Pathology Update: TKTL-1
After many months, we have the pathology results from Germany. The following was found after analysis of the tumor tissue post-surgery. It's somewhat involved, but it explains why we saw such strange results with FDG and Ga-68 PET scans: " Immunohistochemistry has been performed and revealed the following: Proliferation rate (Ki-67 measured using MIB1 antibody) was 10-20% in both tumors (liver metastasis and primary tumor)." "The liver metastasis did not express SSTR 2a (Somatostatin receptor Subtype 2a), and in 20 % of the cells a weak expression of SSTR 5." "There was a strong expression of TKTL1 (the marker which is correlated with FDG uptake and aggressive behavior of tumors)." "The primary tumor showed moderate expression of SSTR 2a and SSTR 5 in 80% of the cells and strong expression of TKTL1 in 70% of the cells." "What is really remarkable in this case is the different expression of the neuroendocrine markers in the prim...