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[Primary plasma cell leukemia associated with hypercalcemia].

T Koizumi1, M Chino, T Amari

  • 1First Department of Internal Medicine, Shinshu University School of Medicine.

[Rinsho Ketsueki] the Japanese Journal of Clinical Hematology
|August 1, 1991
PubMed
Summary
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This case study highlights a rare instance of plasma cell leukemia presenting with hypercalcemia and anemia. Despite initial treatment success for hypercalcemia, the leukemia proved refractory to chemotherapy, leading to a fatal outcome.

Area of Science:

  • Hematology
  • Oncology

Background:

  • Plasma cell leukemia is a rare and aggressive hematologic malignancy.
  • Hypercalcemia is a known complication, but its presentation in early-stage plasma cell leukemia is uncommon.

Observation:

  • A 34-year-old male presented with anorexia, nausea, anemia, thrombocytopenia, and leukocytosis with atypical plasma cells (50%).
  • Bone marrow biopsy revealed 82% atypical plasma cells, and serum/urine analysis identified lambda Bence Jones protein.
  • Skeletal X-rays showed no osteolytic lesions, atypical for multiple myeloma.

Findings:

  • The patient was diagnosed with plasma cell leukemia associated with hypercalcemia.
  • Hypercalcemia was successfully managed with overhydration.
  • The leukemia was refractory to combination chemotherapy.

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Implications:

  • This case underscores the importance of considering plasma cell leukemia in the differential diagnosis of unexplained hypercalcemia and cytopenias, even without overt osteolytic lesions.
  • The rarity of hypercalcemia in initial-stage plasma cell leukemia presents a diagnostic challenge.
  • The poor response to chemotherapy highlights the aggressive nature of this disease and the need for further research into effective treatment strategies.