Flatly proliferating KIT-positive ICC lesions may also be detected at the myenteric plexus layer of the small intestine in neurofibromatosis type 1 (NF1) patients [10], but the present patient did not show any apparent signs of NF1 such as multiple skin neurofibromas and café au lait spots. This evidence concerns the gene KIT and Cafe-au-lait spot.