1.Implementation of Novel Fetal Intervention for Fetal Lower Urinary Tract Obstruction and the Importance of Candidate Selection:A Case Report
Won Shik CHOI ; So Yun AHN ; Na Mi LEE ; Na Li YU ; Sooji HAM ; Gwang Jun KIM
Perinatology 2024;35(4):140-145
Fetal lower urinary tract obstruction (LUTO) is a congenital condition in which the bladder fails to excrete urine through the urethra. The primary goal of prenatal treatment for LUTO is the prevention of renal impairment and pulmonary hypoplasia. Vesico-amniotic shunt (VAS) has been the fetal intervention of choice; however, VAS has some limitations, including excretion of urine through an unphysiologic bypass and the need for postnatal corrective reoperation. In this study, we present a novel fetal intervention, a “retro-cystoscopic urethral approach,” performed on a male fetus at 20 weeks gestation diagnosed with enlarged bladder and bilateral hydronephrosis. This approach aims to dilate the narrowed urethra by inserting a urinary catheter using guidewire through a fetal cysto scope. The whole procedure was monitored under real-time ultrasonographic guidance. Despite prenatal intervention, the fetus required multiple cystocenteses, and the bladder dilation persisted.Postnatally, he was diagnosed with megacystis microcolon intestinal hypoperistalsis syndrome, a non-obstructive condition which is relatively rare in male infants. Our case emphasizes the compl exity of diagnosing LUTO during the prenatal period. Further studies exploring novel prenatal interven tions should pay more attention to candidate selection. Additionally, a thorough evaluation of organ systems beyond the urinary tract is necessary.
2.Implementation of Novel Fetal Intervention for Fetal Lower Urinary Tract Obstruction and the Importance of Candidate Selection:A Case Report
Won Shik CHOI ; So Yun AHN ; Na Mi LEE ; Na Li YU ; Sooji HAM ; Gwang Jun KIM
Perinatology 2024;35(4):140-145
Fetal lower urinary tract obstruction (LUTO) is a congenital condition in which the bladder fails to excrete urine through the urethra. The primary goal of prenatal treatment for LUTO is the prevention of renal impairment and pulmonary hypoplasia. Vesico-amniotic shunt (VAS) has been the fetal intervention of choice; however, VAS has some limitations, including excretion of urine through an unphysiologic bypass and the need for postnatal corrective reoperation. In this study, we present a novel fetal intervention, a “retro-cystoscopic urethral approach,” performed on a male fetus at 20 weeks gestation diagnosed with enlarged bladder and bilateral hydronephrosis. This approach aims to dilate the narrowed urethra by inserting a urinary catheter using guidewire through a fetal cysto scope. The whole procedure was monitored under real-time ultrasonographic guidance. Despite prenatal intervention, the fetus required multiple cystocenteses, and the bladder dilation persisted.Postnatally, he was diagnosed with megacystis microcolon intestinal hypoperistalsis syndrome, a non-obstructive condition which is relatively rare in male infants. Our case emphasizes the compl exity of diagnosing LUTO during the prenatal period. Further studies exploring novel prenatal interven tions should pay more attention to candidate selection. Additionally, a thorough evaluation of organ systems beyond the urinary tract is necessary.
3.A Modified eCura System to Stratify the Risk of Lymph Node Metastasis in Undifferentiated-Type Early Gastric Cancer After Endoscopic Resection
Hyo-Joon YANG ; Hyuk LEE ; Tae Jun KIM ; Da Hyun JUNG ; Kee Don CHOI ; Ji Yong AHN ; Wan Sik LEE ; Seong Woo JEON ; Jie-Hyun KIM ; Gwang Ha KIM ; Jae Myung PARK ; Sang Gyun KIM ; Woon Geon SHIN ; Young-Il KIM ; Il Ju CHOI
Journal of Gastric Cancer 2024;24(2):172-184
Purpose:
The original eCura system was designed to stratify the risk of lymph node metastasis (LNM) after endoscopic resection (ER) in patients with early gastric cancer (EGC).We assessed the effectiveness of a modified eCura system for reflecting the characteristics of undifferentiated-type (UD)-EGC.
