AI Article Synopsis

  • The study aimed to differentiate between plasmablastic lymphoma and myeloma using clinical, morphological, and phenotypical features.
  • A review of plasmablastic neoplasms over 15 years led to a classification where 10 out of 11 cases were categorized as lymphoma or myeloma, with the presence of Epstein-Barr virus being a key indicator.
  • The authors concluded that better clinical and laboratory insights are crucial for accurate differentiation, and future research is needed to discover specific features for better diagnosis.

Article Abstract

Aims: To determine the utility of clinical, morphological and phenotypical features in the differential diagnosis of plasmablastic lymphoma and myeloma with plasmablastic features.

Methods: All plasmablastic neoplasms identified from a 15-year retrospective search were reviewed and classified into 'lymphoma', 'myeloma' or 'indeterminate'. The classification was then compared with the previously established clinical diagnosis. Lessons learned from this review were used to design a diagnostic algorithm for pathologists to use in the absence of known clinical history.

Results: The classification was possible in 10 of 11 cases, 8 lymphomas and 2 myelomas (n=2). No distinctive morphological or phenotypical features were identified. The most useful histopathological parameter was a positive Epstein-Barr virus in situ hybridisation. Presence of associated lymphadenopathy and/or oral mass in the absence of complete myeloma-defining signs was used to favour a diagnosis of lymphoma in 4 of 8 cases.

Conclusions: The distinction between plasmablastic lymphoma from plasmablastic myeloma warrants detailed knowledge of clinical, radiological and laboratorial findings. New studies identifying distinctive phenotypical or genetic features are needed to improve the histopathological differentiation of plasmablastic neoplasms.

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Source
http://dx.doi.org/10.1136/jclinpath-2016-204294DOI Listing

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