1.A Case of Becker's Nevus Associated with Smooth Muscle Hamartoma.
Hong Seong JEONG ; Chul Ho YOO ; Dae Gyoo BYUN ; Joon Mo YANG ; Yu Sin LEE
Korean Journal of Dermatology 1987;25(6):832-836
We report a case of Becker's nevus associated with smooth muscle hamartoma, in a 21-year-old male patient, which shows clinically match-head sized, flat topped, round to oval, grouped papules with hairs on the outer surface of the right arm, and microscopically reveals numerous bundles of smooth muscle fiber in the dermis.
Arm
;
Dermis
;
Hair
;
Hamartoma*
;
Humans
;
Male
;
Muscle, Smooth*
;
Nevus*
;
Young Adult
2.Computed Tomographic Findings of Gastric Smooth Muscle Tumor
Seong Ku WOO ; Soo Jhi SUH ; Ho Joon KIM ; Byun Hee CHUN
Journal of the Korean Radiological Society 1985;21(1):125-131
Although the ultrasonography & CT have been regarded as a primary procedure in the differential diagnosis of upper abdominal mass, the CT was more superior in the diagnosis, its extent and relationship to the bowel in the cases of the leiomyosarcoma & leiomyoma of the stomach than those of the ultrasonography. The authors studied CT findings of 9 cases of pathologically proven gastric smooth muscle tumor (leiomyosarcoma 7, leiomyoma 2) during the last two years. The results were as follows: 1. CT findings of gastric leiomyosarcoma were often quite large mass, average 15 cm in diameter; extensive central necrotic or cystic changes were fou nd in all 7 cases, seen more clearly on postcontract scan; calcification and peripheral rim enhancement of the tumor were seen in one case each other. 2. Metastasis to the liver and the spleen was seen only in one case, which revealed centrally necrotic and ascites was found in one case. 3. Two cases of gastric leiomyoma were smaller in size, average 6.3 cm in diameter than those of leiomyosarcomaj central necrotic or cystic changes were less common and less extensive. 4. If there were no evidence of central necrotic or cystic changes in large peri-or juxtagastric tumor, ohe should consider other diagnostic possibilities such as left lobe hepatoma, exophytic stomach cancer, Iymphoma or other mesenchymal tumors than leiomyosarcoma.
Ascites
;
Carcinoma, Hepatocellular
;
Diagnosis
;
Diagnosis, Differential
;
Leiomyoma
;
Leiomyosarcoma
;
Liver
;
Muscle, Smooth
;
Neoplasm Metastasis
;
Smooth Muscle Tumor
;
Spleen
;
Stomach
;
Stomach Neoplasms
;
Ultrasonography
3.High Tibial Osteotomy
Dong Chul LEE ; Seong Joon BYUN
The Journal of Korean Knee Society 2012;24(2):61-69
High tibial osteotomy (HTO) is a widely performed procedure to treat medial knee arthrosis. In general, published studies on HTO report good long-term results with a correct patient selection and a precise surgical technique. The ideal candidate for an HTO is a middle aged patient (60 to 65 years of age), with isolated medial osteoarthritis, with good range of motion and without ligamentous instability. Some issues that need resolution remain; these include the choice between opening and closing wedge tibial osteotomy, the graft selection in opening wedge osteotomies, the type of fixation, the comparison with unicompartmental knee arthroplasty and whether HTO significantly affects a subsequent total joint replacement. Precise indication, preoperative planning, and operative technique selection are essential to achieve good results.
Arthroplasty
;
Humans
;
Joints
;
Knee
;
Ligaments
;
Middle Aged
;
Osteoarthritis
;
Osteotomy
;
Patient Selection
;
Range of Motion, Articular
;
Transplants
4.A Comparative Study of Trochanteric Fractures Treated with the Intertrochanteric/subtrochanteric Fixation or the Proximal Femoral Nail.
Oog Jin SOHN ; Sae Dong KIM ; In Whan KIM ; Seong Joon BYUN
Journal of the Korean Fracture Society 2006;19(3):303-308
PURPOSE: To evaluate the radiographic, clinical results and the complications between who had intertrochanteric fracture, treated with the ITST or the PFN. MATERIALS AND METHODS: We selected each 30 patients of intertrochanteric fracture which were treated with ITST or PFN from July 2002 to November 2005. We evaluated the radiographic results by follow-up radiography and the clinical results with the mobility score of Parker and Palmer, Salvati and Wilson hip function scoring system and Jensen index. RESULTS: The mean distance of lag screw sliding was 4.1 mm at the ITST group and 6.6 mm at the PFN group. Decrease of mobility score of Parker and Palmer, Salvati and Wilson hip function score were similar. Patients complaint pain over lateral thigh area in 5 cases (ITST group) and 8 cases (PFN group). CONCLUSION: The ITST nail and PFN were seen good results in treatment of stable and unstable intertrochanteric fracture.
