title: Signet-ring Cell Lymphoma-a Case Report.
abstract: A case of signet-ring cell lymphoma diagnosed initially by fine needle aspiration cytology is reported. This rare tumor is a variant of follicular lymphoma, which closely resembles metastatic adenocarcinoma and other tumors which exhibit signet-ring cell appearance. Correct diagnosis can be achieved by careful morphologic analysis together with positive reactivity with lymphoid markers. The cytohistologic, immunohistochemical and electron microscopic features are described, and the differ ential diagnostic considerations are discussed in the report.
authors.affiliation: a Department of Histopathology Faculty of Medicine , Universiti Kebangsaan Malaysia , Jalan Yaacob Latif, Cheras, 56000 Kuala Lumpur , Malaysia.
authors.forename: N
authors.initials: N
authors.lastname: Masir
authors.affiliation: b Department of Haematology Faculty of Medicine , Universiti Kebangsaan Malaysia , Jalan Yaacob Latif, Cheras, 56000 Kuala Lumpur , Malaysia.
authors.forename: S K
authors.initials: SK
authors.lastname: Cheong
authors.affiliation: c Department of Surgery , Faculty of Medicine, Universiti Kebangsaan Malaysia , Jalan Yaacob Latif, Cheras, 56000 Kuala Lumpur , Malaysia.
authors.forename: K
authors.initials: K
authors.lastname: Noordin
keywords: Aspiration biopsy; Immunohistochemistry; Lymphoma; Signet-ring cell