Merkel cell carcinoma and iodine-131 metaiodobenzylguanidine scan

Abstract
Two cases of Merkel cell carcinoma, a neuroendocrine neoplasia of the skin, investigated with iodine-131 metaiodobenzylguanidine (131i-mIBG) scintigraphy, are reported. Uptake in the tumor was evident only in 1 case. The possible diagnostic and therapeutic role of 131I-mIBG in patients with this rare neoplasm is discussed.

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