case_images: PMC9091408_01
case_images: (a) and (b) Plain radiographs with a L4 ivory vertebra. (c) and (d) CT scan showing sclerotic lesion in the L4 vertebra and iliac bone marked with arrows. (e) and (f) T2- and T1-weighted images sagittal sections of the lumbar spine showing hypointense signal changes suggesting sclerotic lesion in the L4 vertebra.
case_images: JOCR-12-18-g001.jpg
case_images: PMC9091408_01_JOCR-12-18-g001.jpg
case_images: F1
case_images: The patient was investigated with plain radiographs and MRI of the lumbar spine, which showed an osteosclerotic lesion in the L4 vertebra and iliac bone (Fig. 1).
case_images: Histopathology and immunohistochemistry images showing (a) CD38, (b) CD138, (c) lambda, and (d) MUM-1 positivity suggesting a diagnosis of multiple myeloma.
case_images: JOCR-12-18-g002.jpg
case_images: PMC9091408_01_JOCR-12-18-g002.jpg
case_images: F2
case_images: Immunohistochemistry of the bone core sample was positive for CD138, CD38, MUM-1, lambda light chains, and negative for kappa light chains suggesting the diagnosis of plasma cell dyscrasias producing lambda light chains (Fig. 2).