title: Parathyromatosis as cause of recurrent secondary hyperparathyroidism: a cytologic diagnosis.
abstract: Parathyromatosis is a rare cause of hyperparathyroidism. It can be divided into two types: primary and secondary. The pathologic lesion consists of multiple small nodules of hypercellular parathyroid tissue strewn in soft tissue (fat, skeletal muscle, fibrous tissue) of the neck. We present a case of parathyromatosis occurring in a patient with recurrent secondary hyperparathyroidism 4 yr after parathyroidectomy. The diagnosis was confirmed preoperatively by fine-needle aspiration of one of several neck masses.
authors.affiliation: Department of Pathology and Laboratory Medicine, 6 Founders Pavilion, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104, USA. baloch@mail.med.upenn.edu
authors.forename: Z W
authors.initials: ZW
authors.lastname: Baloch
authors.forename: D
authors.initials: D
authors.lastname: Fraker
authors.forename: V A
authors.initials: VA
authors.lastname: LiVolsi
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D002292:Carcinoma, Renal Cell / Q000209:etiology / Q000601:surgery; D006801:Humans; D006934:Hypercalcemia / Q000209:etiology; D006962:Hyperparathyroidism, Secondary / Q000209:etiology* / Q000473:pathology; D007680:Kidney Neoplasms / Q000209:etiology / Q000601:surgery; D008297:Male; D010279:Parathyroid Diseases / Q000150:complications* / Q000473:pathology / Q000601:surgery; D010281:Parathyroid Hormone / Q000097:blood; D016105:Parathyroidectomy; D012008:Recurrence
chemical_list: D010281:Parathyroid Hormone