Extraadrenal retroperitoneal paraganglioma: clinical, pathologic, and CT findings.

Abstract

ParagangliomasHowever, no CT feature was found that was unique for paraganglioma.

Local Recurrence of Retroperitoneal Paraganglioma Treated Laparoscopically

“…For those patients with nonfunctional extra-adrenal retroperitoneal paraganglioma, diagnosis usually depends on nonspecific factors related to the growth of a retroperitoneal mass. 1 In the present case, endocrinologic examination demonstrated slightly high levels of serum noradrenalin, serum aldosterone, urine noradrenalin, and urine dopamine; however, the patient did not have symptoms that were caused by excess secretion of catecholamines. It is possible that in our case, we detected the growth of a retroperitoneal mass before the characteristic symptoms appeared.…”

“…Paragangliomas can arise anywhere in the sympathetic and parasympathetic chain of the ganglia with the most common site in the sympathetic nervous system being para-aortic. 1 A paraganglioma may be of 2 types: (1) functional (sympathetic chromaffin paraganglioma/pheochromocytoma), as catecholamine-secret- ing tumors, hence appearing with typical symptoms such as paroxysmal hypertension, heart palpitations, headache attacks, and sweating or (2) parasympathetic nonfunctional neoplasias characterized as those lacking in chromaffin cells.…”

Paraganglioma: A Case Report

“…1 Men are affected more frequently than women and most patients are between the age of 30-45 years. 6 CT, MRI or ultrasonographic studies are sensitive in detecting a retroperitoneal mass and could delineate its location, outline, internal structure as well as its relationship with the surrounding organs. In addition, histopathological diagnosis is required to define the paraganglioma as benign or malignant tumours exhibit similar clinical diagnosis and imaging findings.…”

Retroperitoneal Paraganglioma Mimicking Lymph Node Metastasis in an Endometrial Cancer Patient: Case Report

“…But other hallmarks on CT overlaps with other tumors and nondiagnostic for nonfunctional paraganglioma. 8 This explains why nonfunctional paragangliomas are mostly inciden- tal findings on final pathologic reports. Regarding PET-CT evaluation, functional status of the tumor could not be predicted by FDG uptake level, however malignant lesions had higher FDG uptake than benign lesions.…”