TY - JOUR T1 - Parathyroid cyst of the thymus. JF - Thorax JO - Thorax SP - 913 LP - 914 DO - 10.1136/thx.50.8.913 VL - 50 IS - 8 AU - W G McCluggage AU - C F Russell AU - P G Toner Y1 - 1995/08/01 UR - http://thorax.bmj.com/content/50/8/913.abstract N2 - A case is described of primary hyperparathyroidism in a patient with both a parathyroid cyst within the thymus gland and a concomitant parathyroid adenoma. The parathyroid adenoma contained microcystic areas of degeneration, and it is thought that the parathyroid cyst reflected degenerative change in a pre-existing adenoma. Parathyroid cyst should be considered in the differential diagnosis of cystic lesions within the thymus. Fine needle aspiration and parathyroid hormone assay on cyst fluid may provide a preoperative diagnosis. ER -