An 81-year-old female consulted a local physician due to @entity294 . Since general @entity1295 and body weight loss were observed, she was admitted for detailed examination and treatment. Colonoscopy revealed a circumferential @entity5 with a maximum diameter of 10 cm in the rectum, and biopsy findings indicated @entity5493 . The @entity5 secreted a large amount of mucus, and a diagnosis of @entity58845 causing electrolyte disorders was made. We performed endoscopic submucosal dissection (ESD) as a less invasive procedure. The @entity5 was so big that the procedure had to be completed in two separate steps and it took 1,381 min in total. The @entity5 was histologically diagnosed as well-differentiated @entity420 in high-grade @entity652 located in the lower to upper rectum, invading into the mucosa without lymphatic or venous invasion. The stump of the resected specimen was negative for @entity420 , however the horizontal stump was positive for @entity652 . We administered @entity479 suppositories to prevent @entity850 . After ESD, general @entity1295 and @entity294 disappeared and electrolyte disorders resolved. The @entity1 had good clinical outcome without recurrence or @entity850 .

Complete Endoscopic Submucosal Dissection of a Giant Rectal @entity420 with XXXX .

@entity1 :: ('9606', 'Species') :: ['patient'] @entity5493 :: ('MESH:D018253', 'Disease') :: ['villous adenoma'] @entity850 :: ('MESH:D003251', 'Disease') :: ['stenosis'] @entity5 :: ('MESH:D009369', 'Disease') :: ['giant tumor', 'tumor'] @entity294 :: ('MESH:D003967', 'Disease') :: ['diarrhea'] @entity1295 :: ('MESH:D005221', 'Disease') :: ['fatigue'] @entity58845 :: ('MESH:D014883', 'Disease') :: ['electrolyte depletion syndrome'] @entity652 :: ('MESH:D000236', 'Disease') :: ['adenoma'] @entity420 :: ('MESH:D000230', 'Disease') :: ['adenocarcinoma'] @entity479 :: ('D013256', 'Chemical') :: ['steroid']
@entity58845 :: (MESH:D014883,Disease) :: ['Electrolyte Depletion Syndrome']
