Introduction: Early diagnosis and grading is essential to the treatment decision-making in neuroendocrine tumors. Conventionally, proliferation rate (Ki-67) level is used for the grading of NET. Ga-68 SMS-R PET/CT is the imaging method of choice for the detection of unknown primary neuroendocrine tumors. It is very sensitive in well-differentiated tumors (Ki-67 < 2%). Poorly and undifferentiated tumors having Ki-67 greater than 20% are primarily responsible for false negativity of Ga-68 SMS-R PET/CT. In those patients, FDG-PET is performed to localize the site of the primary tumor.
Conference: 11th Annual ENETS Conference 2014 (2014)
Category: Clinical cases/reports
Presenting Author: Dr. Zeinab A Abou Yehia