Abstract
The nasopharyngeal lymphoid tissue (adenoids) is an uncommonly reported primary site for Hodgkin's disease. We report a case of primary adenoidal, interfollicular, epithelioid cell-rich variant of mixed cellularity Hodgkin's disease. The combination of an interfollicular pattern and richness of epithelioid histiocytes made it very difficult to make the diagnosis of Hodgkin's disease without the help of immunohistochemistry. To our knowledge, only 39 cases of Hodgkin's disease primarily involving the Waldeyer's ring have been reported in the English literature, 24 of these primarily involving the adenoids. Our case shows the difficulty encountered in making the diagnosis when a very unusual morphologic appearance of Hodgkin's disease is seen at a rare presentation site. The appropriate immunohistochemical work-up should be performed in unusual lymphohistiocytic proliferations involving the Waldeyer's ring. Int J Surg Pathol 8(3):241-246, 2000
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