Rocks are either classified as sedimentary, igneous or metamorphic, depending on the manner in which they were formed. Most rocks encountered in everyday life are sedimentary, although some igneous rocks, such as granite, are also common.
Neuromuscular scoliosis encompasses scoliosis that is secondary to neurological or muscular diseases. This includes scoliosis associated with cerebral palsy, spinal cord trauma, muscular dystrophy, spinal muscular atrophy and spina bifida.
That is the textbook definition of levoscoliosis, but the simple and easy explanation is the following: while scoliosis refers strictly to the curvature of the spine, one direction or another (including left, right, forward and backward), levoscoliosis is the particular name for scoliosis with a left side curvature.