Bone Pathology

For each of the following patients, select the most likely pathologic finding:

1. An 82-year-old woman is noted to have had back pain for the past month, and a plain film radiograph of the spine reveals decreased height of both the T11 and T12 vertebrae, but no mass lesions are seen:

2. A 5-year-old girl with blue sclerae has deformities of her extremities marked by many healing fractures of various ages in multiple long bones:

3. A 72-year-old man has developed Bell's palsy over the last 2 months with facial droop on the left side:

4. There are multiple lytic lesions from 0.5 to 3 cm in size noted in the skull and vertebrae on plain film radiographs of a 58-year-old man:

5. A 20-year-old man exhibits dwarfism, with short arms and legs, but his head and trunk appear normal in size. He has no major medical problems:

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A. Achondroplasia B. Aneurysmal bone cyst C. Chondrosarcoma D. Ewing sarcoma E. Fibrous dysplasia
F. Fracture, healing G. Giant cell tumor H. Metastatic adenocarcinoma I. Multiple myeloma J. Osteitis fibrosa cystica
K. Osteoid osteoma L. Osteomalacia M. Osteochondroma N. Osteogenesis imperfecta O. Osteomyelitis
P. Osteonecrosis Q. Osteoporosis R. Osteosarcoma S. Paget disease T. Pott disease


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