Which of the following diseases is most radiographically similar to pyknodysostosis?

Question

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Osteopetrosis, also known as marble bone disease, is a rare genetic disorder that causes the bones to become abnormally dense and thick. The radiographic findings of osteopetrosis are similar to those of pyknodysostosis, with increased bone density and cortical thickening. Scheuermann disease is characterized by kyphosis and anterior wedging of the vertebrae, while osteogenesis imperfecta is characterized by brittle bones and fractures. Van Buchem disease is a type of osteosclerosis that affects the skull and facial bones, but is not radiographically similar to pyknodysostosis.

Which of the Following Diseases Is Most Radiographically Similar to Pyknodysostosis