Radiation Fibrosis : Differentiation from True Hilar Mass on Plain Chest Film.
10.3348/jkrs.1996.34.3.381
- Author:
Jun Hyun BAIK
1
;
Kook Jin AHN
;
Seog Hee PARK
;
Kyung Sub SHINN
Author Information
1. Department of Diagnostic Radiology, Catholic University Medical College, Korea.
- Publication Type:Original Article
- Keywords:
Lung, fibrosis;
Radiation, injurious effects;
Lung neoplasms;
Lung, radiography
- MeSH:
Aorta;
Arteries;
Diagnosis, Differential;
Fibrosis;
Heart;
Humans;
Lung Neoplasms;
Mediastinum;
Pulmonary Artery;
Radiation Pneumonitis*;
Radiography, Thoracic;
Thorax*
- From:Journal of the Korean Radiological Society
1996;34(3):381-385
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: Radiation-induced fibrotic mass might masquerade as a true hilar tumor mass on a plain chest radiograph. We attempted to differentiate radiation fibrosis from a true hilar tumor using only a plain radiograph. MATERIALS AND METHODS: Plain chest radiographs were obtained from seven patients who had developed radiation fibrosis simulating hilar mass after radiation therapy for lung cancer, and from 19 patients with lung cancer, a comparison group, who had not received radiation therapy. They were reviewed for the obliteration of the overlapped mediastinal and hilar anatomical silhouettes by the mass : pulmonary artery, heart or aorta border, and paraspinal line. RESULTS: All seven patients with radiation-induced fibrotic mass(bilateral lesion in twopatients) showed obliteration of all three overlapped anatomical silhouettes of the mediastinum and hilum on chestradiographs. in the comparison group of 19 patients with a true hilar mass, there was, however, no case which demonstrated obliteration of all landmarks. CONCLUSION: Obliteration of all anatomical landmarks at the hilum and mediastinum may be a helpful clue in the differential diagnosis of radiation-induced fibrotic mass from true hilarmass on a plain radiograph, particularly when clinical information on previous radiation therapy is unavailable.
