Neoplastic Process
plasmacytoma Audio
[ plaz-muh-sy-toh-muh ]
Subclass of:
Lymphoproliferative Disorders; Plasma Cell Neoplasm
Definitions related to plasmacytoma:
  • A discrete mass of neoplastic monoclonal plasma cells either in the bone marrow or in an extramedullary location.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • A malignant neoplasm characterized by the presence of a monoclonal population of plasma cells forming a tumor mass.
    NCI
    U.S. National Cancer Institute, 2021
  • A type of cancer that begins in plasma cells (white blood cells that produce antibodies). A plasmacytoma may turn into multiple myeloma.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • Any discrete, presumably solitary, mass of neoplastic PLASMA CELLS either in BONE MARROW or various extramedullary sites.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (solitary plasmacytoma) A localized malignant neoplasm that arises in the bony skeleton or soft tissue. It is composed of clonal (malignant) plasma cells forming a tumor mass.
    NCI
    U.S. National Cancer Institute, 2021
  • Plasmacytoma is a localized mass of neoplastic monoclonal plasma cells that represents approximately 5% of all plasma cell neoplasms. There are two separate entities: primary plasmacytoma of the bone and extramedullary plasmacytoma of the soft tissues. Of the extramedullary plasmacytomas, 80% occur in the head and neck, usually in the...
    NIH Genetic and Rare Diseases
    National Center for Advancing Translational Sciences
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