Imaging Studies for Bone Tumors Quiz
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Questions and Answers

What is the primary characteristic of the periosteal response seen with malignant bone tumors?

  • Sclerotic ring expansion and cortical thinning
  • Ill-defined margins and loss of the cortical barrier (correct)
  • Rapid growth and permeative/moth-eaten destruction of the transitional zone
  • Well-defined margins surrounding the lesion
  • Where is the location of origin for most bone lesions?

  • Diaphyseal
  • Epiphyseal
  • Metaphyseal (correct)
  • The lesion can originate from any part of the bone
  • How do benign bone tumors typically affect the surrounding bone?

  • Well-defined margins with a sclerotic ring surrounding the lesion (correct)
  • Rapid, permeative destruction of the bone
  • Ill-defined margins with loss of the cortical barrier
  • Expansion of the bone with cortical thinning
  • What radiographic characteristic can sometimes point to a specific type of bone tumor?

    <p>Specific characteristic features</p> Signup and view all the answers

    How do malignant bone tumors typically affect the surrounding bone?

    <p>Rapid, permeative destruction with loss of the transitional zone</p> Signup and view all the answers

    What is the best imaging study to define the extent of many tumors?

    <p>MRI</p> Signup and view all the answers

    Which imaging study is ideal for evaluating cortical continuity in bone lesions?

    <p>CT scan</p> Signup and view all the answers

    What is a characteristic feature of bone lesions observed through bone scans?

    <p>Hot spots</p> Signup and view all the answers

    What is the diagnostic accuracy of closed biopsy techniques for bone tumors?

    <p>~70-80%</p> Signup and view all the answers

    In Enneking staging system, what does 'T0' indicate about the local extension of a bone tumor?

    <p>No local extension</p> Signup and view all the answers

    Which type of bone tumor resection is considered the gold standard for malignant bone tumors?

    <p>Radical resection</p> Signup and view all the answers

    What is the key difference between wide resection and radical resection for bone tumors?

    <p>Wide resection leaves behind microscopic tumor, while radical resection removes the entire bone.</p> Signup and view all the answers

    What percentage of patients with metastatic bone disease have distant nonpulmonary metastases?

    <p>Approximately 10%</p> Signup and view all the answers

    Which type of bone lesion is associated with a reactive zone surrounding the tumor?

    <p>Chondrosarcoma</p> Signup and view all the answers

    What type of radiographic finding is associated with periosteal reaction in bone lesions?

    <p>Mixed osteoblastic and osteolytic</p> Signup and view all the answers

    Which of the following best describes the location of a bone lesion that involves the cortex and medullary cavity, with a periosteal reaction?

    <p>Eccentric lesion</p> Signup and view all the answers

    If a bone lesion causes cortical destruction and periosteal elevation, what type of periosteal reaction is likely present?

    <p>Sunburst periosteal reaction</p> Signup and view all the answers

    In a bone lesion that causes expansile remodeling of the bone, what type of reaction is the bone exhibiting?

    <p>Blastic reaction</p> Signup and view all the answers

    Which of the following radiographic findings is most suggestive of a malignant bone lesion?

    <p>Narrow zone of transition</p> Signup and view all the answers

    In a bone lesion with a central location and a narrow zone of transition, what type of reaction is the bone exhibiting?

    <p>Permeative reaction</p> Signup and view all the answers

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