1.CHANGE OF TEMPERATURE OF CANNULA AND ITS INFLUENCE ON MUSCLES, VESSELS, AND NERVES DURING ULTRASONIC LIPOSUCTION.
Dong Hun LEE ; Byung Chae CHO ; Jung Hyung LEE ; Bong Su BAEK
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1997;24(2):264-274
It has been suspected that the cannula of the ultrasonic generator became heated during liposuction, and that the heated cannula might possibly damage the soft tissues such as vessels, nerves and muscles. To confirm these suspicions, the actual temperature of the cannula was measured after being switched on, and the influence of the heated cannula on the soft tissues of 30 rabbits was studied macroscopically and microscopically. When the cooling system of ultrasonic generator was not operated, the temperature of a cannula tip increased to 100degrees C in 10 seconds, and the temperature of a cannula shaft did not increase over 40 degrees C. When the cooling system of the ultrasonic generator was operated, the temperature of the cannula tip increased to 70 degrees C in 20 seconds and to 100 degrees C in 1 minute. The stronger ultrasonic power was, the higher the temperature of the cannula tip was. When the heated cannnula tip touched the muscles, vesseles and nerves directly, the arterial and venous walls were perforated in about 20 seconds and 10 seconds, respectively. Gross changes of the muscles, such as color change and depression of the contacted area, were seen in about 30 seconds, and histological changes occurred in about 3 seconds. When adding the Klein solution, an infiltration solution for increasing the destructive effects of the ultrasound, the onset time of tissue damage was significantly shortened in vessels and nerves, but there was no significant difference in muscles. Although there was no finding of damage by the ultrasonic wave itself on the vessels, nerves, and muscles during ultrasonic liposuction, this study confirmed that the heated cannula could damage vessels, nerves, and muscles. Thus we must try to avoid placing the cannula at certain areas for more than 10 seconds douring the ultrasonic liposuction.
Catheters*
;
Depression
;
Hot Temperature
;
Lipectomy*
;
Muscles*
;
Rabbits
;
Ultrasonics*
;
Ultrasonography
2.Patella Resurfacing Versus Nonresurfacing in Bilateral Total Knee Arthroplasty
Dae Kyung BAE ; Dong Hee LEE ; Chang Hee BAEK ; Jong Hoon CHO
The Journal of the Korean Orthopaedic Association 1995;30(5):1194-1202
Patellofemoral complications are the most frequent problems in total knee arthroplasty. In the literature, the subject of patella resurfacing and nonresurfacing is controversial. Twenty-seven osteoarthritic patients who received bilateral total knee prostheses were studied to evaluate the advantages and disadvantages of patella resurfacing prospectively. Only patients with mild patellofemoral disease were included in the study. The Ortholoc modular implant was used in all cases. Cementless femoral and tibial component were used. But, if we resurfaced the patella, cement was used. In all patients, patella resurfacing had been done in the left knee but not in the right knee. For the clinical analysis, We used Knee Rating Score of the Hospital for Special Surgery(HSS), For the roentgenographic analysis, We used Laurin's lateral patellofemoral angle & Merchant's congruence angle. In the follow up, blind test for patellar pain was performed to compare between right and left knee joint clinically. The average age was 61 years(range 28-72 years) and the average follow up was 21 months(range 12-27 months). Preoperative ROM was 104.4 degrees in right side and 106.7 degrees in left side. Postoperative ROM was 112.7 degrees in right side and 109.6 degrees in left side. Preoperative HSS Knee Rating Score was 53.1 point in right side and 54.8 point in left side. Postoperative HSS Knee Rating Score was 81.5 point in right side and 81.2 point in left side. In the plain knee AP view, preoperative tibiofemoral angle was varus 7.0 degrees in right side and varus 5.6 degrees in left side. Postoperative tibiofemoral angle was valgus 5.1 degrees in right side and valgus 4.9 degrees in left side. Preoperative Merchant's congruence angle was 14.9 degrees in right side and 15.3 degrees in left side. Postoperative Merchant's congruence angle was
Arthroplasty, Replacement, Knee
;
Follow-Up Studies
;
Humans
;
Knee
;
Knee Joint
;
Knee Prosthesis
;
Patella
;
Prospective Studies
;
Range of Motion, Articular
4.Hirsutoid Papillomas of Vulvae.
