Duodenal gangliocytic paraganglioma: an immunohistochemical and ultrastructural study and a hypothesis concerning its origin
We report the immunohistochemical and ultrastructural features of three duodenal gangliocytic paragangliomas and compare them with duodenal carcinoid, extra-adrenal paraganglioma, pheochromocytoma, and ganglioneuroma. The gangliocytic paraganglioma is characterized by polygonal or columnar epithelia...
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Veröffentlicht in: | The American journal of surgical pathology 1985, Vol.9 (1), p.31-41 |
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Sprache: | eng |
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Zusammenfassung: | We report the immunohistochemical and ultrastructural features of three duodenal gangliocytic paragangliomas and compare them with duodenal carcinoid, extra-adrenal paraganglioma, pheochromocytoma, and ganglioneuroma. The gangliocytic paraganglioma is characterized by polygonal or columnar epithelial cells, ganglion cells, and spindle cells. The epithelial cells stained for neurofilament, neuron-specific enolase, pancreatic polypeptide, and somatostatin in three cases; leu-enkephalin, molluskan cardioexcitatory peptide, and vasoactive intestinal peptide in two; and glucagon and insulin in one case each. The ganglion cells were positive for leu-enkephalin, neurofilament, neuron-specific enolase, pancreatic polypeptide, and somatostatin in three cases, and glucagon in one. The spindle cells stained for neurofilament, neuron-specific enolase, and S-100 protein. Although there was some overlap in immunoreactivity between the gangliocytic paraganglioma and the other tumors examined, our data indicate that the gangliocytic paraganglioma is a distinctive lesion. We propose that it is a hyperplastic or neoplastic proliferation of 1) endodermally derived epithelial cells originating from the ventral primordium of the pancreas, 2) neuroectodermal ganglion cells, and 3) neuroectodermal spindle cells (Schwann cells). |
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ISSN: | 0147-5185 1532-0979 |
DOI: | 10.1097/00000478-198501000-00007 |