A Functional Parathyroid Cyst from the Hemorrhagic Degeneration of a Parathyroid Adenoma.

A Functional Parathyroid Cyst from the Hemorrhagic Degeneration of a Parathyroid Adenoma. Intern Med. 2019 Oct 07;: Authors: Uehara A, Suzuki T, Yamamoto Y, Hasegawa M, Koitabashi K, Yazawa M, Koike J, Shibagaki Y Abstract A 77-year-old man with a history of hypertension, prostate hyperplasia, and urolithiasis was admitted for acute kidney injury caused by hypercalcemia. Neck ultrasonography showed a large cyst adjacent to the right lower thyroid lobe. Although a technetium99m sestamibi scan was negative, an extremely high intracystic intact parathyroid hormone level suggested that the cyst had a parathyroid origin and that a functional parathyroid cyst was present. Immunohistochemical staining for the calcium-sensing receptor (CaSR) after right lower parathyroidectomy revealed CaSR-positive cells lining the cyst, indicating that the functional parathyroid cyst had originated from the hemorrhagic degeneration of a parathyroid adenoma. PMID: 31588082 [PubMed - as supplied by publisher]
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research