Hye Nam LEE ; Sook Hee LIM ; Seung Cheol BAEK ; Dong HOUH ; Dae Gyoo BYUN ; Baik Kee CHO
Annals of Dermatology 2000;12(1):38-40
Hirsutoid papillomas of vulvae present as smooth or filiform papules located on the inner surfaces of the labia minora. This disease is usually considered as anatomical variants of the vestibular mucosa. Differentiation from condyloma acuminata is important to avoid unnecessary treatment. Herein we report a case of hirsutoid papillomas of vulvae in a 21-year-old female who complained of pruritic papules on the vulva of one year's duration. Papules were located on the inner surfaces of the left labia minora and vestible of the vulva. Clinically, they were quite similar to condyloma acuminata. Histologically, however, the epithelium was devoid of features of human papillomavirus(HPV) infections such as koilocytosis, double nucleation, and dyskeratosis.
Epithelium
;
Female
;
Humans
;
Mucous Membrane
;
Papilloma*
;
Vulva*
;
Young Adult
5.Edematous and painful external hemorrhoids following intersphincteric resection for low rectal cancer.
Quor Meng LEONG ; Dong Nyoung SON ; Se Jin BAEK ; Jae Sung CHO ; Azali AMAR ; Jung Myun KWAK ; Seon Hahn KIM
Journal of the Korean Surgical Society 2011;81(Suppl 1):S39-S42
Intersphincteric resection (ISR) is the ultimate sphincter saving procedure for low rectal cancer. Hemorrhoids are a common benign condition. We present and discuss a case of ISR which developed painful edematous hemorrhoids after ISR. A 62-year-old female with low rectal cancer received neoadjuvant chemoradiotherapy with successful down staging of tumor before undergoing robot assisted ISR with coloanal hand-sewn anastomosis. She had pre-existing external hemorrhoids which were not excised. She developed painful and edematous external hemorrhoids 4 days after surgery. These were treated conservatively before discharge. Many colorectal surgeons performing ISR have experienced similar situations in their patients, but none have reported on this phenomenon. We discuss the possible factors that may contribute to this situation. A possible solution is prophylactic excision of the hemorrhoids during coloanal anastomosis. Painful hemorrhoids may occur after ISR and if managed conservatively, the outcome is skin tags.
Chemoradiotherapy
;
Female
;
Hemorrhoids
;
Humans
;
Middle Aged
;
Rectal Neoplasms
;
Skin
6.A case of citrobacter freundii osteomyelitis.
Hyung Goo CHO ; Dong Sig KIM ; Hwang Min KIM ; Jae Seung YANG ; Baek Keun LIM ; Jong Soo KIM
Journal of the Korean Pediatric Society 1991;34(3):408-412
No abstract available.
Citrobacter freundii*
;
Citrobacter*
;
Osteomyelitis*
7.A case of citrobacter freundii osteomyelitis.
Hyung Goo CHO ; Dong Sig KIM ; Hwang Min KIM ; Jae Seung YANG ; Baek Keun LIM ; Jong Soo KIM
Journal of the Korean Pediatric Society 1991;34(3):408-412
No abstract available.
Citrobacter freundii*
;
Citrobacter*
;
Osteomyelitis*
8.A Case of Tuberculosis of Thyroid Gland.
