[Primary malignant chemodectoma of lung (author's transl)].

Intrathoracic chemodectomas are usually localized in the mediastinum. Primary solitary chemodectomas of the lung are very sparse. All cases of primary lung chemodectomas are described as non malignant tumors in literature. The morphological (light microscopy, enzyme histochemistry and enzyme cytochemistry) changes of a malignant chemodectoma of lung with metastases in regionar lymph nodes are reported in detail.