1.Treatment of a Large Gastric Phytobezoar With Coca-Cola, Cellulase, and Endoscopic Fragmentation in a Community Hospital
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2025;25(1):73-77
Bezoars are indigestible masses that can cause gastrointestinal complications such as obstructions and perforations. We report the case of a 60-year-old man with a history of type 2 diabetes mellitus and duodenal ulcer surgery. The patient developed a large gastric phytobezoar that caused persistent dyspepsia and epigastric pain. Upper endoscopy confirmed a 10-cm phytobezoar and a 1.5-cm active ulcer at the gastric angle. To soften the bezoar, Coca-Cola and cellulase were administered to the patient. This treatment significantly reduced the bezoar’s hardness, permitting its successful endoscopic fragmentation using conventional devices. Over three endoscopic sessions, the bezoar was fragmented into pieces smaller than 1 cm and removed; thereafter, the gastric ulcer healed completely. This case illustrates the effectiveness of combining the actions of Coca-Cola and cellulase with endoscopic methods to treat large bezoars, providing an alternative to surgical approaches in community healthcare settings.
2.Association of weight and dietary habits with high blood mercury levels in Korean adolescents: data from the KoNEHS cycle 4, 2018-2020
Ji Hoon KIM ; Minju JUNG ; Jaewon MUN ; Dong-Jae SEO ; Jong-Han LEEM ; Shin-Goo PARK ; Dong-Wook LEE ; Hyung Doo KIM ; Hwan-Cheol KIM
Annals of Occupational and Environmental Medicine 2025;37(1):e5-
Background:
Humans are exposed to mercury primarily in its highly toxic form, methyl mercury, which is known to have adverse effects on various organs and systems. The negative impact of mercury exposure on the growth, development, and mental health of children, from infancy to adolescence, is well-documented. However, there are no internationally standardized safe limits for mercury exposure. This study investigated the impact of dietary habits and higher body mass index (BMI) on blood mercury levels in adolescents.
Methods:
This study analyzed the data from the 4th Korean National Environmental Health Survey (KoNEHS) 2018–2020. The focus was on 825 middle and high school students aged 13–18 years, whose blood mercury levels were measured. A survey on dietary and lifestyle habits was also conducted. Blood mercury levels were categorized by geometric median values, and associations with overweight status and seafood consumption were examined using a generalized linear model.
Results:
The geometric mean blood mercury level for the entire sample was 1.37 μg/L, with levels of 1.31 μg/L in normal-weight individuals and 1.43 μg/L in overweight individuals, showing a statistically significant difference between the two groups. After adjusting for other variables, blood mercury levels were significantly associated with overweight status (estimate: 0.084; p = 0.018; 95% confidence interval [CI]: 0.015–0.153), consumption of large fish and tuna more than once a week (estimate: 0.18; p = 0.001; 95% CI: 0.077–0.284), and consumption of fish once a week or more (estimate: 0.147; p = 0.004; 95% CI: 0.043–0.250).
Conclusions
In adolescents, a higher BMI and an increased consumption of large fish, tuna, and fish were associated with higher blood mercury levels. Notably, a stronger association was found between large fish consumption and blood mercury levels in the overweight group. These findings suggest the need to moderate seafood consumption and establish more proactive mercury exposure standards for adolescents.
3.Treatment of a Large Gastric Phytobezoar With Coca-Cola, Cellulase, and Endoscopic Fragmentation in a Community Hospital
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2025;25(1):73-77
Bezoars are indigestible masses that can cause gastrointestinal complications such as obstructions and perforations. We report the case of a 60-year-old man with a history of type 2 diabetes mellitus and duodenal ulcer surgery. The patient developed a large gastric phytobezoar that caused persistent dyspepsia and epigastric pain. Upper endoscopy confirmed a 10-cm phytobezoar and a 1.5-cm active ulcer at the gastric angle. To soften the bezoar, Coca-Cola and cellulase were administered to the patient. This treatment significantly reduced the bezoar’s hardness, permitting its successful endoscopic fragmentation using conventional devices. Over three endoscopic sessions, the bezoar was fragmented into pieces smaller than 1 cm and removed; thereafter, the gastric ulcer healed completely. This case illustrates the effectiveness of combining the actions of Coca-Cola and cellulase with endoscopic methods to treat large bezoars, providing an alternative to surgical approaches in community healthcare settings.
