title: [Two cases of hyperfunctioning parathyroid cyst].
abstract: Two cases of parathyroid cyst were experienced. Both cases presented clinical data and symptoms of hyperparathyroidism. Microscopically, one had a thin fibrous wall containing parathyroid adenomatous tissue in the inner surface and the other showed cyst formation without any histological evidence of adenoma or hyperplasia. Most parathyroid cysts are non-functioning. In occasional cases, the cyst may contain a hyperfunctioning adenoma. The hyperfunctioning parathyroid cysts with normal parathyroid tissue are discussed.
mesh_terms: D000368:Aged; D003560:Cysts / Q000503:physiopathology*; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010279:Parathyroid Diseases / Q000503:physiopathology*; D010280:Parathyroid Glands / Q000503:physiopathology*