case_images: PMC11021105_01
case_images: A 82-year-old male presented with the chief complaint of a mass on the left side of his neck and associated complaints of sore throat, weight loss, and dysphagia. Axial (a) and coronal (b) computed tomography imaged show a large heterogeneous left neck mass adjacent to the thyroid with surrounding edema (red arrows).
case_images: JCIS-14-9-g001.jpg
case_images: PMC11021105_01_JCIS-14-9-g001.jpg
case_images: F1
case_images: Computed tomography (CT) of the neck showed a large heterogeneous mass in the left visceral space adjacent to the thyroid gland, with surrounding edema [Figure 1].
case_images: A 82-year-old male presented with the chief complaint of a mass on the left side of his neck and associated complaints of sore throat, weight loss, and dysphagia. Color Doppler ultrasound obtained during biopsy shows absent flow and heterogeneous echogenicity of the encapsulated mass (red arrow).
case_images: JCIS-14-9-g002.jpg
case_images: PMC11021105_01_JCIS-14-9-g002.jpg
case_images: F2
case_images: Ultrasound also showed a heterogeneous mass without significant internal vascularity [Figure 2].
case_images: A 82-year-old male underwent resection of the left neck mass. Hematoxylin and eosin-stained histopathology image at x40 magnification shows areas of hypercellular parathyroid glandular tissue (asterisk) adjacent to areas of necrosis and hemorrhage (black arrows).
case_images: JCIS-14-9-g003.jpg
case_images: PMC11021105_01_JCIS-14-9-g003.jpg
case_images: F3
case_images: The specimens were sent for histologic examination, which revealed that the central component of the mass was entirely necrotic, but there was a rim of viable cells at the periphery [Figure 3], with associated fibrosis causing adherence to the thyroid lobe.