4.Treatment of a Large Gastric Phytobezoar With Coca-Cola, Cellulase, and Endoscopic Fragmentation in a Community Hospital
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2025;25(1):73-77
Bezoars are indigestible masses that can cause gastrointestinal complications such as obstructions and perforations. We report the case of a 60-year-old man with a history of type 2 diabetes mellitus and duodenal ulcer surgery. The patient developed a large gastric phytobezoar that caused persistent dyspepsia and epigastric pain. Upper endoscopy confirmed a 10-cm phytobezoar and a 1.5-cm active ulcer at the gastric angle. To soften the bezoar, Coca-Cola and cellulase were administered to the patient. This treatment significantly reduced the bezoar’s hardness, permitting its successful endoscopic fragmentation using conventional devices. Over three endoscopic sessions, the bezoar was fragmented into pieces smaller than 1 cm and removed; thereafter, the gastric ulcer healed completely. This case illustrates the effectiveness of combining the actions of Coca-Cola and cellulase with endoscopic methods to treat large bezoars, providing an alternative to surgical approaches in community healthcare settings.
5.Association of weight and dietary habits with high blood mercury levels in Korean adolescents: data from the KoNEHS cycle 4, 2018-2020
Ji Hoon KIM ; Minju JUNG ; Jaewon MUN ; Dong-Jae SEO ; Jong-Han LEEM ; Shin-Goo PARK ; Dong-Wook LEE ; Hyung Doo KIM ; Hwan-Cheol KIM
Annals of Occupational and Environmental Medicine 2025;37(1):e5-
Background:
Humans are exposed to mercury primarily in its highly toxic form, methyl mercury, which is known to have adverse effects on various organs and systems. The negative impact of mercury exposure on the growth, development, and mental health of children, from infancy to adolescence, is well-documented. However, there are no internationally standardized safe limits for mercury exposure. This study investigated the impact of dietary habits and higher body mass index (BMI) on blood mercury levels in adolescents.
Methods:
This study analyzed the data from the 4th Korean National Environmental Health Survey (KoNEHS) 2018–2020. The focus was on 825 middle and high school students aged 13–18 years, whose blood mercury levels were measured. A survey on dietary and lifestyle habits was also conducted. Blood mercury levels were categorized by geometric median values, and associations with overweight status and seafood consumption were examined using a generalized linear model.
Results:
The geometric mean blood mercury level for the entire sample was 1.37 μg/L, with levels of 1.31 μg/L in normal-weight individuals and 1.43 μg/L in overweight individuals, showing a statistically significant difference between the two groups. After adjusting for other variables, blood mercury levels were significantly associated with overweight status (estimate: 0.084; p = 0.018; 95% confidence interval [CI]: 0.015–0.153), consumption of large fish and tuna more than once a week (estimate: 0.18; p = 0.001; 95% CI: 0.077–0.284), and consumption of fish once a week or more (estimate: 0.147; p = 0.004; 95% CI: 0.043–0.250).
Conclusions
In adolescents, a higher BMI and an increased consumption of large fish, tuna, and fish were associated with higher blood mercury levels. Notably, a stronger association was found between large fish consumption and blood mercury levels in the overweight group. These findings suggest the need to moderate seafood consumption and establish more proactive mercury exposure standards for adolescents.
6.Treatment of a Large Gastric Phytobezoar With Coca-Cola, Cellulase, and Endoscopic Fragmentation in a Community Hospital
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2025;25(1):73-77
Bezoars are indigestible masses that can cause gastrointestinal complications such as obstructions and perforations. We report the case of a 60-year-old man with a history of type 2 diabetes mellitus and duodenal ulcer surgery. The patient developed a large gastric phytobezoar that caused persistent dyspepsia and epigastric pain. Upper endoscopy confirmed a 10-cm phytobezoar and a 1.5-cm active ulcer at the gastric angle. To soften the bezoar, Coca-Cola and cellulase were administered to the patient. This treatment significantly reduced the bezoar’s hardness, permitting its successful endoscopic fragmentation using conventional devices. Over three endoscopic sessions, the bezoar was fragmented into pieces smaller than 1 cm and removed; thereafter, the gastric ulcer healed completely. This case illustrates the effectiveness of combining the actions of Coca-Cola and cellulase with endoscopic methods to treat large bezoars, providing an alternative to surgical approaches in community healthcare settings.
