title: Parathyroid adenoma presenting as a "cold nodule" on thyroid scan.
mesh_terms: D000236:Adenoma / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D010282:Parathyroid Neoplasms / Q000175:diagnosis*; D013964:Thyroid Neoplasms / Q000175:diagnosis*