A 69-year-old man has an abnormally Increased Curvature of the Thoracic Veebral Column. Which of the following conditions is the most likely diagnosis?

Kyphosis (hunchback or humpback) is an abnormally increased Thoracic Curvature, usually resulting from osteoporosis. Lordosis is an abnormal accentuation of the Lumbar Curvature. Spina bifida occulta is failure of the veebral arch to fuse (only bony defect). Meningocele is a protrusion of the meninges through the unfused arch of the veebra, whereas meningomyelocele is a protrusion of the spinal cord and the meninges.