title: Giant non-functional parathyroid cyst: A case report.
abstract: Giant parathyroid cysts (PCs) are a rare entity and possess a benign clinical course. PCs may be functional or non-functional, depending on the ability of the cyst to secrete parathyroid hormone (PTH). The present study reports a rare case of a giant PC in a 56-year-old male who presented to the Affiliated Tumor Hospital, Zhengzhou University (Zhengzhou, Henan, China) with a 10-month history of exertional dyspnea, associated with mild dysphagia that had persisted for 3 months. The present study reviews the clinical situation, laboratory examination, radiographic findings, treatment and prognosis of the patient, and provides a brief discussion regarding the associated literature. Giant PCs may manifest with compressive symptoms of the surrounding tissues. The diagnosis of a giant PC is based on increased levels of PTH in the fluid collected during the aspiration of the cyst. Management by surgical excision is recommended for giant PCs that cause local cervical symptoms.
authors.affiliation: Department of Head, Neck and Thyroid, Affiliated Tumor Hospital, Zhengzhou University, Zhengzhou, Henan 450008, P.R. China.
authors.forename: X U
authors.initials: XU
authors.lastname: Zhang
authors.affiliation: Department of Radiology, Affiliated Tumor Hospital, Zhengzhou University, Zhengzhou, Henan 450008, P.R. China.
authors.forename: Jun-Hui
authors.initials: JH
authors.lastname: Yuan
authors.affiliation: Department of Head, Neck and Thyroid, Affiliated Tumor Hospital, Zhengzhou University, Zhengzhou, Henan 450008, P.R. China.
authors.forename: L U
authors.initials: LU
authors.lastname: Feng
authors.affiliation: Department of Radiology, Affiliated Tumor Hospital, Zhengzhou University, Zhengzhou, Henan 450008, P.R. China.
authors.forename: Dong-Qiu
authors.initials: DQ
authors.lastname: Shan
authors.affiliation: Department of Head, Neck and Thyroid, Affiliated Tumor Hospital, Zhengzhou University, Zhengzhou, Henan 450008, P.R. China.
authors.forename: Jun-Fu
authors.initials: JF
authors.lastname: Wu
authors.affiliation: Department of Head, Neck and Thyroid, Affiliated Tumor Hospital, Zhengzhou University, Zhengzhou, Henan 450008, P.R. China.
authors.forename: Shan-Ting
authors.initials: ST
authors.lastname: Liu
keywords: mediastinal lesion; non-functioning; parathyroid cyst; parathyroid lesion; surgical excision