Coexistencia de linfoma plasmablástico, sarcoma de Kaposi y enfermedad de Castleman en un paciente con infección por virus de inmunodeficiencia humana

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.