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Figure 1: Chest X-ray showing severe kyphoscoliosis with Cobb's angle of 75° and hypoplasia of the left lung. Cobb's angle is derived by drawing intersecting perpendicular lines from the superior surface of the superior end vertebra and from the inferior surface of the inferior end vertebra. The angle of deviation of these perpendicular lines from the straight line is the Cobb's angle

Figure 1: Chest X-ray showing severe kyphoscoliosis with Cobb's angle of 75° and hypoplasia of the left lung. Cobb's angle is derived by drawing intersecting perpendicular lines from the superior surface of the superior end vertebra and from the inferior surface of the inferior end vertebra. The angle of deviation of these perpendicular lines from the straight line is the Cobb's angle