Abstract
Paragangliomas are rare tumors arising from undifferentiated cells of the primitive neural crest. We present a 43-year-old male patient with a glomus tumor in the left carotid space and a retroperitoneal tumor with bone metastases, with invasion of the left renal vein in the left paraaortic area posterior to the third part of the duodenum. Serum epinephrine and norepinephrine levels were high. A CT-guided trucut biopsy was performed from this lesion, and histopathological examination and immunohistochemical analyzes concluded the diagnosis of retroperitoneal paraganglioma. The tumor was judged to be secretive and inoperable; therefore, it was decided to treat it with radiotherapy and systemic chemotherapy.
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