Ann Clin Radiol | Volume 1, Issue 1 | Case Report | Open Access

Blockage of Sulfur Colloid Migration on Lymphoscintigraphy and Intravascular Focus on FDG PET/CT Secondary to an Occluded Hemodialysis Fistula

Yiyan Liu^*

Department of Radiology, Nuclear Medicine Service, New Jersey Medical School, Rutgers University, USA

^*Correspondance to: Yiyan Liu 

Abstract

An unused, occluded arteriovenous fistula may pose an imaging pitfall and interpretive dilemma. On lymphoscintigraphy for the axillary sentinel node mapping in a 51-year-old man with newly diagnosed sebaceous carcinoma of the left forearm and an unused arteriovenous fistula for previous hemodialysis in the left arm, sulfur colloid migration was blocked in the fistula site due to disruption of lymphatic draining. Postoperative FDG PET/CT demonstrated an intravascular focus within the cephalic vein of the left distal arm. Subsequent duplex ultrasound showed an occluded hemodialysis fistula in the left arm, without evidence of tumor thrombosis. The focus of FDG activity within the cephalic vein was from the thrombus in the occluded fistula.

Keywords:

FDG PET/CT; Lymphoscintigraphy; Arteriovenous fistula

Citation:

Liu Y. Blockage of Sulfur Colloid Migration on Lymphoscintigraphy and Intravascular Focus on FDG PET/CT Secondary to an Occluded Hemodialysis Fistula. Ann Clin Radiol. 2017; 1(1): 1003.