sao Paulo, Sch Med, Dept Pathol, BR-01246903 Sao Paulo, Brazil
[2] Univ Sao Paulo, Sch Med, Heart Inst InCor, Div Resp Dis, BR-05508 Sao Paulo, Brazil
[3] Duke Univ, Med Ctr, Dept Pathol, Durham, NC 27706 USA
[4] Duke Univ, Med Ctr, VA Med Ctr, Lab Med, Durham, NC 27706 USA
基金
巴西圣保罗研究基金会;
关键词
computed tomography; high-resolution CT; usual interstitial pneumonia; idiopathic pulmonary fibrosis; morphometry; lung biopsy;
D O I
10.1078/0344-0338-00265
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
To determine the accuracy of HRCT in assessing histology by objective morphometric index, twenty-five biopsy specimen-proved UIP were correlated with high-resolution CT (HRCT) by morphometric analysis. The scans were evaluated for the presence and extent of normal parenchyma, ground-glass attenuation, linear opacities. consolidation, honeycombing, vessels and bronchiectasis. and overall extent of histology involvement for normal parenchyma, honeycombing, alveolar septal inflammation, fibrosis, vessels, and bronchiectasis/bronchiolectasis. The comparison between morphometric measurements showed a strong correlation between HRCT and histologic parameters for extension (%) of normal tissue (p = 5 x 10(-5)), honeycombing (p = 6 x 10-5), and vessels (p = 0.0047). HRCT consolidation strongly correlated with alveolar septal inflammation (p = 0,01). whereas HRCT linear opacities had the highest correlation with histology for bronchiectasis or bronchiolectasis (p = 0.03). These associations also demonstrated that there was considerable residual scatter about the linear relationships found. By contrast, neither the ground glass patterns nor the bronchioectatic patterns determined by CT were associated with any histologic observation (p < 0.1). There was a borderline negative relationship between vessels deter-mined by CT and histologic fibrosis (p = 0.069), i.e., the percentage of vessel patterns determined by CT was found to be lower when fibrosis was prominent histologically. Our results showed that HRCT patterns, usually employed to provide information about activity (ground glass) and fibrosis (consolidation) in IPF, failed to correlate with histology. On the other hand, chronic cystic lesions had a good correlation with histology. This finding suggests that in patients without a diffuse honeycomb pattern on HRCT, a lung biopsy may provide additional information. The more important limitation of our study was the lack of correlation related to the proximity of the biopsy site to the HRCT location evaluated by morphometry.
引用
收藏
页码:347 / 354
页数:8
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