No abstract available.
Humans ; Pepsinogen A*

PURPOSE: Recently, a percutaneous aspiration with sclerotherapy has become the treatment of choice for the symptomatic, large, and simple renal cyst because of its minimal invasiveness and high effectiveness. The recurrence rate of a percutaneous aspiration only, was reported to range from 30 to 70%. This study was performed to evaluate the effects of percutaneous aspiration with sclerotherapy. MATERIALS AND METHODS: The results of the treatment in 36 cases of simple renal cysts from October 1993 to December 1999 were evaluated. The symptoms associated with simple renal cysts were: flank pain or discomfort (50%), none (47.2%) and a palpable mass (2.8%). The simple renal cysts were treated with a percutaneous aspiration only in 6 cases, a percutaneous aspiration with sclerotherapy using 99% ethanol in 21 cases or a 10% minocycline solution in 9 cases. All patients were followed up by ultrasound for 6 to 56 months (mean 18 months). RESULTS: Complete collapse, and partial collapse rate of the renal cysts were 1/6 (16.7%), 2/6 (33.3%) in the aspiration only group, 6/21 (28.6%), 14/21 (66.7%) in the 99% ethanol group and 3/9 (33.3%), 4/9 (44.4%) in the 10% minocycline solution group, respectively. CONCLUSIONS: Therefore, a percutaneous aspiration with sclerotherapy using either 99% ethanol or 10% minocycline solution appears to be an effective way to the prevent re-accumulation of cystic fluid. However, the success rates in the percutaneous aspiration with sclerotherapy using 99% ethanol and 10% minocycline solution were not significantly different.
Ethanol ; Flank Pain ; Humans ; Minocycline ; Recurrence ; Sclerotherapy* ; Ultrasonography

PURPOSE: To implant tissue chips in New Zealand rabbits, and thus redurce the frequency with which scattered VX2 carcinoma nodules and early metastasis develop in these animals. MATERIALS AND METHODS: VX2-carcinoma tissue chips of two different sizes were implanted under ultrasonographic guidance. In each of 12 New Zealand rabbits (group 1), there 1-mm tissue chips were implanted in the liver using an 18-gauge needle, and in the same way, one 3-mm chip with an added gelfoam pellet was implanted in the proximal lumen of the liver of each of ten other New Zealand rabbits (group 2). Three weeks after implantation, the animals underwent dvalphase CT scanning and were sacrificed, and the Number and size of tumor nodules, and metastasis were evaluated either macro-or microscopically. RESULTS: In ten rabbits in group I, a total of 21 nodules (16 in the liver, 5 in the peritoneal wall) were observed, which in nine rabbits in group 2, a total of ten nodules-all in the liver-were present. CT scans depicted tumor nodules in 50% of group-I rabbits, and in 29% those in group 2. Mean tumor diameter was 12 +/-9 mm in group 1 and 6.4 +/-3 mm in group 2. Histologic examination indicated the presence of nodular VX2 carcinoma, with varying degrees of central necrosis, a feature more prominent in group 2. CONCLUSION: To provide a well-localized tumor nodule in rabbit liver, tissue chip implantation of VX2 carcinoma, especially with added gelfoam, is a good alternative to intraparenchymal injection of tumor suspension.
Animals ; Gelatin Sponge, Absorbable ; Liver* ; Necrosis ; Needles ; Neoplasm Metastasis ; Rabbits ; Tomography, X-Ray Computed

Angiodysplasia of the small bowel is an uncommon disorder in Korea, and is often found to be the cause of unexplained gastrointestinal bleeding. A 53-year-old male patient visited an emergeney room because of repeated melena and dizziness, He underwent selective superior mesenteric arterial angiography which revealed abnormal clusters of small arteries and early opacification of veins draining a segment of lower jejunum. An exploratory laparotomy was performed under the impression of angiodysplasia. An ulceration on the lower jejunum was found, and was resected. Subsequent jejunojejunostomy was performed. Histology of the resected specimen showed an irregularly dilated vessels in mucosa and submucosa.
Angiodysplasia* ; Angiography ; Arteries ; Dizziness ; Hemorrhage ; Humans ; Jejunum* ; Korea ; Laparotomy ; Male ; Melena ; Middle Aged ; Mucous Membrane ; Ulcer ; Veins

Angiodysplasia of the small bowel is an uncommon disorder in Korea, and is often found to be the cause of unexplained gastrointestinal bleeding. A 53-year-old male patient visited an emergeney room because of repeated melena and dizziness, He underwent selective superior mesenteric arterial angiography which revealed abnormal clusters of small arteries and early opacification of veins draining a segment of lower jejunum. An exploratory laparotomy was performed under the impression of angiodysplasia. An ulceration on the lower jejunum was found, and was resected. Subsequent jejunojejunostomy was performed. Histology of the resected specimen showed an irregularly dilated vessels in mucosa and submucosa.
Angiodysplasia* ; Angiography ; Arteries ; Dizziness ; Hemorrhage ; Humans ; Jejunum* ; Korea ; Laparotomy ; Male ; Melena ; Middle Aged ; Mucous Membrane ; Ulcer ; Veins

