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(A–C). Gastrointestinal stromal tumor originates/involves small bowel (A, case 4), colon (B, case 2) and omentum (C, case 13). (D–F). Representative pictures of gynecologic organ involvement: periovarian tissue (D, case 4), uterus (E, case 17) and vagina (F, case 15). Star (*) indicates the tumor. Original magnification: (A,E), ×40; (B–D,F), ×20.