7.Association of weight and dietary habits with high blood mercury levels in Korean adolescents: data from the KoNEHS cycle 4, 2018-2020
Ji Hoon KIM ; Minju JUNG ; Jaewon MUN ; Dong-Jae SEO ; Jong-Han LEEM ; Shin-Goo PARK ; Dong-Wook LEE ; Hyung Doo KIM ; Hwan-Cheol KIM
Annals of Occupational and Environmental Medicine 2025;37(1):e5-
Background:
Humans are exposed to mercury primarily in its highly toxic form, methyl mercury, which is known to have adverse effects on various organs and systems. The negative impact of mercury exposure on the growth, development, and mental health of children, from infancy to adolescence, is well-documented. However, there are no internationally standardized safe limits for mercury exposure. This study investigated the impact of dietary habits and higher body mass index (BMI) on blood mercury levels in adolescents.
Methods:
This study analyzed the data from the 4th Korean National Environmental Health Survey (KoNEHS) 2018–2020. The focus was on 825 middle and high school students aged 13–18 years, whose blood mercury levels were measured. A survey on dietary and lifestyle habits was also conducted. Blood mercury levels were categorized by geometric median values, and associations with overweight status and seafood consumption were examined using a generalized linear model.
Results:
The geometric mean blood mercury level for the entire sample was 1.37 μg/L, with levels of 1.31 μg/L in normal-weight individuals and 1.43 μg/L in overweight individuals, showing a statistically significant difference between the two groups. After adjusting for other variables, blood mercury levels were significantly associated with overweight status (estimate: 0.084; p = 0.018; 95% confidence interval [CI]: 0.015–0.153), consumption of large fish and tuna more than once a week (estimate: 0.18; p = 0.001; 95% CI: 0.077–0.284), and consumption of fish once a week or more (estimate: 0.147; p = 0.004; 95% CI: 0.043–0.250).
Conclusions
In adolescents, a higher BMI and an increased consumption of large fish, tuna, and fish were associated with higher blood mercury levels. Notably, a stronger association was found between large fish consumption and blood mercury levels in the overweight group. These findings suggest the need to moderate seafood consumption and establish more proactive mercury exposure standards for adolescents.
8.Treatment of a Large Gastric Phytobezoar With Coca-Cola, Cellulase, and Endoscopic Fragmentation in a Community Hospital
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2025;25(1):73-77
Bezoars are indigestible masses that can cause gastrointestinal complications such as obstructions and perforations. We report the case of a 60-year-old man with a history of type 2 diabetes mellitus and duodenal ulcer surgery. The patient developed a large gastric phytobezoar that caused persistent dyspepsia and epigastric pain. Upper endoscopy confirmed a 10-cm phytobezoar and a 1.5-cm active ulcer at the gastric angle. To soften the bezoar, Coca-Cola and cellulase were administered to the patient. This treatment significantly reduced the bezoar’s hardness, permitting its successful endoscopic fragmentation using conventional devices. Over three endoscopic sessions, the bezoar was fragmented into pieces smaller than 1 cm and removed; thereafter, the gastric ulcer healed completely. This case illustrates the effectiveness of combining the actions of Coca-Cola and cellulase with endoscopic methods to treat large bezoars, providing an alternative to surgical approaches in community healthcare settings.