Femur*
;
Follow-Up Studies
;
Hip
;
Hip Fractures*
;
Humans
;
Radiography
;
Thigh
5.Validity assessment of self-reported smoking status in firefighters using the urine cotinine test
Han Cheol HEO ; Young Seok BYUN ; Soo Ho SOHN ; Seong Min JO ; Sung Kyu PARK ; Joon SAKONG
Annals of Occupational and Environmental Medicine 2020;32(1):e2-
BACKGROUND:
In firefighters, smoking management is important because they are exposed to various harmful substances in their occupational environment. Accurate surveys of smoking status are essential to control tobacco use. The main disadvantage of self-report questionnaires, which are commonly used for investigating smoking status, is the possibility that the subjects' response are invalid. If the validity of firefighters' answers on smoking questionnaires is not adequate, different methods will be needed for investigating smoking status in firefighters.
METHODS:
This study was conducted on 445 male firefighters from 9 fire stations in Daegu (the city in South Korea) who visited a medical institution for medical checkup in 2016. The urine cotinine test strip (DCT-102; CLIAwaived Inc., cut-off value = 200 ng/mL) was used to classify the actual smoking status and to assess the validity of self-reported smoking status on questionnaires. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the smoking questionnaires were analyzed. Subjects testing positive in the urine cotinine test (assumed the actual current smokers) were selected. The frequency at which actual current smokers were misclassified as current non-smokers by the questionnaire was calculated. Subjects' characteristics were analyzed for possible association with any discrepancy between self-reported smoking status and urine cotinine test results.
RESULTS:
The smoking rates among firefighters surveyed using the smoking questionnaire and the urine cotinine test were 22.47% and 51.24%, respectively. Of the all subjects, 29.66% (n = 132) were misclassified. The sensitivity of the smoking questionnaire was 42.98%, the specificity was 99.08%, the PPV was 98.00%, and the NPV was 62.32%. In the 228 subjects classified as current actual smokers by the urine cotinine test, 57.02% (n = 130) were misclassified on the questionnaire. The misclassification rate increased with age. The degree of misclassification also increased when subjects had a history of disease.
CONCLUSIONS
In present study, the validity of the smoking questionnaire for firefighters was not suitable for investigating smoking status due to low sensitivity. To increase the validity of smoking status monitoring in firefighters, consideration of the various factors like survey environment, subjects' characteristics, and occupational factors is needed.
6.Validity assessment of self-reported smoking status in firefighters using the urine cotinine test
Han Cheol HEO ; Young Seok BYUN ; Soo Ho SOHN ; Seong Min JO ; Sung Kyu PARK ; Joon SAKONG
Annals of Occupational and Environmental Medicine 2020;32(1):e2-
BACKGROUND:
In firefighters, smoking management is important because they are exposed to various harmful substances in their occupational environment. Accurate surveys of smoking status are essential to control tobacco use. The main disadvantage of self-report questionnaires, which are commonly used for investigating smoking status, is the possibility that the subjects' response are invalid. If the validity of firefighters' answers on smoking questionnaires is not adequate, different methods will be needed for investigating smoking status in firefighters.
METHODS:
This study was conducted on 445 male firefighters from 9 fire stations in Daegu (the city in South Korea) who visited a medical institution for medical checkup in 2016. The urine cotinine test strip (DCT-102; CLIAwaived Inc., cut-off value = 200 ng/mL) was used to classify the actual smoking status and to assess the validity of self-reported smoking status on questionnaires. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the smoking questionnaires were analyzed. Subjects testing positive in the urine cotinine test (assumed the actual current smokers) were selected. The frequency at which actual current smokers were misclassified as current non-smokers by the questionnaire was calculated. Subjects' characteristics were analyzed for possible association with any discrepancy between self-reported smoking status and urine cotinine test results.
RESULTS:
The smoking rates among firefighters surveyed using the smoking questionnaire and the urine cotinine test were 22.47% and 51.24%, respectively. Of the all subjects, 29.66% (n = 132) were misclassified. The sensitivity of the smoking questionnaire was 42.98%, the specificity was 99.08%, the PPV was 98.00%, and the NPV was 62.32%. In the 228 subjects classified as current actual smokers by the urine cotinine test, 57.02% (n = 130) were misclassified on the questionnaire. The misclassification rate increased with age. The degree of misclassification also increased when subjects had a history of disease.
CONCLUSIONS
In present study, the validity of the smoking questionnaire for firefighters was not suitable for investigating smoking status due to low sensitivity. To increase the validity of smoking status monitoring in firefighters, consideration of the various factors like survey environment, subjects' characteristics, and occupational factors is needed.
7.Validity assessment of self-reported smoking status in firefighters using the urine cotinine test
Han Cheol HEO ; Young Seok BYUN ; Soo Ho SOHN ; Seong Min JO ; Sung Kyu PARK ; Joon SAKONG
Annals of Occupational and Environmental Medicine 2020;32(1):2-
Cotinine
;
Daegu
;
Firefighters
;
Fires
;
Humans
;
Male
;
Sensitivity and Specificity
;
Smoke
;
Smoking
;
Tobacco Use
8.Rupture of the rectosigmoid colon with evisceration of the small bowel through the anus.
