title: Extramedullary plasmacytoma of the trachea.
abstract: Extramedullary plasmacytomas are plasma cell tumors that occur outside the bone marrow. They constitute around 4 % of all plasma cell neoplasms. The most common site of extramedullary plasmacytoma is the upper aerodigestive tract-nasal cavity, paranasal sinuses and oronasopharynx. We are presenting a case of extramedullary plasmacytoma of the trachea. Trachea is an extremely rare site of plasmacytoma. When extraosseous plasmacytoma occur in uncommon sites, the distinction from B cell lymphomas showing extensive plasmacytic differentiation can be difficult and diagnostically challenging.
authors.affiliation: Division of Pathology, Regional Cancer Centre, Trivandrum, 695011, Kerala State, India, renu.sukumaran@gmail.com.
authors.forename: Renu
authors.initials: R
authors.lastname: Sukumaran
authors.forename: Rekha A
authors.initials: RA
authors.lastname: Nair
authors.forename: Priya Mary
authors.initials: PM
authors.lastname: Jacob
authors.forename: Sumod Mathew
authors.initials: SM
authors.lastname: Koshy
authors.forename: Arun Peter
authors.initials: AP
authors.lastname: Mathew
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor / Q000032:analysis; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D018442:Lymphoma, B-Cell, Marginal Zone / Q000473:pathology; D008297:Male; D010954:Plasmacytoma / Q000473:pathology*; D012907:Smoking / Q000009:adverse effects; D014134:Tracheal Neoplasms / Q000473:pathology*
chemical_list: D014408:Biomarkers, Tumor
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