Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Multiple myeloma
- Radiologic Findings
- Posteroanterior chest radiograph shows large mass in right posterolateral chest wall, with destruction of right 8th rib. Contrast enhanced chest CT images show soft tissue masses involving the chest wall and the retroperitoneum. PET image shows multifocal hypermetabolic lesions in chest wall, right retroperitoneum and in multiple bones. US-guided needle biopsy of back mass and bone marrow biopsy revealed plasma cell myeloma.
- Brief Review
- Multiple myeloma (MM) is a neoplastic proliferation of plasma cells that is characterized by bone destruction and increased monoclonal immunoglobulin and light chain proteins in the blood and urine. Radiographically, multiple myeloma typically results in multifocal osteolytic lesions in the axial skeleton. A number of MM patients develop soft-tissue extramedullary plasmacytomas (EMPs). In most patients with EMPs, soft tissue tumors arise as direct extensions from skeletal tumors when they disrupt the cortical bone. The remaining tumors result from hematogenous metastatic spread. The hematogenous spread can consist of single or multiple large highly vascularized subcutaneous or skin nodules or nodules in the liver, breast, kidney or CNS involvement, although any organ can be involved.
- References
- 1. Muller NL, Silva CI. Imaging of the chest. Saunders, 2008;1602.
2. Blade J, et al. Soft-tissue plasmacytomas in multiple myeloma: incidence, mechanisms of extramedullary spread and treatment approach. J Clin Oncol 2011;29:3805-3812.
- Keywords
- Multiple myeloma, chest wall, bone,