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The authors report a case of glucagonoma in a 52 years old man presenting a migratory necrolytic erythema. By conjugated means of arteriography and splenoportography with plasma glucagon assays the tumour was localized in the tail of the pancreas. Surgical excision was easy but hepatic metastases revealed the malignant nature of the tumor. This glucagonoma has been investigated by several approaches including electron microscopy, immunocytochemistry and radioimmunological techniques. The tumor contained scattered glucagon and pancreatic polypeptide immunoreactive cells; insuline, glucagon, somatostatin, pancreatic polypeptide, gastrin and VIP antisera gave negative results. Ultrastructurally, these cells showed atypical secretory granules different from A granules of the normal glucagon cell. Radio immunological determinations carried out after gel permeation chromatography of plasma revealed high molecular weight (4 000, 9 000, 14 000) immunoreactive glucagon peptides. They have been thought to be proglucagon forms which did not react with specific antiglucagon sera used in cytological studies. Reported data are consistent with the classification of this tumor in the category of glucagonoma with the "glucagonoma syndrome".
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E Hollande, and
L Pradayrol, and
J P Vinel, and
B Gorguet
October 1980,
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E Hollande, and
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J P Vinel, and
B Gorguet
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Pancreas,
