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Research Article

Intractable Pruritus Associated with Insulinoma in the Absence of Multiple Endocrine Neoplasia: A Novel Paraneoplastic Phenomenon

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Pages 678-680 | Published online: 08 Jul 2009
 

Abstract

Insulinoma is a rare tumour, the main symptoms of which are related to hypoglycaemia. Generalized pruritus has been described in association with the multiple endocrine neoplasia syndrome (MEN II or Sipple's syndrome) as a paraneoplastic phenomenon. Further, pruritus is known to be part of the paraneoplastic syndrome in other solid tumours. This case describes a patient presenting with symptoms of Whipple's triad (hypoglycaemic symptoms during fasting, low fasting blood sugar levels and symptoms relieved by intravenous dextrose). Magnetic resonance scanning and selective mesenteric angiography demonstrated a probable pancreatic neuroendocrine tumour. Pituitary fossa imaging and endocrine profile excluded the MEN I syndrome. Symptoms resolved after surgical removal of the tumour. Histology confirmed a pancreatic neuroendocrine tumour. The association between pruritus and insulinoma appears to be a novel paraneoplastic phenomenon.

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