In line with the aforementioned reports, we used old FFPE blocks, of which 17/39 were more than two years old (on a ten-year-old block, we carried out a double ALK assessment on a surgical specimen and concomitant lymph node metastasis), and, in addition, for the first time, we demonstrated that sections prepared and stored for several days may still be valid for determination with Idylla. This evidence concerns the gene ALK and metastatic malignant neoplasm in the lymph nodes.