Fig. 3
From: Unusual presentations of functional parathyroid cysts: a case series and review of the literature
Patient 3. a Cervical ultrasound and longitudinal view of a large cyst. b Technetium 99 m sesta methoxyisobutylisonitrile scintigraphy with single-photon emission computed tomography-computed tomography. A central “cold” area (white arrow) corresponding to the parathyroid cyst is surrounded by faint tracer retention (red arrows) corresponding to the displaced parathyroid parenchyma. c Left thyroid lobe en bloc with the parathyroid cyst. A Cyst, B upper part of otherwise normal looking thyroid gland, C isthmus, D thymic remnant