title: Papillary parathyroid adenoma. A rare occurrence and its importance in differentiation from papillary carcinoma of the thyroid.
abstract: The case of a 67-year-old woman with primary hyperparathyroidism manifested by hypercalcemia with anorexia, nausea, and weakness; low serum phosphorus; high circulating parathyroid hormone; and mildly elevated calcitriol and parathyroid hormone-related protein is reported. A cystic lesion was removed from the inferior pole of the right lobe of the thyroid, and serum calcium levels rapidly returned to normal. The lesion was proven histologically to be a parathyroid adenoma with predominate papillary features. The differentiation of such a rare lesion from papillary carcinoma of the thyroid, both histologically and cytologically, is stressed.
authors.affiliation: Department of Pathology, University of Alabama at Birmingham Medical Center 35233, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Ho
mesh_terms: D000236:Adenoma / Q000175:diagnosis* / Q000473:pathology; D000368:Aged; D002291:Carcinoma, Papillary / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010282:Parathyroid Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013964:Thyroid Neoplasms / Q000473:pathology