title: Cytology of plasma cell rich effusion in cases of plasma cell neoplasm.
abstract: BACKGROUND
  Multiple myeloma or plasmacytoma resulting in malignant effusion is rarely described in literature.
  
  
  OBJECTIVE
  In this paper, we have studied the seven rare cases of plasma cell infiltration in effusion fluid.
  
  
  METHODS
  We studied six cases of pleural fluid and one case of ascetic fluid. Detailed cytological features, clinical history, bone marrow examinations, serum electrophoresis, and immunofixation data were analyzed.
  
  
  RESULTS
  There were two cases of plasmacytoma, four cases of multiple myeloma, and one case of plasmablastic lymphoma. On cytology, all the cases showed excess plasma cells along with mesothelial cells and lymphocytes on effusion cytology smear.
  
  
  CONCLUSIONS
  Plasma cell rich effusion in cases of plasma cell tumor is rare. However, on cytology these cases do not pose much problem if relevant history is known.
authors.affiliation: Department of Cytology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Punjab and Haryana, India.
authors.forename: Debasis
authors.initials: D
authors.lastname: Gochhait
authors.affiliation: Department of Cytology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Punjab and Haryana, India.
authors.forename: Pranab
authors.initials: P
authors.lastname: Dey
authors.affiliation: Department of Haematology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Punjab and Haryana, India.
authors.forename: Neelam
authors.initials: N
authors.lastname: Verma
keywords: Cytology; effusion; multiple myeloma; plasma cell; plasmacytoma