title: Malignant non-chromaffin paraganglioma (report of two cases).
mesh_terms: D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D010236:Paraganglioma, Extra-Adrenal; D012186:Retroperitoneal Neoplasms; D013848:Thigh