MIKE DEVLIN / SCIENCE PHOTO LIBRARY MIKE DEVLIN / SCIENCE PHOTO LIBRARY
Rib hump caused by scoliosis. Person bending forward to show how scoliosis has produced an abnormal hump shape (upper right) in their ribcage. Scoliosis is an abnormal lateral (side-to-side) curvature of the spine causing it to take on more of an S or C-shape than the usual straight line.
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