what is a broad levoconvex thoracolumbar curvature?
Levoconvex thoracolumbar curvature is the deforming of lateral curve of the spine that may also affect other regions of the spine. In short the general term that is known is scoliosis. As it progresses, it makes one side separated and the other side closed together on the ribs. See http://www.rad.washington.edu/academics/academic-sections/msk/teaching-materials/online-musculoskeletal-radiology-book/scoliosis for details.
A wide curve that curves outwards and has levers and heaters on it.