What is the difference between paraganglioma and pheochromocytoma?

What is the difference between paraganglioma and pheochromocytoma?

Pheochromocytoma and paraganglioma are rare tumors that come from the same type of tissue. Pheochromocytoma is a rare tumor that forms in the adrenal medulla (the center of the adrenal gland). Paragangliomas form outside the adrenal gland.

What is a vagal paraganglioma?

Vagal paragangliomas are rare tumors that develop in the retrostyloid compartment of the parapharyngeal space. They arise from an island of paraganglion tissue derived from the neural crest that is located on the vagus nerve. Very occasionally vagal paragangliomas develop on the more distal part of the nerve.

Is pheochromocytoma an adenoma?

Clinically, about 80% of adrenal incidentalomas are nonfunctional, benign adrenocortical adenomas, 9% cause subclinical Cushing’s syndrome, 4% are pheochromocytomas, and only 1% are aldosteronomas. The simultaneous occurrence of a functional adrenocortical adenoma and pheochromocytoma in the same gland is rare [2,3].

Is a paraganglioma a neuroendocrine tumor?

Paraganglioma is a type of neuroendocrine tumor that forms near certain blood vessels and nerves outside of the adrenal glands.

Is a paraganglioma a brain tumor?

Paraganglioma is a type of neuroendocrine tumor that forms near certain blood vessels and nerves outside of the adrenal glands. The adrenal glands are important for making hormones that control many functions in the body and are located on top of the kidneys.

Can a CT scan detect pheochromocytoma?

Computed tomography (CT) CT scans can reveal adrenal pheochromocytomas larger than 5–10 mm with sensitivity >95% (34).

Which is rare A paraganglioma or a pheochromocytoma?

Pheochromocytomas (PCCs) and paragangliomas (PGLs) are rare but unique neuroendocrine tumors. The hypersecretion of catecholamines from the tumors can be associated with high morbidity and mortality, even when tumors are benign. Up to 40% of PCCs/PGLs are associated with germline mutations in suscep …

What are the differential diagnoses of vagal paraganglioma?

Differential diagnoses included vagal paraganglioma, schwannoma, neurofibroma, or a necrotic lymph node. The CT and MR images were reviewed at our institution’s head and neck radiology conference, with the consensus favoring a schwannoma over a paraganglioma due to the relatively homogenous appearance and lack of flow voids within the mass.

Which is better FDG or MIBG for paraganglioma?

Depending on DOTATATE findings and the clinical question, FDG and MIBG remain useful and, in selected cases, may provide more accurate staging, disease characterisation and guide treatment choices. Keywords: F-18 FDG; Ga-68 DOTATATE; PET/CT; Paraganglioma; Pheochromocytoma.

What kind of tumor is around the vagus nerve?

Vagal paragangliomas are rare neuroendocrine tumors arising from the neural crest-derived paraganglionic tissue surrounding the vagus nerve, typically presenting as a neck mass associated with hoarseness or pulsatile tinnitus.