Giant myxofibrosarcoma of the esophagus treated by endoscopic submucosal dissection: A case report

Figure 1 Imaging examinations. A: Gastroscopy showed that a giant mass was located 30 cm from the incisor and extended to the cardia; B: Endoscopic ultrasonography showed that the mass was located in the submucosa, had mixed echo change, and exhibited some inner cystoid structures.

Figure 2 Histologic images of the myxofibrosarcoma. A: Spindle tumor cells; B: Myxoid stroma; C: Karyokinesis; D: Positive vimentin.

Figure 3 The endoscopic submucosal dissection procedure. A: A submucosal tumor in the esophagus was found and marked; B: Mucosal injection and submucosal precut created using an insulated tip-2 knife; C: The wound surface after removal of the tumor; D: The specimen of the tumor measuring 9.0 cm × 3.0 cm.