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A paraganglioma is a rare neuroendocrine neoplasm that may develop at various body sites (including the head, neck, thorax and abdomen). When the same type of tumor is found in the adrenal gland, they are referred to as a pheochromocytoma .
In a 50-year autopsy case series, the Mayo Clinic reviewed 54 pheochromocytoma cases between 1928–1977 and discovered that just 24% of the patients were correctly diagnosed prior to their death. [ needs update ] [ non-primary source needed ] [ 171 ] Outside of the United States, several countries have documented their own epidemiological ...
Parasympathetic ganglia are the autonomic ganglia of the parasympathetic nervous system. Most are small terminal ganglia or intramural ganglia, so named because they lie near or within (respectively) the organs they innervate. The exceptions are the four paired parasympathetic ganglia of the head and neck.
Peripheral nerve tumors [5] [2]; Tumor type Malignancy Estimated incidence Location Schwannoma Benign 1.09 per 100,000/year Skin and subcutaneous tissues of the head and neck, or along the flexor surfaces of the extremities
Parasympathetic innervation of the heart is partially controlled by the vagus nerve and is shared by the thoracic ganglia. Vagal and spinal ganglionic nerves mediate the lowering of the heart rate. The right vagus branch innervates the sinoatrial node. In healthy people, parasympathetic tone from these sources is well-matched to sympathetic tone.
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M8680/3 paraganglioma, malignant M8681/1 Sympathetic paraganglioma M8682/1 Parasympathetic paraganglioma M8683/0 Gangliocytic paraganglioma (C17.0) M8690/1 Glomus jugulare tumor, NOS (C75.5) Jugular/jugulotympanic paranglioma; M8691/1 Aortic body tumor (C75.5) Aortic/aorticopulmonary paraganglioma; M8692/1 Carotid body tumor/paraganglioma (C75.4)
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