Intrapericardial paragangliomas (pheochromocytomas): imaging features.
OBJECTIVE
The imaging features of intrapericardial paragangliomas (pheochromocytomas) are described.


METHODS
We conducted a retrospective study of the imaging features of all intrapericardial paragangliomas seen at our institution over the last 13 years.


RESULTS
In this study, intrapericardial paragangliomas were typically located adjacent to or involved the left atrium. The diameter of the tumors ranged from 3 to 8 cm. Metaiodobenzylguanidine (MIBG) scintigraphy revealed 11 of 12 tumors (sensitivity = 92%). After MIBG scintigraphic location, dynamic contrast-enhanced CT revealed all 12 tumors.


CONCLUSIONS
Intrapericardial paragangliomas are rare tumors, typically located adjacent to or involving the left atrium. For initial detection, regional location of these extraadrenal tumors, and detection of distant metastases, MIBG scintigraphy is recommended. Dynamic contrast-enhanced CT or MR imaging can then provide detailed anatomic delineation before surgical resection.
Hamilton
B H
BH
Department of Radiology, University of Michigan Hospitals, Ann Arbor 48109-0030, USA.
Francis
I R
IR
Gross
B H
BH
Korobkin
M
M
Shapiro
B
B
Shulkin
B L
BL
Deeb
C M
CM
Orringer
M B
MB
D019797:3-Iodobenzylguanidine; D000328:Adult; D003287:Contrast Media; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging; D006325:Heart Atria; D006338:Heart Neoplasms / Q000175:diagnosis* / Q000453:epidemiology; D006801:Humans; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010673:Pheochromocytoma / Q000175:diagnosis* / Q000453:epidemiology; D011877:Radionuclide Imaging; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D019797:3-Iodobenzylguanidine