Plexiform angiomyxoid myofibroblastic tumor treated by endoscopic submucosal dissection: A case report and review of the literature

Figure 1  Lesions under endoscopy before and after biopsy. A: Image of the lesion before biopsy; B: Image of the lesion after biopsy.

Figure 2  Rich blood flow in the lesion under Doppler ultrasound. A: Endoscopic ultrasonography revealed that the lesion originated from the submucosal layer, which was heterogeneous and hyperechoic, and the posterior muscularis propria and serosal surface were present; B: The blood flow was abundant on Doppler ultrasound.

Figure 3  Hematoxylin and eosin staining of the biopsy revealed spindle cell proliferative lesions with interstitial mucinous changes, and the surface mucosa showed chronic inflammatory changes with active lesions. A: Magnification: 10 ×; B: Magnification: 40 ×.

Figure 4  Images of peeled tissue, lesion size, and clipping under endoscopy. A: The wound after endoscopic submucosal dissection (ESD); B: Resected tissue: 5 cm × 4 cm × 2 cm; C: The ulcer scar of the wound 3 mo after ESD.

Figure 5  Abundant slender blood vessels, rich mucus-like mesenchyme and spindle-shaped, fat spindle-shaped fibroblasts, and myofibroblast-like cells showing irregular nodular hyperplasia. A: Magnification: 20 ×; B: Magnification: 10 ×.