68Ga-DOTATOC Embolus Manifestation and Spontaneous Resolution by PET/CT

Nucl Med Mol Imaging. 2022 Aug;56(4):208-210. doi: 10.1007/s13139-022-00752-8. Epub 2022 May 12.

Abstract

68Ga-labeled somatostatin receptor analogs physiologic distribution patterns have become recognizable among nuclear medicine physicians because of the increasing routine clinical use of this modality in the work-up of neuroendocrine tumors. Some pitfalls during 68Ga-labeled somatostatin receptor PET/CT have recently been reported as causes of misdiagnoses. Iatrogenic microembolism as a cause of 18F-FDG embolus is well-established; however, 68Ga-DOTATOC embolus is not well documented in the literature. In the current case, the presence and the spontaneous resolution of the 68Ga-labeled somatostatin receptor analogs embolus during sequential PET/CT are nicely demonstrated. Awareness of this incidental finding would avoid misdiagnosis and unnecessary investigations.

Keywords: 68Ga-labeled somatostatin receptor analogs; Embolus; PET/CT; Pulmonary microembolism.