MKI67 and neuroendocrine carcinoma: Seven (63.6%) of the patients were male; the median age was 66.7 years (range: 50.0–87.8 years), and the median Ki-67 was 90% (range: 50–100%), with the primary site of NEC as follows: three colorectal, two esophageal, two ampullary, and the remaining four at other sites.