Clinical Endoscopy

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Predictors of Inadequate Bowel Preparation and Salvage Options on Colonoscopy: Ju Sung Sim, Ja Seol Koo; Clin Endosc 2016;49(4):346-349. Published online July 29, 2016; DOI: https://doi.org/10.5946/ce.2016.094

Inadequate bowel preparation is observed in more than 25% of all colonoscopies. Identification of predictive factors for inadequate colon cleaning is helpful and more detailed preparation methods should be used for patients at high risk. Age, male sex, inpatient status, and comorbidities were identified as independent risk factors in several previous studies. In patients with insufficient colon preparation, colon irrigation with endoscopic pumps or next-day colonoscopy following further bowel cleaning should be performed. In order to improve the efficacy and safety of both bowel preparation and colonoscopy, the endoscopic team should identify the patient’s medical conditions and choose the optimal bowel preparation agent and regimen.

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Case Report

Melanocytic Nevus on the Rectal Mucosa Removed Using Endoscopic Submucosal Dissection: Seong Min Kim, Yoon Ji Shin, Ju Sung Sim, Beon Jae Lee, Moon Kyung Joo, Jong-Jae Park, Young-Tae Bak; Clin Endosc 2016;49(4):391-394. Published online March 21, 2016; DOI: https://doi.org/10.5946/ce.2015.126

Abstract PDF PubReader ePub: Melanocytic nevus is the benign proliferation of melanocytes. The most common location of melanocytic nevus is the skin of the extremities; however, there are few case reports of melanocytic nevus at the rectal mucosa. No prior case of malignant melanoma from melanocytic nevus at the rectal mucosa has been reported; therefore, it is unclear whether resection should be performed or close observation is sufficient. However, the potential malignant transformation of melanocytic nevus should be considered, including melanocytic nevus on the rectum. Melanocytic nevus of the skin can be removed by surgical excision; however, due to rare incidence on the mucosa of the gastrointestinal tract, the optimal treatment for rectal melanocytic nevus remains controversial. Here, we report the first case of melanocytic nevus on the rectal mucosa that was removed by endoscopic submucosal dissection. This case report provides useful information about the optimal management of rectal melanocytic nevus.

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