MS Rad 09-13 Congenital & Developmental Disorders

MS Rad 09-13 Congenital & Developmental Disorders -...

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Term: Achondroplasia Radiologic Features Definition: Shortening of long, tubular bones. Look at spine & pelvis Term: Achondroplasia Radiologic Features: Definition: skullnormal size, normal size brain Term: Achondroplasia Radiologic Features: face Definition: made of enchondral bone formation = small relative to the skull Term: Achondroplasia Radiologic Features: skull base Definition: enchondral bone formation = small --> hydrocephalus & paraplegia from constriction at base of skull & spine Term: Achondroplasia: lateral view of pelvis Definition: narrowing of interpediculate distance in the lumbar spine
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Term: Achondroplasia: lateral view of spine Definition: intervertebral disc spaces are widened & as high as the adjacent vertebral bodies. Short pedicles = spinal stenosis. Short pedicles & narrow vertebral canal. Bullet shaped vertebral bodies in the lumbar spine. posterior scalloping of the vertebral bodies. Slight kyphosis in lumbar spine. Term: Achondroplasia: Radiological Features of Bones Definition: proximal longs bones are shortened, short & thick tubular bones, notched (V-Shaped) growth plates creating ball-in-socket epiphyseal-metaphyseal junctions, flared metaphyses, fibular overgrowth Term: Achondroplasia: Hands & Feet Definition: short & stubby, with tips squared off. 2-4th fingers are = length. Term: Osteogenesis Imperfecta: Etiology Definition: Inadequate osteoid formation, normal mineralization. result is thin, osteoporotic, fragile bones with severe bowing & fxs. Trabecula is too lucent.
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Term: Osteogenesis Imperfecta: Type I
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