MKI67 and neuroendocrine carcinoma: The histology report should include a minimum set of criteria, including (1) a macroscopic description of the surgical specimen with exact anatomical site, margins distance, and size of the lesion, (2) a microscopic description with supporting immunohistochemistry, mitotic count, Ki-67 index, node-, and margin status, and (3) diagnosis with distinction between NET and NEC, grade, and TNM stage (Table 2).