Pulmonary Chemodectomatosis

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Abstract
FOR MANY YEARS, tumors of the carotid body occupied a unique position among the so-called nonchromaffin paragangliomas, although paraganglionic or, as we prefer to call it, glomic tissue had long been known to occur in other places, eg, in relation to the ascending aorta and the main pulmonary artery. In recent years, reports have appeared about solitary mediastinal neoplasms arising from these aortic and pulmonary glomera or from within the lung proper.1-3Glomic tissue is chemoreceptive and phylogenetically traceable to the vessels supplying gills and thus follows branchial arteries and their sensory nerves (Fig 1). The Roman numerals in the right half of the diagram show the correlation of glomic tissue with branchial arteries (I and II are hypothetical); those in the left half refer to the glossopharyngeal and vagus nerves (the nervous connections of the ciliary glomus are a matter of conjecture). The letters stand for (a) ciliary,

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