Materials and Methods:
Six hundred thirty-four patients who underwent non-curative ER for UD-EGC and received either additional surgery (radical surgery group; n=270) or no further treatment (no additional treatment group; n=364) from 18 institutions between 2005 and 2015 were retrospectively included in this study. The eCuraU system assigned 1 point each for tumors >20 mm in size, ulceration, positive vertical margin, and submucosal invasion <500 µm; 2 points for submucosal invasion ≥500 µm; and 3 points for lymphovascular invasion.
Results:
LNM rates in the radical surgery group were 1.1%, 5.4%, and 13.3% for the low-(0–1 point), intermediate- (2–3 points), and high-risk (4–8 points), respectively (P-fortrend<0.001). The eCuraU system showed a significantly higher probability of identifying patients with LNM as high-risk than the eCura system (66.7% vs. 22.2%; McNemar P<0.001).In the no additional treatment group, overall survival (93.4%, 87.2%, and 67.6% at 5 years) and cancer-specific survival (99.6%, 98.9%, and 92.9% at 5 years) differed significantly among the low-, intermediate-, and high-risk categories, respectively (both P<0.001). In the high-risk category, surgery outperformed no treatment in terms of overall mortality (hazard ratio, 3.26; P=0.015).
Conclusions
The eCuraU system stratified the risk of LNM in patients with UD-EGC after ER. It is strongly recommended that high-risk patients undergo additional surgery.
4.Association of Body Composition Changes with the Development of Diabetes Mellitus: A Nation-Wide Population Study
Hyung Jun KIM ; Hyung-Woo LEE ; Min-Kyoung KANG ; Gwang Hyun LEEM ; Min-Ho KIM ; Tae-Jin SONG
Diabetes & Metabolism Journal 2024;48(6):1093-1104
Background:
We investigated the association between body composition changes and new-onset diabetes mellitus (DM) development according to the body mass index (BMI) in a longitudinal setting in the general Korean population.
Methods:
From 2010 to 2011 (1st) and 2012 to 2013 (2nd), we included 1,607,508 stratified random sample participants without DM from the National Health Insurance Service-Health Screening dataset of Korean. The predicted appendicular skeletal muscle mass index (pASMMI), body fat mass index (pBFMI), and lean body mass index (pLBMI) were calculated using pre-validated anthropometric prediction equations. A prediction equation was constructed by combining age, weight, height, waist circumference, serum creatinine levels, alcohol consumption status, physical activity, and smoking history as variables affecting body composition.
Results:
Decreased pASMMI (men: hazard ratio [HR], 0.866; 95% confidence interval [CI], 0.830 to 0.903; P<0.001; women: HR, 0.748; 95% CI, 0.635 to 0.881; P<0.001), decreased pLBMI (men: HR, 0.931; 95% CI, 0.912 to 0.952; P<0.001; women: HR, 0.906; 95% CI, 0.856 to 0.959; P=0.007), and increased pBFMI (men: HR, 1.073; 95% CI, 1.050 to 1.096; P<0.001; women: HR, 1.114; 95% CI, 1.047 to 1.186; P=0.007) correlated with the development of new-onset DM. Notably, only in the overweight and obese BMI categories, decreases in pASMMI and pLBMI and increases in pBFMI associated with new-onset DM, regardless of gender.
Conclusion
Decreased pASMMI and pLBMI, and increased pBFMI with excess fat accumulation may enhance the risk of newonset DM. Therefore, appropriate changes in body composition can help prevent new-onset DM.
5.Association of Body Composition Changes with the Development of Diabetes Mellitus: A Nation-Wide Population Study
Hyung Jun KIM ; Hyung-Woo LEE ; Min-Kyoung KANG ; Gwang Hyun LEEM ; Min-Ho KIM ; Tae-Jin SONG
Diabetes & Metabolism Journal 2024;48(6):1093-1104
Background:
We investigated the association between body composition changes and new-onset diabetes mellitus (DM) development according to the body mass index (BMI) in a longitudinal setting in the general Korean population.
Methods:
From 2010 to 2011 (1st) and 2012 to 2013 (2nd), we included 1,607,508 stratified random sample participants without DM from the National Health Insurance Service-Health Screening dataset of Korean. The predicted appendicular skeletal muscle mass index (pASMMI), body fat mass index (pBFMI), and lean body mass index (pLBMI) were calculated using pre-validated anthropometric prediction equations. A prediction equation was constructed by combining age, weight, height, waist circumference, serum creatinine levels, alcohol consumption status, physical activity, and smoking history as variables affecting body composition.
