BOSNIAN JOURNAL OF BASIC MEDICAL SCIENCES 2006; 6 (3): 34-37

Anaplastic large cell lymphoma (ALCL) is a rare non-Hodgkin, T-cell lymphoma, represent-ing only - of all lymphoid neoplasm’s in adults according to World Health Organization (WHO). CD antigen-positive, large neoplastic cells characterize ALCL. We present here a -year-old male with pulmonary ALCL previously diagnosed with Hodgkin disease. Micro-scopically, atypical bi-and multinucleated cells with frequent mitoses were present. The neo-plastic cells were large and had clear cytoplasm, large vesicular nuclei, and prominent nucleoli. Immunophenotypic analysis revealed LCA, vimentin and CD positivity. ALK immunos-taining was negative. Immunohistochemical profile was consistent with ALK negative ALCL. The progression of Hodgkin lymphoma to aggressive non-Hodgkin lymphoma (ALCL in this case) is well known entity. After the diagnosis was established, our patient immediately had been referred to the Department of Hematology in order to get appropriate chemotherapy, necessary in such cases. KEY WORDS: lung, anaplastic large cell lymphoma A Case of t/nul