68Ga-DOTA-TOC Uptake in Pleomorphic Adenoma

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A 56-year-old man who was recently diagnosed with a carcinoid tumor of the os petrosum was referred for a 68Ga-DOTA-TOC PET/CT scan. Besides the moderately increased 68Ga-DOTA-TOC accumulation in the carcinoid tumor, the scan showed strongly increased and focal 68Ga-DOTA-TOC uptake in an additional lesion in the right parotid gland. The markedly different 68Ga-DOTA-TOC avidity suggested a different etiology, and histological examination demonstrated a pleomorphic adenoma.

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