Double-balloon enteroscopy for mesenchymal tumors of small bowel: Nine years’ experience

Figure 1 Unsmooth surface of verified gastrointestinal mesenchymal tumors, showing the appearance of erosion or ulcer. A, B, F: Ulcerative lesions in the surface of the tumors; C, D, E: Ulcerative and depressed pits (A-D: Gastrointestinal mesenchymal tumor; E: Leiomyoma; F: Lipoma).

Figure 2 Morphology of verified tumors with smooth surface, indicating tumors with sessile base in round or oval shape. A-C: Single tumor with round shape and smooth surface (A, B: Gastrointestinal mesenchymal tumor; C: Lipoma; D: A polyp-like tumor with expanded tail, and hemangioma was confirmed by post-surgical pathology).