Hodgkin disease with subsequent transformation to CD30 positive non-hodgkin lymphoma in six patients
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Published on: March 5, 2010
N Mori1, K Watanabe, Y Yamashita
1First Department of Pathology, Nagoya University School of Medicine, Japan.
Background:
Previous studies have indicated that some patients with Hodgkin disease have an aggressive clinical course. However, their characteristics have not been elucidated.
Methods:
Six patients initially diagnosed as having Hodgkin disease with subsequent transformation to CD30 positive non-Hodgkin lymphoma were clinically and immunohistochemically studied. Ten patients with classic anaplastic large cell lymphoma (ALCL) and 19 patients with classic Hodgkin disease were studied for comparison by immunohistochemistry.
Results:
Five patients, excluding one whom the authors recently encountered, had an aggressive clinical course and died within approximately 1 year after diagnosis; four of them were autopsied. Common histologic findings in the six patients included sheets of atypical mononuclear cells and sinusoidal infiltration of small numbers of these cells, as well as Reed-Sternberg cells or lacunar cells. Follow-up biopsies revealed histologic progression to ALCL in which sheets of atypical mononuclear or multinucleated cells spread throughout the lymph nodes. Immunohistochemically, epithelial membrane antigen, granzyme B, perforin, and pancadherin were expressed frequently in the six patients and in ALCL but were not expressed in Hodgkin disease. Latent membrane protein-1 (LMP-1) and Epstein-Barr virus-encoded RNA (EBER-1) were totally negative in the six patients and in ALCL but were expressed frequently in Hodgkin disease. In contrast, LeuM1 (CD15) was expressed frequently in the six patients and in Hodgkin disease, whereas it was not expressed in ALCL. MT1 (CD43), UCHL-1 (CD45RO), and P80 were totally negative in the six patients and in Hodgkin disease, whereas they were expressed variably in ALCL.
Conclusions:
These results suggest that the six patients studied had intermediate phenotypes between ALCL and Hodgkin disease. The authors also suggest that patients with sheets of atypical mononuclear cells and sinusoidal infiltration of atypical mononuclear and multinucleated cells have an aggressive clinical course and should be treated with intensive chemotherapy.
