Laparoscopic rectal tumor surgery after administration of a new sclerosing therapy (aluminum potassium sulfate and tannic acid injection) for internal hemorrhoids: A report of three cases

Abstract

Aluminum potassium sulfate and tannic acid (ALTA) injection is a new sclerosing therapy for internal hemorrhoids that has been gaining widespread use. However, there have been few reports about rectal cancer after ALTA injection. We performed laparoscopic surgery for three patients who had underwent ALTA therapy 6 months or 1 year earlier: (i) a 51‐year‐old man with neuroendocrine tumor; (ii) a 44‐year‐old woman with rectal cancer; and (iii) 77‐year‐old man with rectal cancer. All three patients had sclerosis of the resected rectal wall stump, making transection of the rectum difficult. Histological examination of the specimens also showed an inflammatory reaction and/or fibrosis of the resection stump. Although laparoscopic low anterior resection was planned for all three patients, we had to construct a diverting stoma for two patients and could not perform sphincter‐preserving surgery for the other. We must be well prepared for laparoscopic rectal surgeries after ALTA therapy, and these cases suggest sigmoidoscopy before ALTA therapy should be recommended.

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