J Korean Med Sci.  1997 Dec;12(6):492-498. 10.3346/jkms.1997.12.6.492.

Idiopathic pulmonary fibrosis vs. pulmonary involvement of collagen vascular disease: HRCT findings

• Lim MK
• Im JG
• Ahn JM
• Kim JH
• Lee SK
• Yeon KM
• Han MC

• KMID: 645108
• DOI: http://doi.org/10.3346/jkms.1997.12.6.492

Abstract

The purpose of this study is to assess the differences of high-resolution CT (HRCT) findings in patients with idiopathic pulmonary fibrosis (IPF) and pulmonary involvement of collagen vascular disease (CVD). We analyzed the HRCT findings of 33 patients with IPF and 23 patients with CVD in terms of predominant pattern, site of involvement, mediastinal lymph node enlargement, pleural change, and pulmonary volume loss. The predominant HRCT pattern was honeycombing for IPF (58%), and ground-glass opacity for CVD (57%). Predominantly subpleural involvement was seen in 90% of IPF and 83% of CVD patients. Mediastinal lymph node enlargement was seen in 61% of the patients with IPF and 13% with CVD (p = 0.0004). Pleural thickening was seen in 97% of the patients with IPF and 35% with CVD and the severity of pleural thickening is statistically significant (p = 0.00001). Pleural effusion was seen in 6% of the patients with IPF and 26% with CVD (p = 0.0351). The hilar height ratio was more than 1.5 in 52% of the patients with IPF and 30% with CVD (p = 0.2620). Although HRCT findings of IPF and pulmonary involvement of CVD are similar and overlap considerably, but patients with IPF showed a tendency to more progressed fibrosis than patients with CVD.

MeSH Terms

Adult
Aged
Aged, 80 and over
Collagen Diseases/radiography*
Female
Human
Lung/physiopathology
Lung/pathology*
Lung Compliance
Lymph Nodes/pathology
Male
Middle Age
Pleura/pathology
Pleural Effusion/pathology
Pulmonary Fibrosis/radiography*
Pulmonary Fibrosis/etiology
Tidal Volume
Tomography, X-Ray Computed
Vascular Diseases/radiography*