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[Solitary spinal plasmacytoma].

J L Feldmann, M Guedri, N Ohana

    Annales De Medecine Interne
    |January 1, 1984
    PubMed
    Summary

    Solitary plasmocytoma of the spine primarily affects men, presenting with back pain and neurological deficits. Treatment outcomes vary, with some patients developing metastatic disease over time.

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    Area of Science:

    • Oncology
    • Neurology
    • Hematology

    Background:

    • Solitary plasmocytoma of the spine is a rare plasma cell neoplasm.
    • It typically affects middle-aged men and can present with significant spinal symptoms.

    Purpose of the Study:

    • To analyze clinical characteristics, treatment outcomes, and prognostic factors in patients with solitary spinal plasmocytoma.
    • To investigate the potential for progression to multiple myeloma.

    Main Methods:

    • Retrospective case series analysis of 11 patients with solitary plasmocytoma of the spine.
    • Review of clinical data, imaging findings, treatment modalities, and long-term follow-up.

    Main Results:

    • The study identified 11 cases, predominantly in men (9/11) with an average age of 56.
    • Common symptoms included back pain with radicular irradiation (9/11) and neurological signs (5/11).
    • Vertebral lesions included lysis (5/11), polycystic appearance (5/11), and collapse (1/11), often involving the posterior arch (9/11).
    • Monoclonal immunoglobulin was detected in 7/11 patients.
    • Radiochemotherapy led to partial or complete regression of the monoclonal component in 5/11 patients.
    • Radiotherapy alone was less effective in controlling monoclonal immunoglobulin levels.
    • Four patients (36%) developed metastatic plasmacytoma, with 3 experiencing medullary invasion.
    • Increased polyclonal immunoglobulins indicated remission, while their decrease signaled myelomatous dissemination.

    Conclusions:

    • Solitary plasmocytoma of the spine requires careful management due to the risk of progression to multiple myeloma.
    • Treatment strategies, including radiochemotherapy, can impact disease control.
    • Long-term monitoring is crucial for early detection of metastatic spread or medullary invasion.

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