Nonfunctional parathyroid cyst: case report.
BACKGROUND
Parathyroid cysts are rare clinical and pathological entities, with less than 300 cases reported. The inferior parathyroid glands are most commonly involved, with left-side predominance. Parathyroid cysts may be functional or nonfunctional, depending on their association with hypercalcemia.


METHODS
A 25-year-old man presented a palpable asymptomatic left-side neck mass. Ultrasound revealed a cystic structure contiguous with the left thyroid lobe. Serum ionic calcium was normal. The patient underwent left thyroid lobectomy plus isthmectomy with excision of the cyst. The histological findings revealed a parathyroid cyst. Parathyroid cysts typically present as asymptomatic neck masses, and surgical excision appears to be the treatment of choice.
Hospital Ana Costa, Santos, São Paulo, Brazil.
Carlos Eduardo Molinari
CE
Nardi
Ricardo Adriano Nasser Barbosa da
RA
Silva
Cynthia Maria Massarico
CM
Serafim
Rogério Aparecido
RA
Dedivitis
D000328:Adult; D002118:Calcium / Q000097:blood; D006801:Humans; D008297:Male; D008476:Mediastinal Cyst / Q000473:pathology* / Q000601:surgery; D010279:Parathyroid Diseases / Q000473:pathology* / Q000601:surgery
D002118:Calcium