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Related Experiment Video

Updated: Jun 7, 2026

In Vitro Differentiation Model of Human Normal Memory B Cells to Long-lived Plasma Cells
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[Morphologic diversity of plasma cell neoplasms].

Hong Zhu1, Xiao-ge Zhou

  • 1Department of Pathology, Beijing Friendship Hospital, Capital University of Medical Science, China.

Zhonghua Bing Li Xue Za Zhi = Chinese Journal of Pathology
|November 9, 2010
PubMed
Summary

Plasma cell neoplasms show diverse architectural and cytologic variations, sometimes mimicking other cancers. Immunohistochemistry is crucial for accurate diagnosis and differentiating these tumors from lymphomas and carcinomas.

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Area of Science:

  • Pathology
  • Oncology
  • Hematology

Background:

  • Plasma cell neoplasms encompass a spectrum of plasma cell dyscrasias.
  • Understanding their morphological diversity is key for accurate diagnosis.

Purpose of the Study:

  • To investigate architectural and cytologic variations in plasma cell neoplasms.
  • To discuss diagnostic challenges and differential diagnoses.

Main Methods:

  • Histological and immunohistochemical examinations of 46 plasma cell neoplasm cases.
  • Morphologic and immunophenotypic feature analysis.

Main Results:

  • 40/46 cases showed diffuse growth; 3 had nest-like architecture, 3 had sclerosis.
  • Cytologic variations included mature plasma cells, immunoblasts, small lymphocytes, signet-ring cells, anaplastic, histocytoid, and spindle cells.
  • Immunohistochemistry revealed CD79a (93.1%), CD38 (87.1%), CD138 (83.3%), MUM-1 (96.8%), and light chain restriction (93.1%).

Conclusions:

  • Plasma cell neoplasms can exhibit unusual morphology beyond typical patterns.
  • Distinguishing these from lymphomas, carcinomas, and sarcomas requires careful evaluation.
  • Immunohistochemistry is essential for definitive diagnosis.