Paraganglioma with radiographic dye: an interesting histopatholological finding

Extraadrenal paraganglioma makes up a dispersed neuroendocrine system which extends from the base of the skull down to the pelvic floor. Paraganglioma have been found in particularly every site in which normal paraganglia are known to occur. Herein, we present a typical case of carotid body paraganglioma according to both histological and immunohistochemical findings. The presence of a large ribbon-like amphophilic to basophilic amorphous material which, according to the history of angiography, must result from the precipitation of angiographic dye makes this entity unique and the first to be reported.