Imaging Studies for Bone Tumors Quiz

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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?

Specific characteristic features Signup and view all the answers

How do malignant bone tumors typically affect the surrounding bone?

Rapid, permeative destruction with loss of the transitional zone Signup and view all the answers

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

MRI Signup and view all the answers

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

CT scan Signup and view all the answers

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

Hot spots Signup and view all the answers

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

~70-80% Signup and view all the answers

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

No local extension Signup and view all the answers

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

Radical resection Signup and view all the answers

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

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

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

Approximately 10% Signup and view all the answers

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

Chondrosarcoma Signup and view all the answers

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

Mixed osteoblastic and osteolytic 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?

Eccentric lesion Signup and view all the answers

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

Sunburst periosteal reaction 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?

Blastic reaction Signup and view all the answers

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

Narrow zone of transition 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?

Permeative reaction Signup and view all the answers