The purpose of this article is to evaluate and characterize the non-metastatic lesions mimicking the metastatic lesions on spine images obtained for metastasis evaluation in patients with underlying extra-spinal malignant tumors.
We often examine the spine for evaluation of the presence of metastasis or the cause back pain in patients with extra-spinal malignant tumors. The spine is the most common location for skeletal metastases ,
accounting for approximately 39% of all bone metastases Typically,
metastases are multiple ill-defined lesions of variable size with cortical disruption.
These lesions may be osteolytic or osteosclerotic .
Vertebral compression fracture and epidural tumor are common in metastases. Clinical...
Imaging findings OR Procedure details
The main imaging modalities Typical Metastases Malignant & benign compression fractures Atypical malignant compression fractures Known extra-spinal malignant tumors Hemangioma – highly possible Fibrous dysplasia – highly possible Enostosis - confirmative DDx.
Single osteoblastic metastasis mimicking enostosis Vertebral osteonecrosis – highly possible Modic change / Schmorl node - nearly confirmative Infectious spondylitis - confirmative DDx.- Metastasis mimicking infectious spondylitis...
Although most causes of back pain are metastases in patients with underlying malignant tumors,
there are many cases of non-metastatic lesions mimicking metastases or extra-osseous lesions in spine evaluations. Although there are many lesions with unusual imaging manifestations, the familiarity of pathognomonic imaging findings in some non-metastatic lesions may be helpful for planning the treatment in patients with underlying malignant tumors. Unnecessary procedures or treatments may be...
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Imaging and differential diagnosis of primary bone tumors and...