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[Testicular involvement in IgD multiple myeloma].

K Kawauchi1, T Ogasawara, M Yasuyama

  • 1Department of Medicine, Tokyo Women's Medical University Daini Hospital.

[Rinsho Ketsueki] the Japanese Journal of Clinical Hematology
|January 26, 2002
PubMed
Summary

This case study details a rare instance of IgD multiple myeloma with extensive testicular involvement. The unique histopathology of the resected testis highlights unusual myeloma cell components.

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Area of Science:

  • Hematology
  • Oncology

Background:

  • Multiple myeloma is a plasma cell malignancy.
  • IgD lambda monoclonal gammopathy is a rare subtype.

Observation:

  • A 65-year-old man presented with back pain and renal dysfunction, diagnosed with IgD lambda multiple myeloma.
  • The patient experienced disease progression despite initial combination therapies (DMVM-IFN-alpha, VAD).
  • Testicular involvement was diagnosed and confirmed via orchiectomy, revealing myeloma cells displacing normal testicular tissue.

Findings:

  • The resected testis showed a unique histopathology with plasmacytoid and lymphoid myeloma cell components.
  • Extensive myeloma spread occurred, including pleural, mediastinal, spinal, and contralateral testicular involvement.
  • The patient's condition progressively worsened, leading to death despite multiple treatment attempts.

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Implications:

  • This case underscores the rarity of IgD myeloma with testicular infiltration.
  • The unique histopathological findings warrant further investigation into myeloma cell heterogeneity.
  • Understanding rare presentations is crucial for comprehensive multiple myeloma management.