Paraganglioma
（重定向自Carotid body tumor）
![](/Images/godic/202501/03/Carotid_body_tumour_2_intermed_mag0232.jpg")
![Mediastinal paraganglioma. The cut surface of a 3.9 x 3.5 x 2.5 cm tumor is triangular, with a bulging peripheral portion and a somewhat fibrotic center. It was surrounded by the heart, left lower lobe of the lung, aorta, esophagus, and diaphragm, and had been 1.8 cm in diameter 7 years before.](/Images/godic/202501/03/Mediastinal_paraganglioma0232.jpg")
![Micrograph of a carotid body tumor with the characteristic Zellballen. H&E stain.](/Images/godic/202501/03/Carotid_body_tumour_2_high_mag0232.jpg")
![](/Images/godic/202501/03/Tumor_Glomus_Jugulare0232.jpg")
A paraganglioma is a rare neuroendocrine neoplasm that may develop at various body sites (including the head, neck, thorax and abdomen). About 97% are benign and cured by surgical removal; the remaining 3% are malignant because they are able to produce distant metastases. "Paraganglioma" is now the most-widely accepted term for these lesions, that have been also described as: glomus tumor, chemodectoma, perithelioma, fibroangioma, and sympathetic nevi.