An undiscussed distribution of chest X-ray findings in pulmonary tuberculosis

Chest X-Ray is a paramount important investigation in Pulmonary Tuberculosis (PTB). We here explain a common observation of distribution of X-Ray findings in PTB which has not been previously discussed. When the disease is bilateral and extensive, we have noted that in most of the patients the left lung is involved extensively while the right lung is less extensively involved with limitation to upper zone. The reverse pattern is rarely noted. The potential pathogenesis for this would be the differences of the anatomy of the bronchia tree, lymphatics, and the blood vessels.