Results:
Decreased pASMMI (men: hazard ratio [HR], 0.866; 95% confidence interval [CI], 0.830 to 0.903; P<0.001; women: HR, 0.748; 95% CI, 0.635 to 0.881; P<0.001), decreased pLBMI (men: HR, 0.931; 95% CI, 0.912 to 0.952; P<0.001; women: HR, 0.906; 95% CI, 0.856 to 0.959; P=0.007), and increased pBFMI (men: HR, 1.073; 95% CI, 1.050 to 1.096; P<0.001; women: HR, 1.114; 95% CI, 1.047 to 1.186; P=0.007) correlated with the development of new-onset DM. Notably, only in the overweight and obese BMI categories, decreases in pASMMI and pLBMI and increases in pBFMI associated with new-onset DM, regardless of gender.
Conclusion
Decreased pASMMI and pLBMI, and increased pBFMI with excess fat accumulation may enhance the risk of newonset DM. Therefore, appropriate changes in body composition can help prevent new-onset DM.
6.Exploring a Case of Potential Facial Lichen Planopilaris or Follicular Variant of Lichen Planus Pigmentosus
Kyung-Ju LEE ; Jun Hyeong JEONG ; Jae Won LEE ; Hyun-Tae SHIN ; Ji Won BYUN ; Gwang Seong CHOI ; Jeonghyun SHIN
Korean Journal of Dermatology 2024;62(10):560-564
Lichen planopilaris (LPP) is a follicular variant of lichen planus, typically occurring on the scalp. A 61-year-old man presented with asymptomatic pigmented atrophic patches on his chin. Dermoscopy showed reticular hyperpigmentation and perifollicular hyperkeratosis. A punch biopsy revealed follicular plugging, perifollicular lymphocytic infiltration, vacuolar degeneration of the follicular basal cell layer, mild interface dermatitis, and melanophages. Direct immunofluorescence testing was negative, leading to a diagnosis of facial LPP. Some have classified similar cases as facial LPP, while others have reported them as a follicular variant of lichen planus pigmentosus. This report explores the question of whether these cases should be classified as facial LPP, or as a follicular variant of lichen planus pigmentosus, or as conditions encompassed within the spectrum of these two disorders, with a comprehensive literature review.
7.Implementation of Novel Fetal Intervention for Fetal Lower Urinary Tract Obstruction and the Importance of Candidate Selection:A Case Report
Won Shik CHOI ; So Yun AHN ; Na Mi LEE ; Na Li YU ; Sooji HAM ; Gwang Jun KIM
Perinatology 2024;35(4):140-145
Fetal lower urinary tract obstruction (LUTO) is a congenital condition in which the bladder fails to excrete urine through the urethra. The primary goal of prenatal treatment for LUTO is the prevention of renal impairment and pulmonary hypoplasia. Vesico-amniotic shunt (VAS) has been the fetal intervention of choice; however, VAS has some limitations, including excretion of urine through an unphysiologic bypass and the need for postnatal corrective reoperation. In this study, we present a novel fetal intervention, a “retro-cystoscopic urethral approach,” performed on a male fetus at 20 weeks gestation diagnosed with enlarged bladder and bilateral hydronephrosis. This approach aims to dilate the narrowed urethra by inserting a urinary catheter using guidewire through a fetal cysto scope. The whole procedure was monitored under real-time ultrasonographic guidance. Despite prenatal intervention, the fetus required multiple cystocenteses, and the bladder dilation persisted.Postnatally, he was diagnosed with megacystis microcolon intestinal hypoperistalsis syndrome, a non-obstructive condition which is relatively rare in male infants. Our case emphasizes the compl exity of diagnosing LUTO during the prenatal period. Further studies exploring novel prenatal interven tions should pay more attention to candidate selection. Additionally, a thorough evaluation of organ systems beyond the urinary tract is necessary.
