Annual Scientific Meeting
Introduction: Endoscopic submucosal dissection (ESD) is a novel procedure that utilizes advanced surgical techniques to remove gastrointestinal tumors without the invasive nature of surgery. While there are many advantages to this procedure, one limitation that remains is that the standardization of ESD technique is yet to be well-defined, particularly in Western nations. Here, we present a case of a patient with a 30-mm anal condyloma who had complete resection of the pre-malignant lesion through ESD.
Case Description/Methods: A 73-year-old female presented for screening colonoscopy. She was found to have an anal lesion on exam, biopsies showed anal condyloma with low-grade dysplasia. Given the extension of the lesion to the distal rectum, the decision was to perform dissection of the anal condyloma from the anorectal canal.
Initially, the lesion was marked 5-6mm away from its border, to allow for dissection with clear margins. In the next step, a 25-gauge needle was used to inject a solution containing Hetastarch and methylene blue. This was done to raise the lesion away from the muscularis propria layer. A circumferential incision was made, beginning at the anal aspect of the lesion. To make the final dissection, a dissection knife with an insulated ceramic tip was used in the forward view. This allowed for secure separation of the lesion in one piece, without any tissue injury.
Discussion: A 30mm anal condyloma was procured. Pathology showed an anal condyloma with anal intraepithelial neoplasia grade I (AIN1). The lesion was negative for any high-grade dysplasia or carcinoma. Peripheral and deep margins were free of the lesion. The patient had mild rectal pain for three days after the procedure, which completely resolved with the application of lidocaine gel. ESD is a highly effective resection tool and should be considered for treatment of rectal condylomatous lesions.