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Eur J Surg Oncol
December 2024
Islamic International Medical College, Peshawar Road, Rawalpindi, 44000, Pakistan. Electronic address:
JNCI Cancer Spectr
January 2025
Section on Medical Neuroendocrinology National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, 20892, MD, USA.
Head and neck paragangliomas (HNPGLs) are typically slow-growing, hormonally inactive tumors of parasympathetic paraganglia. Inactivation of prolyl-hydroxylase domain-containing 2 protein causing indirect gain-of-function of hypoxia-inducible factor-2α (HIF-2α), encoded by EPAS1, was recently shown to cause carotid body hyperplasia. We previously described a syndrome with multiple sympathetic paragangliomas caused by direct gain-of-function variants in EPAS1 (Pacak-Zhuang syndrome, PZS) and developed a corresponding mouse model.
View Article and Find Full Text PDFLaryngoscope Investig Otolaryngol
February 2025
Division of Otolaryngology - Head and Neck Surgery, Department of Surgery Dalhousie University Halifax Nova Scotia Canada.
Objective: Carotid body tumors (CBTs) are rare neoplasms of the paraganglia at the carotid bifurcation. While typically benign, CBTs occasionally exhibit malignancy, metastasizing to nearby lymph nodes. Histopathologic analysis alone is insufficient to confirm malignancy, requiring metastases to non-neuroendocrine tissue for a definitive diagnosis.
View Article and Find Full Text PDFInt J Surg Case Rep
January 2025
Neurosurgery Section, Department of Surgery, The Aga Khan Hospital, P. O Box 2289, Dar Es Salaam, Tanzania.
Introduction And Importance: Paragangliomas are rare neuroendocrine tumors, typically arising from extra-adrenal chromaffin cells. Primary intra-spinal paragangliomas are uncommon, and metastatic spinal paragangliomas without paraneoplastic symptoms are even rarer. This case highlights the diagnostic challenges posed by such rare tumors.
View Article and Find Full Text PDFVasc Endovascular Surg
January 2025
Department of Surgery, Section of Vascular Surgery and Endovascular Therapy, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
Background: Carotid body tumor (CBT) is a rare neoplasm that arises from the chemoreceptor cells located at the carotid bifurcation. Giant CBTs are extremely rare, with only 16 cases reported to date.
Case Summary: A 63-year-old male with an unremarkable medical history presented with a right-sided, giant, Shamblin III CBT.
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