RADD 2712 Skeletal Radd B Study Guide Answers 1-50

RADD 2712 Skeletal Radd B Study Guide Answers 1-50 - Yochum...

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Answers looked up in the textbook by Melanie Carr, verified by the Answer Key in the Study Guide 1Q.A periosteal reaction of “trimmed whiskers” - very thin, fairly short spicules of reactive new bone - is most typical of: ANSWER: C - Ewing’s Sarcoma * Parosteal sarcoma has no noted periosteal reaction since it grows very slowly. * Central osteosarcoma commonly is sunburst, sometimes Codman’s Δ. * Ewing’s Sarcoma presents onion skin classically, and occasionally trimmed whiskers. * Chondrosarcoma presents with laminated or spiculated periosteal reaction. 2Q.In male patients, the primary source of skeletal metastasis is a primary tumor in the: ANSWER: D - Prostate * Colon metastasis to the skeleton isn’t even on the top of the list * Kidney metastasis to the skeleton is after breast in women, with thyroid and uterus * Lung metastasis to the skeleton is the other 25% after prostate. * Prostate is responsible for 60% of all skeletal metastasis in men. 3Q.The pathognomic lesion seen in the metastasis of neuroblastoma to the skull is: ANSWER: C - a soft tissue mass with sunburst speculation of the skull tables. * Widening of the sutures is not pathognomic, but is seen in neuroblastoma mets. * Multiple, diffuse, symmetric lucencies is seen in multiple myeloma * Skull deposits widen the sutures and create a classic sunburst speculation of the skull tables, which is virtually pathognomic of mets neuroblastoma. * Scalloped geographic lesions in the calvarium could point toward Hemangioma or nonossifying fibromas, even though it isn’t usually found in the skull. 4Q.In both the cervical and thoracolumbar spine, neurofibromas may cause: ANSWER: B - enlargement of the IVF caused by erosion of the pedicle and posterior body.
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* We did not cover neurofibromas 5Q.Paget’s disease may be radiographically distinguished from fibrous dysplasia because Paget’s will commonly have: ANSWER: D - Subarticular long bone lesions * A hazy, “ground glass” appearance is classic for fibrous dysplasia. * Pseudofractures go along with osteomalacia, versus pathological fractures which commonly are seen in Paget’s. * Bowing deformities in the long tubular bones - think soft bones, osteomalacia or Rickets 6Q.The typical radiologic appearance of a periosteal chondroma includes a classic triad of: ANSWER: B - cortical scalloping, overhanging bony edges, and a calcified, cartilaginous matrix. * Endosteal scalloping would put this more in the chondroblastoma category * A distinct soft tissue mass can be seen in periosteal chondroma, but is not “typical”. * Eccentric bone expansion would make me think sessile osteochondroma or giant cell 7Q.Clinically, aneurysmal bone cysts: ANSWER: C - are characterized by acute onset of local pain, which rapidly increases in severity. * Silent means asymptomatic, think benign tumors with malignant degeneration
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RADD 2712 Skeletal Radd B Study Guide Answers 1-50 - Yochum...

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