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Updated: Jul 29, 2026

Substernal Thyroid Biopsy Using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration
Published on: November 10, 2014
[Parathyroid cyst. Report of ten cases]
A Hamy1, S Masson, M F Heymann
1Clinique chirurgicale 1, hôpital G.R. Laënnec, 44093 Nantes, France. antoine.hamy@chu-nantes.fr
Aim Of The Study:
To evaluate the characteristics of the parathyroid cysts (PC).
Patients And Method:
Ten patients with PC were included in this retrospective study. The PC were discovered as follows: cervical mass (n = 3), hyperparathyroidism (n = 3), incidentally during thyroid surgery (n = 3) and screening for obesity (n = 1). Intracystic parathormone determination was performed after fine needle aspiration in 2 cases.
Results:
Mean cyst measurements were 27 mm (ext: 5-70 mm) to 22 mm (5-45 mm). Nine cysts were cervical (resection by cervicotomy), and one was mediastinal (resection by sternotomy). In addition to the resection of the PC, 3 adenomas, 1 hyperplasia of the parathyroid glands and 3 benign thyroid diseases were recognized and treated during the cervicotomies.
Conclusion:
The diagnosis of PC is not common and must be based primarily on the study of the cyst liquid obtained by percutaneous puncture (intracystic parathormone measurement).

