What are some musculoskeletal tumor features evaluated with MRI? Can MRI be used to distinguish between benign and malignant tumors? The tumor location, extent, and relationship to the neurovascular bundle and the presence of skip lesions and joint involvement are important features that are assessed with MRI, which help to determine the stage of the …
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Role of iv contrast material in MRI of musculoskeletal tumors What is the role of intravenous contrast material in MRI of musculoskeletal tumors? Contrast enhancement may be used to help distinguish tumor margins and to assess tumor vascularity. It may also help distinguish malignant viable tissue from inflammatory changes and necrosis for preoperative biopsy planning. …
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What is the role of magnetic resonance imaging (MRI) in the evaluation of musculoskeletal tumors? MRI is the most important diagnostic test for local staging and preoperative planning of primary bone and soft tissue tumors. It is also useful for monitoring the response to chemotherapy or radiation therapy and detecting postoperative tumor recurrence. The use …
Which imaging study should be ordered first for the evaluation of a suspected musculoskeletal tumor? Radiographs are the first step in detecting and diagnosing a bone tumor. Here is the list of the radiographic features to assess for bone tumors. Radiographs should also be obtained first with suspected soft tissue tumors to identify possible underlying bone …
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How do cartilage tumor matrix and neoplastic bone matrix differ? Cartilage matrix is typically ringlike, flocculent, or flecklike in the shape of rings and arcs whereas neoplastic bone matrix is typically cloudlike, amorphous, or ivory-like. The detection of tumor matrix can be helpful in recognizing the etiologic factor of the underlying lesion, that is, whether …
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What radiographic features are considered when evaluating a suspected bone tumor? When evaluating a suspected bone tumor, morphologic features, location in a bone (epiphysis, metaphysis, diaphysis), distribution within the skeleton (axial vs. appendicular), presence of tumor matrix, periosteal reaction, and/or presence of a soft tissue mass are considered. Morphologic features to consider are the pattern …
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What is the significance of unilateral sacroiliitis? Sacroiliitis, or inflammation of the sacroiliac joint, can be caused by both inflammatory and infectious processes. When the process is bilateral, it is generally the cause of a rheumatologic disease such as ankylosing spondylitis or inflammatory bowel disease–related spondyloarthropathy (particularly if symmetric) or reactive arthritis or psoriatic arthritis …