An epidemiological study was performed to know the recent infection status of Paragonimus westermani metacercariae (PwMc) in freshwater crayfish, Cambaroides similis, from 2 streams in Jeollanam-do, Republic of Korea. Crayfish were collected from creeks in Bogil-do (Island), Wando-gun, and in a creek near Daeheung Temple in Haenam-gun. The infection rate of crayfish with PwMc in Bogil-do was 89.8%, and the metacercarial burden was 37 PwMc per the infected crayfish. Crayfish in a creek near Daeheung Temple were larger and twice heavier than those in Bogil-do. Of them, 96.5% were infected with PwMc. An average of 140 metacercariae was found in the infected crayfish, almost quadruple to those of Bogil-do. There was a strong correlation between the number of PwMc and body weight of the crayfish. These results suggest that P. westermani metacercariae are still prevalent in crayfish of the 2 regions in Jeollanam-do, Korea.
Astacoidea* ; Body Weight ; Epidemiologic Studies ; Fresh Water* ; Incidence* ; Jeollanam-do* ; Korea* ; Metacercariae* ; Paragonimus westermani* ; Paragonimus* ; Republic of Korea ; Rivers

Background: s/Aims: Artificial intelligence (AI) technology has been used to assess surgery quality, educate, and evaluate surgical performance using video recordings in the minimally invasive surgery era. Much attention has been paid to automating surgical workflow analysis from surgical videos for an effective evaluation to achieve the assessment and evaluation. This study aimed to design a deep learning model to automatically identify surgical phases using laparoscopic cholecystectomy videos and automatically assess the accuracy of recognizing surgical phases. Methods: One hundred and twenty cholecystectomy videos from a public dataset (Cholec80) and 40 laparoscopic cholecystectomy videos recorded between July 2022 and December 2022 at a single institution were collected. These datasets were split into training and testing datasets for the AI model at a 2:1 ratio. Test scenarios were constructed according to structural characteristics of the trained model. No pre- or post-processing of input data or inference output was performed to accurately analyze the effect of the label on model training. Results: A total of 98,234 frames were extracted from 40 cases as test data. The overall accuracy of the model was 91.2%. The most accurate phase was Calot’s triangle dissection (F1 score: 0.9421), whereas the least accurate phase was clipping and cutting (F1 score:0.7761). Conclusions Our AI model identified phases of laparoscopic cholecystectomy with a high accuracy.

Background: s/Aims: Artificial intelligence (AI) technology has been used to assess surgery quality, educate, and evaluate surgical performance using video recordings in the minimally invasive surgery era. Much attention has been paid to automating surgical workflow analysis from surgical videos for an effective evaluation to achieve the assessment and evaluation. This study aimed to design a deep learning model to automatically identify surgical phases using laparoscopic cholecystectomy videos and automatically assess the accuracy of recognizing surgical phases. Methods: One hundred and twenty cholecystectomy videos from a public dataset (Cholec80) and 40 laparoscopic cholecystectomy videos recorded between July 2022 and December 2022 at a single institution were collected. These datasets were split into training and testing datasets for the AI model at a 2:1 ratio. Test scenarios were constructed according to structural characteristics of the trained model. No pre- or post-processing of input data or inference output was performed to accurately analyze the effect of the label on model training. Results: A total of 98,234 frames were extracted from 40 cases as test data. The overall accuracy of the model was 91.2%. The most accurate phase was Calot’s triangle dissection (F1 score: 0.9421), whereas the least accurate phase was clipping and cutting (F1 score:0.7761). Conclusions Our AI model identified phases of laparoscopic cholecystectomy with a high accuracy.

Background: s/Aims: Artificial intelligence (AI) technology has been used to assess surgery quality, educate, and evaluate surgical performance using video recordings in the minimally invasive surgery era. Much attention has been paid to automating surgical workflow analysis from surgical videos for an effective evaluation to achieve the assessment and evaluation. This study aimed to design a deep learning model to automatically identify surgical phases using laparoscopic cholecystectomy videos and automatically assess the accuracy of recognizing surgical phases. Methods: One hundred and twenty cholecystectomy videos from a public dataset (Cholec80) and 40 laparoscopic cholecystectomy videos recorded between July 2022 and December 2022 at a single institution were collected. These datasets were split into training and testing datasets for the AI model at a 2:1 ratio. Test scenarios were constructed according to structural characteristics of the trained model. No pre- or post-processing of input data or inference output was performed to accurately analyze the effect of the label on model training. Results: A total of 98,234 frames were extracted from 40 cases as test data. The overall accuracy of the model was 91.2%. The most accurate phase was Calot’s triangle dissection (F1 score: 0.9421), whereas the least accurate phase was clipping and cutting (F1 score:0.7761). Conclusions Our AI model identified phases of laparoscopic cholecystectomy with a high accuracy.

Here, percutaneous spinal cord injury (SCI) methods using a balloon catheter in adult rats are described. A balloon catheter was inserted into the epidural space through the lumbosacral junction and then inflated between T9-T10 for 10min under fluoroscopic guidance. Animals were divided into three groups with respect to inflation volume: 20 microL (n = 18), 50 microL (n = 18) and control (Fogarty catheter inserted but not inflated; n = 10). Neurological assessments were then made based on BBB score, magnetic resonance imaging and histopathology. Both inflation volumes produced complete paralysis. Gradual recovery of motor function occurred when 20 microL was used, but not after 50 microL was applied. In the 50 microL group, all gray and white matter was lost from the center of the lesion. In addition, supramaximal damage was noted, which likely prevented spontaneous recovery. This percutaneous spinal cord compression injury model is simple, rapid with high reproducibility and the potential to serve as a useful tool for investigation of pathophysiology and possible protective treatments of SCI in vivo.
Animals ; Balloon Embolectomy/*methods ; Disease Models, Animal ; Male ; Rats ; Rats, Sprague-Dawley ; Spinal Cord Compression/*therapy