title: Concurrent nonfunctional paraganglioma of the retroperitoneum and urinary bladder: A case report with literature review.
abstract: Paragangliomas are the neuroendocrine tumors which arise from the chromaffin cell. Tumors arising from the adrenal medulla are known as pheochromocytomas, while others originating from the extra-adrenal site are known as extra-adrenal paragangliomas. Paraganglioma can be multifocal which can arise synchronously or metachronously. Paragangliomas are less functionally active than the pheochromocytomas; they secrete noradrenaline and rarely dopamine, while adrenal pheochromocytomas secrete adrenaline or nor-adrenaline. Nonfunctional multifocal paragangliomas are very rare. We report a case of a 45-year-old female with multifocal nonfunctional paragangliomas of the retroperitoneum and urinarybladder which were surgically removed, and the diagnosis was confirmed on histopathology.
authors.affiliation: Department of Radiodiagnosis, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India.
authors.forename: Poonam
authors.initials: P
authors.lastname: Sherwani
authors.affiliation: Department of Radiodiagnosis, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India.
authors.forename: Rama
authors.initials: R
authors.lastname: Anand
authors.affiliation: Department of Radiodiagnosis, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India.
authors.forename: Mahender Kaur
authors.initials: MK
authors.lastname: Narula
authors.affiliation: Department of Surgery, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India.
authors.forename: Azaz Akhtar
authors.initials: AA
authors.lastname: Siddiqui
authors.affiliation: Department of Pathology, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India.
authors.forename: Shilpi
authors.initials: S
authors.lastname: Aggarwal
keywords: Imaging; neuroendocrine; paraganglioma; pheochromocytoma; retroperitoneum