ILENT extra-adrenal retroperitoneal paragangli-omas (PGLs) arise from dispersed paraganglias which tend to be symmetrically distributed in close relation to the aorta and sympathetic nervous system. They are rarely encountered in everyday surgical practice. Together with the absence of typical symptoms of catecholamine excess such as headache, palpitations, diaphoresis, and anxiety, the diagnosis of such tumors is a significant challenge, and it is usually delayed until an advanced stage of the disease- This delay may contribute to the development of malignant disease. As a result, silent extra-adrenal retroperitoneal PGLs are rare tumors causing considerable difficulty in both diagnosis and treatment.