title: Intraocular large B-cell lymphoma. A case report.
abstract: BACKGROUND
  Large cell lymphoma involving the vitreous humor is uncommon, and its diagnosis in the absence of central nervous system disease can be difficult. The major diagnostic difficulties with vitreous washings in the absence of ancillary studies are in the distinction of inflammatory lymphoid infiltrate from intraocular lymphoma or diagnosing lymphoma when only very few neoplastic cells are present.
  
  
  METHODS
  A 75-year-old, white male sought medical attention for bilateral blurred vision and decreased visual acuity of recent onset. A clinical diagnosis of bilateral uveitis to rule out primary intraocular lymphoma or an infectious process was made, and a right vitrectomy was performed. An unequivocal diagnosis of lymphoma could not be made due to the paucity of neoplastic cells on that specimen. Two months later smears from the Cytospin (Thermo Shandon, Pittsburgh, Pennsylvania, U.S.A.) prepared on the specimen from a left vitrectomy showed a greater number of large, pleomorphic cells. In addition, immunocytochemical staining confirmed the B-cell lineage of the neoplastic cells. Immunoglobulin gene rearrangement analysis performed by the polymerase chain reaction method on the frozen cell pellet from the left vitrectomy demonstrated the presence of a monoclonal B-cell population, confirming the diagnosis of large B-cell lymphoma.
  
  
  CONCLUSIONS
  Vitreous cytology in conjunction with ancillary studies is a sensitive procedure in the diagnosis of intraocular lymphoma.
authors.affiliation: Department of Pathology and Laboratory Medicine, Albany Medical College, 47 New Scotland Avenue, Albany, New York 12208, USA.
authors.forename: Shridevi
authors.initials: S
authors.lastname: Karikehalli
authors.forename: Tipu
authors.initials: T
authors.lastname: Nazeer
authors.forename: C Y
authors.initials: CY
authors.lastname: Lee
mesh_terms: D000368:Aged; D000911:Antibodies, Monoclonal / Q000235:genetics; D018951:Antigens, CD20 / Q000378:metabolism; D001402:B-Lymphocytes / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D014408:Biomarkers, Tumor / Q000378:metabolism; D019070:Cell Lineage / Q000235:genetics; D002467:Cell Nucleus / Q000473:pathology; D002999:Clone Cells / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D003937:Diagnosis, Differential; D005134:Eye Neoplasms / Q000276:immunology / Q000473:pathology* / Q000503:physiopathology; D017809:Fatal Outcome; D006801:Humans; D007074:Immunoglobulin G / Q000235:genetics; D007150:Immunohistochemistry; D016393:Lymphoma, B-Cell / Q000276:immunology / Q000473:pathology* / Q000503:physiopathology; D008297:Male; D016609:Neoplasms, Second Primary / Q000276:immunology / Q000473:pathology* / Q000503:physiopathology; D014786:Vision Disorders / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D014822:Vitreous Body / Q000473:pathology* / Q000503:physiopathology
chemical_list: D000911:Antibodies, Monoclonal; D018951:Antigens, CD20; D014408:Biomarkers, Tumor; D007074:Immunoglobulin G