Successful resection of a giant pedunculated pharyngeal liposarcoma by endoscopic submucosal dissection with countertraction using grasping forceps by Hayato Yamaguchi, MD, PhD, Masakatsu Fukuzawa, MD, PhD, Takashi Kawai, MD, PhD, Hiroki Sato, MD, PhD, Takao Itoi, MD, PhD, FASGE

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