9.Incidence and risk factors of nonalcoholic fatty liver disease after pancreaticoduodenectomy in Korea: a multicenter retrospective cohort study
Chang-Sup LIM ; Hongbeom KIM ; In Woong HAN ; Won-Gun YUN ; Eunchae GO ; Jaewon LEE ; Kyung Chul YOON ; So Jeong YOON ; Sang Hyun SHIN ; Jin Seok HEO ; Yong Chan SHIN ; Woohyun JUNG
Annals of Clinical Nutrition and Metabolism 2024;16(3):125-133
Purpose:
This study aimed to investigate the incidence, risk factors, and clinical course of nonalcoholic fatty liver disease (NAFLD) following pancreaticoduodenectomy, focusing on the role of adjuvant chemotherapy and other metabolic changes.
Methods:
A retrospective analysis was conducted on 189 patients who underwent pancreaticoduodenectomy between 2013 and 2016. NAFLD was diagnosed using computed tomography (CT) imaging, defined as a liver-tospleen attenuation ratio <0.9. Sarcopenia and sarcopenic obesity were assessed using preoperative CT scans. Logistic regression analysis was performed to identify risk factors for NAFLD development.
Results:
The cumulative incidence of NAFLD increased over time, with rates of 15.9% at one year, 20.4% at three years, and 35.2% at five years post-pancreaticoduodenectomy. Adjuvant chemotherapy was identified as the only significant independent predictor of NAFLD development (odds ratio, 2.74; 95% confidence interval, 1.16-6.70; P=0.023). No significant associations were found between NAFLD and pancreatic enzyme replacement therapy (PERT), sarcopenia, or sarcopenic obesity. Serial analysis of NAFLD status in long-term survivors revealed dynamic changes, with some patients experiencing spontaneous remission or recurrence.
Conclusion
NAFLD is a common, progressive complication following pancreaticoduodenectomy, particularly in patients receiving adjuvant chemotherapy. Although no significant associations with PERT or sarcopenia were observed, these areas warrant further investigation. Long-term monitoring and targeted management strategies are recommended to address NAFLD in this population. Future prospective studies are needed to elucidate the natural history and contributing factors of NAFLD after pancreaticoduodenectomy.
10.Incidence and risk factors of nonalcoholic fatty liver disease after pancreaticoduodenectomy in Korea: a multicenter retrospective cohort study
Chang-Sup LIM ; Hongbeom KIM ; In Woong HAN ; Won-Gun YUN ; Eunchae GO ; Jaewon LEE ; Kyung Chul YOON ; So Jeong YOON ; Sang Hyun SHIN ; Jin Seok HEO ; Yong Chan SHIN ; Woohyun JUNG
Annals of Clinical Nutrition and Metabolism 2024;16(3):125-133
Purpose:
This study aimed to investigate the incidence, risk factors, and clinical course of nonalcoholic fatty liver disease (NAFLD) following pancreaticoduodenectomy, focusing on the role of adjuvant chemotherapy and other metabolic changes.
Methods:
A retrospective analysis was conducted on 189 patients who underwent pancreaticoduodenectomy between 2013 and 2016. NAFLD was diagnosed using computed tomography (CT) imaging, defined as a liver-tospleen attenuation ratio <0.9. Sarcopenia and sarcopenic obesity were assessed using preoperative CT scans. Logistic regression analysis was performed to identify risk factors for NAFLD development.
Results:
The cumulative incidence of NAFLD increased over time, with rates of 15.9% at one year, 20.4% at three years, and 35.2% at five years post-pancreaticoduodenectomy. Adjuvant chemotherapy was identified as the only significant independent predictor of NAFLD development (odds ratio, 2.74; 95% confidence interval, 1.16-6.70; P=0.023). No significant associations were found between NAFLD and pancreatic enzyme replacement therapy (PERT), sarcopenia, or sarcopenic obesity. Serial analysis of NAFLD status in long-term survivors revealed dynamic changes, with some patients experiencing spontaneous remission or recurrence.
Conclusion
NAFLD is a common, progressive complication following pancreaticoduodenectomy, particularly in patients receiving adjuvant chemotherapy. Although no significant associations with PERT or sarcopenia were observed, these areas warrant further investigation. Long-term monitoring and targeted management strategies are recommended to address NAFLD in this population. Future prospective studies are needed to elucidate the natural history and contributing factors of NAFLD after pancreaticoduodenectomy.

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