Fig. 4From: A case of planar-type GIST of the sigmoid colon showing diverticular structure with perforationMutational analysis of the c-kit gene using histological specimens. a The proliferating spindle cell lesion had a heterozygous deletion of 2 amino acids of codons 557 and 558 at exon 11 of the c-kit gene. b Surrounding normal mucosal tissue showed a wild-type sequence for the c-kit geneBack to article page