Keun CHUNG ; Hyung Baek KIM ; Hee Dong KIM ; Jin Hak CHO
Korean Journal of Otolaryngology - Head and Neck Surgery 1999;42(9):1198-1202
Tuberculosis of the thyroid gland is extremely rare, with only a few reported cases in the recent literature. The diagnosis is based entirely upon the histological picture of the tubercle, which consists of aggregates of mononuclear epithelial cells, giants cells, and a border of lymphocytes. Tuberculosis may involve the thyroid gland in two main forms. One common form spreads to the thyroid as part of generalized dissemination, and the other one is focal or caseous tuberculosis of the thyroid, presenting as a nodule, thyroiditis, an abscess, or a carcinoma-like mass. The differential diagnosis from malignancy and other non tuberculous granulomatous lesion is impossible upon the clinical ground. Surgical intervention is essential in order to establish the definitive diagnosis and to exclude the possibility of tumors. We experienced a case of the tuberculosis of the thyroid gland presenting with palpable thyroid nodule in a 44 year-old female patient. She was clinically and biochemically euthyroid and her CT scans demonstrated multiple low density in both thyroid gland with strands in the subcutaneous fat layer. The mass was removed surgically and confirmed to be tuberculosis.
Abscess
;
Adult
;
Diagnosis
;
Diagnosis, Differential
;
Epithelial Cells
;
Female
;
Humans
;
Lymphocytes
;
Subcutaneous Fat
;
Thyroid Gland*
;
Thyroid Nodule
;
Tomography, X-Ray Computed
;
Tuberculosis*
9.Polygenic Risk Scores for Bipolar Disorder in Korean Populations in Comparison to European Populations
Min Jun CHOI ; Dong Bin LEE ; Yunji CHO ; Eun Young CHO ; Kyung Sue HONG ; Ji Hyun BAEK
Journal of Korean Neuropsychiatric Association 2021;60(3):167-173
Objectives:
This study examined whether the polygenic risk score (PRS) calculated from the most recent genome-wide association study for bipolar disorder (BD) of European ancestry patients is significantly associated with BD diagnosis in the Korean population.
Methods:
The study included 417 Korean patients with BD and 497 healthy controls. Genotyping was performed using the Korean Biobank Array. Summary statistics of the European samples from the Psychiatric Genomic Consortium were used as base data to generate the PRS for each individual. The program PRSice-2 was used to calculate the PRS. Logistic regression was conducted to determine the association between BD diagnosis and PRS for BD after adjusting for age and sex.
Results:
PRS for BD was significantly higher in patients diagnosed with BD compared to healthy controls. The PRS at the p-value threshold of 0.01 best explained the variance of BD after adjusting for age and sex (R2 =0.0061, p=0.039). Subgroup analyses were performed for bipolar I and II subgroups. In bipolar I patients, the PRS at the p-value threshold of 0.01 best explained the diagnosis (R2 =0.0165, p=0.0055), whereas no significant result was found for bipolar II patients.
Conclusion
PRS for BD calculated for the Korean sample showed a significant association with the BD diagnosis. This result suggests an overlapping genetic risk for BD between the European and Korean populations.
10.Polygenic Risk Scores for Bipolar Disorder in Korean Populations in Comparison to European Populations
Min Jun CHOI ; Dong Bin LEE ; Yunji CHO ; Eun Young CHO ; Kyung Sue HONG ; Ji Hyun BAEK
Journal of Korean Neuropsychiatric Association 2021;60(3):167-173
Objectives:
This study examined whether the polygenic risk score (PRS) calculated from the most recent genome-wide association study for bipolar disorder (BD) of European ancestry patients is significantly associated with BD diagnosis in the Korean population.
Methods:
The study included 417 Korean patients with BD and 497 healthy controls. Genotyping was performed using the Korean Biobank Array. Summary statistics of the European samples from the Psychiatric Genomic Consortium were used as base data to generate the PRS for each individual. The program PRSice-2 was used to calculate the PRS. Logistic regression was conducted to determine the association between BD diagnosis and PRS for BD after adjusting for age and sex.
Results:
PRS for BD was significantly higher in patients diagnosed with BD compared to healthy controls. The PRS at the p-value threshold of 0.01 best explained the variance of BD after adjusting for age and sex (R2 =0.0061, p=0.039). Subgroup analyses were performed for bipolar I and II subgroups. In bipolar I patients, the PRS at the p-value threshold of 0.01 best explained the diagnosis (R2 =0.0165, p=0.0055), whereas no significant result was found for bipolar II patients.
Conclusion
PRS for BD calculated for the Korean sample showed a significant association with the BD diagnosis. This result suggests an overlapping genetic risk for BD between the European and Korean populations.