Joon JEONG ; Joon Seong PARK ; Chang Gyoo BYUN ; Dong Sup YOON ; Seung Kook SOHN ; Yoon Ho LEE ; Hoon Sang CHI
Yonsei Medical Journal 2000;41(2):289-292
Spontaneous rupture of the rectosigmoid colon and herniation of the small intestine through the rupture site and eventual evisceration through the anus is a very rare event. In the literature, only 42 cases have been reported. The majority of them occurred in patients with rectal prolapse and one case was reported in association with a third-degree uterine prolapse. We experienced an 81-year-old female patient with rectal prolapse and second-degree uterine prolapse complicated by spontaneous perforation of the rectosigmoid colon and anal evisceration of the small intestine. Segmental resection of the nonviable small intestine, primary repair of the ruptured rectosigmoid colon, and sigmoid loop colostomy were performed, and the patient recovered well. In our patient, both rectal and uterine prolapses cooperatively damaged the anterior wall of the rectosigmoid colon and resulted in perforation. So, rectal and uterine prolapses should be treated before the complication develops. In this patient, uterine prolapse should be treated because of the recurrence of this rare episode.
Aged
;
Aged, 80 and over
;
Case Report
;
Colonic Diseases/etiology*
;
Female
;
Human
;
Rectal Prolapse/complications*
;
Rupture, Spontaneous
;
Uterine Prolapse/complications*
9.A Combined Therapy for Hyperphosphatemia in the Tumor Lysis Syndrome: Hemodialysis and Continuo Arteriovenous Hemofiltration.
Yoon Sook CHO ; Jeong Sik BYUN ; Ho Joon CHIN ; Woo Seong HUH ; Yeon Soo KIM ; Dae Seog HEO ; Cu Rie AHN ; Jin Suk HAN ; Suhng Gwon KIM ; Jung Sang LEE
Korean Journal of Nephrology 1997;16(1):167-172
The acute tumor lysis syndrome is an acute illness caused by massive cell lysis after chemotherapies. This syndrome is characterized by hyperuricemia, hyperphosphatemia with hypocalcemia and hyperkalemia. Among these electrolyte abnormalities, the most serious complication is the severe hyperphosphatemia (greater than 14mg/dL) that could result in sudden cardiac arrest or respiratory failure. In order to correct the severe hyperphosphatemia, hemodialysis has been used commonly as the renal replacement therapy . However the hemodialysis can make posthemodialysis serum phosphate rebounded unless the patient take this treatment for more than 6 hours. Therefore it is not sufficient to use hemodialysis treatment alone. To solve this problem, hemodialysis has been used with or replaced by the uninterrupted dialysis technique such as CRRT (continuous renal replacement therapy). We report a 33-year-old man with Burkitt lymphoma who showed severe hyperphosphatemia (peak phosphate value was 18.6mg/dL) during the course of chemotherapy. used with 5 day CAVH (continuous arteriovenous hemofiltration) his phosphate level could be maintained without any rebound. Therefore we concluded that CAVH in conjunction with hemodialysis would be a successful way to control severe hyperphosphatemia associated with tumor lysis syndrome.
Adult
;
Burkitt Lymphoma
;
Death, Sudden, Cardiac
;
Dialysis
;
Drug Therapy
;
Hemofiltration*
;
Humans
;
Hyperkalemia
;
Hyperphosphatemia*
;
Hyperuricemia
;
Hypocalcemia
;
Renal Dialysis*
;
Renal Replacement Therapy
;
Respiratory Insufficiency
;
Tumor Lysis Syndrome*
10.Symptomatic Improvement of Diffuse Esophageal Spasm after Botulinum Toxin Injection.
Jae Pil HAN ; Su Jin HONG ; Hoon Il KIM ; Jin Myung BYUN ; Hwa Jong KIM ; Bong Min KO ; Joon Seong LEE ; Moon Sung LEE
The Korean Journal of Gastroenterology 2012;60(2):109-112
Diffuse esophageal spasm, an uncommon esophageal motility disorder, has recently been defined using high-resolution manometry. Patients with distal esophageal spasm usually complain of chest pain or dysphagia. The etiology and pathophysiology of this disorder are poorly known, and treatment options are limited. However, some options to improve symptoms are available, including endoscopic injection of botulinum toxin. Nevertheless, few reports have described the effects of endoscopic injection of botulinum toxin in patients with symptomatic diffuse esophageal spasm with clear endoscopic and high-resolution manometry images. Here, we report a case of diffuse esophageal spasm diagnosed with high-resolution manometry and treated by endoscopic injection of botulinum toxin with good results at the 7-month follow-up.
Aged
;
Anti-Dyskinesia Agents/*therapeutic use
;
Botulinum Toxins/*therapeutic use
;
Endoscopy, Digestive System
;
Esophageal Spasm, Diffuse/radiography/*therapy
;
Female
;
Humans
;
Manometry
;
Tomography, X-Ray Computed