8.Implementation of Novel Fetal Intervention for Fetal Lower Urinary Tract Obstruction and the Importance of Candidate Selection:A Case Report
Won Shik CHOI ; So Yun AHN ; Na Mi LEE ; Na Li YU ; Sooji HAM ; Gwang Jun KIM
Perinatology 2024;35(4):140-145
Fetal lower urinary tract obstruction (LUTO) is a congenital condition in which the bladder fails to excrete urine through the urethra. The primary goal of prenatal treatment for LUTO is the prevention of renal impairment and pulmonary hypoplasia. Vesico-amniotic shunt (VAS) has been the fetal intervention of choice; however, VAS has some limitations, including excretion of urine through an unphysiologic bypass and the need for postnatal corrective reoperation. In this study, we present a novel fetal intervention, a “retro-cystoscopic urethral approach,” performed on a male fetus at 20 weeks gestation diagnosed with enlarged bladder and bilateral hydronephrosis. This approach aims to dilate the narrowed urethra by inserting a urinary catheter using guidewire through a fetal cysto scope. The whole procedure was monitored under real-time ultrasonographic guidance. Despite prenatal intervention, the fetus required multiple cystocenteses, and the bladder dilation persisted.Postnatally, he was diagnosed with megacystis microcolon intestinal hypoperistalsis syndrome, a non-obstructive condition which is relatively rare in male infants. Our case emphasizes the compl exity of diagnosing LUTO during the prenatal period. Further studies exploring novel prenatal interven tions should pay more attention to candidate selection. Additionally, a thorough evaluation of organ systems beyond the urinary tract is necessary.
9.Exploring a Case of Potential Facial Lichen Planopilaris or Follicular Variant of Lichen Planus Pigmentosus
Kyung-Ju LEE ; Jun Hyeong JEONG ; Jae Won LEE ; Hyun-Tae SHIN ; Ji Won BYUN ; Gwang Seong CHOI ; Jeonghyun SHIN
Korean Journal of Dermatology 2024;62(10):560-564
Lichen planopilaris (LPP) is a follicular variant of lichen planus, typically occurring on the scalp. A 61-year-old man presented with asymptomatic pigmented atrophic patches on his chin. Dermoscopy showed reticular hyperpigmentation and perifollicular hyperkeratosis. A punch biopsy revealed follicular plugging, perifollicular lymphocytic infiltration, vacuolar degeneration of the follicular basal cell layer, mild interface dermatitis, and melanophages. Direct immunofluorescence testing was negative, leading to a diagnosis of facial LPP. Some have classified similar cases as facial LPP, while others have reported them as a follicular variant of lichen planus pigmentosus. This report explores the question of whether these cases should be classified as facial LPP, or as a follicular variant of lichen planus pigmentosus, or as conditions encompassed within the spectrum of these two disorders, with a comprehensive literature review.
10.Implementation of Novel Fetal Intervention for Fetal Lower Urinary Tract Obstruction and the Importance of Candidate Selection:A Case Report
Won Shik CHOI ; So Yun AHN ; Na Mi LEE ; Na Li YU ; Sooji HAM ; Gwang Jun KIM
Perinatology 2024;35(4):140-145
Fetal lower urinary tract obstruction (LUTO) is a congenital condition in which the bladder fails to excrete urine through the urethra. The primary goal of prenatal treatment for LUTO is the prevention of renal impairment and pulmonary hypoplasia. Vesico-amniotic shunt (VAS) has been the fetal intervention of choice; however, VAS has some limitations, including excretion of urine through an unphysiologic bypass and the need for postnatal corrective reoperation. In this study, we present a novel fetal intervention, a “retro-cystoscopic urethral approach,” performed on a male fetus at 20 weeks gestation diagnosed with enlarged bladder and bilateral hydronephrosis. This approach aims to dilate the narrowed urethra by inserting a urinary catheter using guidewire through a fetal cysto scope. The whole procedure was monitored under real-time ultrasonographic guidance. Despite prenatal intervention, the fetus required multiple cystocenteses, and the bladder dilation persisted.Postnatally, he was diagnosed with megacystis microcolon intestinal hypoperistalsis syndrome, a non-obstructive condition which is relatively rare in male infants. Our case emphasizes the compl exity of diagnosing LUTO during the prenatal period. Further studies exploring novel prenatal interven tions should pay more attention to candidate selection. Additionally, a thorough evaluation of organ systems beyond the urinary tract is necessary.

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