title: Pitfall in MR imaging of lymphadenopathy after lymphangiography.
abstract: In two patients examined with magnetic resonance (MR) imaging after lymphangiography, opacified pelvic lymph nodes could not be distinguished from subcutaneous or retroperitoneal fat because of the short T1 and long T2 relaxation times of lymphangiographic contrast media. Opacified nodes removed from one patient had relaxation times similar to those of fat. Thus, assessment of lymphadenopathy with MR imaging should be performed before lymphangiography to obviate this potential pitfall.
mesh_terms: D003287:Contrast Media / Q000009:adverse effects; D004998:Ethiodized Oil / Q000009:adverse effects; D005260:Female; D008206:Lymphatic Diseases / Q000175:diagnosis*; D008220:Lymphography / Q000009:adverse effects*; D009682:Magnetic Resonance Spectroscopy; D002583:Uterine Cervical Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging
chemical_list: D003287:Contrast Media; D004998:Ethiodized Oil