[Coexistence of plasmablastic lymphoma, Kaposi sarcoma and Castleman disease in a patient with HIV infection].

Plasmablastic lymphoma (PL) is an uncommon B-cell lymphoma that is strongly associated with human immunodeficiency virus (HIV) infection, and displays distinctive affinity for extranodal presentation in the oral cavity. We report the case of a PL involving the stomach in a 36 year-old man HIV+ patient, associated with Kaposi sarcoma (KS) in sections adjacent to lymphoma. He had a positive history of Castleman disease and KS in a lymphoid node biopsy.

[Clinical and pathological features of Castleman's disease: experience at the Instituto Nacional de Cancerología, Mexico City].

Background: Castleman's disease (CD) is a rare, poorly understood pathological entity. We report our experience with this clinicopathological entity.

Methods: We retrospectively analyzed records of all patients with CD from 1996 to 2003.

[Primary testicular lymphomas. Clinicopathologic analysis of 10 cases. Experience at the National Institute of Cancerology in Mexico City].

Unlabelled: Non-Hodgkin lymphoma is the most common primary testicular neoplasm of older men but is rare in young men. The vast majority of primary testicular lymphomas (PTL) are intermediate- to high-grade lymphomas.

Objective: To describe the clinical, morphologic, and immunophenolypic characteristics of PTL seen in a referral center.