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Open Access Highly Accessed Original research article

HRCT findings of pulmonary sarcoidosis; relation to pulmonary function tests

Fatih Ors1*, Seyfettin Gumus2, Mehmet Aydogan2, Sebahattin Sari1, Samet Verim3 and Omer Deniz2

Author Affiliations

1 Department of Radiology, Gulhane Military Medical Academy, Ankara, Etlik, 06010, Turkey

2 Department of Pulmonary Medicine, Gulhane Military Medical Academy, Ankara, Etlik, 06010, Turkey

3 Mevki Military Hospital, Radiology Service, Ankara, Diskapi, Turkey

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Multidisciplinary Respiratory Medicine 2013, 8:8  doi:10.1186/2049-6958-8-8

Published: 5 February 2013

Abstract

Background

Chest-X-ray has several limitations in detecting the extent of pulmonary disease in sarcoidosis. It might not reflect the degree of pulmonary involvement in patients with sarcoidosis when compared to computed tomography of the thorax. We aimed to investigate the HRCT findings of pulmonary sarcoidosis and to find out the existence of possible relations between HRCT findings and PFTs. In addition, we aimed to investigate the accordance between HRCT findings and conventional chest-X-ray staging of pulmonary sarcoidosis.

Method

45 patients with sarcoidosis with a mean age 29.7+/− 8.4 years were evaluated. Six of them were female and 39 were male. The type, distribution and extent of the parameters on HRCT/CTs were evaluated and scored. Chest-X-rays were evaluated for the stage of pulmonary sarcoidosis. Correlations were investigated between HRCT/CT parameter scores, Chest X-Ray stages and pulmonary function parameters.

Results

Nodule, micronodule, ground glass opacity and consolidation were the most common HRCT findings. There were significant correlations between pulmonary function parameters, HRCT pattern scores, and chest-X-ray stages. A significant correlation between chest-x-ray score and total HRCT score was found.

Conclusions

Pulmonary sarcoidosis patients might have various pulmonary parenchymal changes on HRCT. Thorax HRCT was superior to chest-X-ray in detecting pulmonary parenchymal abnormalities. The degree of pulmonary involvement might be closely related to the loss of pulmonary function measured by PFTs. Chest-X-ray is considered to have a role in the evaluation of pulmonary sarcoidosis.