The contribution of immunohistochemistry to the diagnosis of neuroendocrine tumors.

The use of specific secretory products, hormones, and neuroregulators as diagnostic tools for neuroendocrine tumors is illustrated. Results of extensive immunohistochemical and cytologic investigations are discussed in the light of other pathologic and clinical findings to serve as a basis for tumor classification and as a help in prognostic evaluation. Endocrine tumors of the pancreas, gut, lung and urogenital tract are dealt in some detail.