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The spine represents the most frequent site of skeletal metastasis. Of the malignant tumors that secondarily involve the spine, carcinomas of the lung, breast, and prostate are most frequently encountered (1). Magnetic resonance imaging (MRI) is a powerful diagnostic tool that can be used to distinguish spinal metastasis from infectious spondylodiscitis (2). Typical spinal metastasis shows complete replacement of normal bone marrow in the involved noncontiguous vertebrae. Destruction of vertebral bodies with compression fracture is occasionally visible. Paraspinal or epidural soft tissue infiltration also implies spinal metastasis, and pedicle involvement can be seen (1). However, it is challenging to differentiate spinal metastasis from infectious spondylodiscitis in the presence of only diffuse bone marrow infiltration with paraspinal soft tissue infiltration in contiguous vertebrae without significant vertebral body collapse or destruction. Furthermore, if the patient has ambiguous laboratory findings and clinical symptoms, an accurate diagnosis can be more difficult to reach. We experienced an unusual case of breast cancer spinal metastasis that mimicked findings of infectious spondylodiscitis on MRI.

Contiguous Spinal Metastasis Mimicking Infectious Spondylodiscitis