1. Tracheal Obstruction in Chronic Lymphocytic Leukemia
Charles F. Winkler, M.D., Roberto Corpus, M.D. 
CHEST 
Volume 77, Issue 2, Pages (February 1980)
DOI: /chest b
Copyright © 1980 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Lateral tomogram of neck showing forward displacement of trachea by soft tissue mass (hollow arrows) with luminal narrowing (single solid arrow).
CHEST  , DOI: ( /chest b)
Copyright © 1980 The American College of Chest Physicians Terms and Conditions