Final answer:
Scoliosis is best described as a lateral curvature of the spine, commonly occurring in adolescent girls, with treatment ranging from monitoring to surgery based on its severity.
Step-by-step explanation:
The nurse's best description of scoliosis would be, "It is a lateral curvature of a portion of the spine." Scoliosis involves an abnormal, lateral curvature of the vertebral column, often accompanied by a twisting motion. This condition may also result in compensatory curves in other parts of the spine to maintain overall balance. Scoliosis is most commonly found among adolescent girls, and while its exact cause is often unknown, it can arise due to factors like muscle weakness, growth rate discrepancies between the sides of the vertebral column, or limb length differences. Treatment varies based on the severity, from observation and back braces to surgery in severe cases.