[Ultrastructural and histochemical study of Hamasaki-Wesenberg bodies in lymph node sarcoidosis]

Report of a histochemical and ultrastructural study of the Hamasaki-Wesenberg Bodies in ganglionic sarcoidosis. These peculiar bodies have variable form and size and are located in the ganglionic sinuses as free elements or in the histiocytes; they are found most often in cases with sarcoidosis but are not specific of this disease. The results of this study suggest that their origin is probably lysosomial and that their nature is not unlike that of ceroid or lipofuscinic pigments. The exact signification of the presence of these bodies in the lymph nodes would need deeper investigation.