1.A case of parenchymal consolidative lesions with air-bronchogram in chest CT scan.
Jae Yong KWAK ; Jae Seok SEO ; Yong Chul LEE ; Yang Keun RHEE
Tuberculosis and Respiratory Diseases 1993;40(2):203-207
No abstract available.
Thorax*
;
Tomography, X-Ray Computed*
2.Subdural Empyema in Infants.
Yeon Sang KWAK ; Min Suk OH ; Sung Keun RYU
Journal of Korean Neurosurgical Society 1999;28(11):1594-1600
OBJECTIVE: The goal of this study was to review the etiologies, phathophysiology, clinical presentations and to compare the results of the surgical methods of subdural empyema especially in infants. PATIENTS AND METHODS: We reviewed the clinical data of five infantile subdural empyemas experienced in our hospital from 1993 to 1998 which were all surgically treated by craniotomy or burr hole trephination. We experienced five cases of infantile subdural empyema: two males and three females. The ages ranged from 40 days to 11 months. RESULTS: The etiologies of all five cases were unproven but all five cases had meningitis before the subdural empyemas were diagnosed. The causative organism in one was streptococcus pneumoniae, and the other were unknown. Two were treated with craniotomy(one with a good outcome and the other died) and three were treated with burr hole trephination(all three had a good outcome). CONCLUSION: Subdural empyema is a rapid progressing disease and it is important to detect and treat in the early stages of disease. The choice of surgical method must be based on the stage of the disease and its location in the cranial cavity.
Craniotomy
;
Empyema, Subdural*
;
Female
;
Humans
;
Infant*
;
Male
;
Meningitis
;
Streptococcus pneumoniae
;
Trephining
3.Is neoadjuvant androgen deprivation therapy beneficial in prostate cancer treated with definitive radiotherapy?.
Keun Yong EOM ; Sung W HA ; Eunsik LEE ; Cheol KWAK ; Sang Eun LEE
Radiation Oncology Journal 2014;32(4):247-255
PURPOSE: To determine whether neoadjuvant androgen deprivation therapy (NADT) improves clinical outcomes in patients with prostate cancer treated with definitive radiotherapy. MATERIALS AND METHODS: We retrospectively reviewed medical records of 201 patients with prostate cancer treated with radiotherapy between January 1991 and December 2008. Of these, 156 patients with more than 3 years of follow-up were the subjects of this study. The median duration of follow-up was 91.2 months. NADT was given in 103 patients (66%) with median duration of 3.3 months (range, 1.0 to 7.7 months). Radiation dose was escalated gradually from 64 Gy to 81 Gy using intensity-modulated radiotherapy technique. RESULTS: Biochemical relapse-free survival (BCRFS) and overall survival (OS) of all patients were 72.6% and 90.7% at 5 years, respectively. BCRFS and OS of NADT group were 79.5% and 89.8% at 5 years and those of radiotherapy alone group were 58.8% and 92.3% at 5 years, respectively. Risk group (p = 0.010) and radiation dose > or =70 Gy (p = 0.017) affected BCRFS independently. NADT was a significant prognostic factor in univariate analysis, but not in multivariate analysis (p = 0.073). Radiation dose > or =70 Gy was only an independent factor for OS (p = 0.007; hazard ratio, 0.261; 95% confidence interval, 0.071-0.963). CONCLUSION: NADT prior to definitive radiotherapy did not result in significant benefit in terms of BCRFS and OS. NADT should not be performed routinely in the era of dose-escalated radiotherapy.
Follow-Up Studies
;
Humans
;
Medical Records
;
Multivariate Analysis
;
Prostatic Neoplasms*
;
Radiotherapy*
;
Radiotherapy, Intensity-Modulated
;
Retrospective Studies
4.Estimation of creatinine clearance and urinary creatinine derived from plasma creatinine and body anthropometries.
Hyun Joo KWAK ; Young Guk KIM ; Keun Haeng CHO ; Kee Hwan YOO ; Soon Kyum KIM
Korean Journal of Nephrology 1993;12(3):286-294
No abstract available.
Creatinine*
;
Plasma*
5.A clinical study of the osteoradionecrosis of the jaw.
Yong Kack KIM ; Heon Seok YU ; Jae Keun KWAK ; Kyu Yeong KIM
Journal of the Korean Association of Oral and Maxillofacial Surgeons 1993;19(2):177-184
No abstract available.
Jaw*
;
Osteoradionecrosis*
6.A clinical study of the osteoradionecrosis of the jaw.
Yong Kack KIM ; Heon Seok YU ; Jae Keun KWAK ; Kyu Yeong KIM
Journal of the Korean Association of Oral and Maxillofacial Surgeons 1993;19(2):177-184
No abstract available.
Jaw*
;
Osteoradionecrosis*
7.Arthroscopic Partial or Total Meniscectomy: 34 Cases Analysis
Jin Whan AHN ; Bong Keun KIM ; Kyung Deok KWAK ; Chong Kwan KIM
The Journal of the Korean Orthopaedic Association 1983;18(6):1131-1140
No abstract available in English.
8.Arthroscopic Meniscus Repair: A Short Term Result.
Hyoun Oh CHO ; Kyoung Duck KWAK ; Sung Do CHO ; Woo Keun JEONG
Journal of the Korean Knee Society 1997;9(2):215-219
The function of the meniscus and subsequently the importance of meniscus preservation are well known. Thirty-two patients who underwent arthroscopic meniscus repair between 1993 and 1995 were studied retrospectively. Twenty menisci were repaired using modified Henning inside-out technique and the remaining twelve meaisci, outside-in technique. The average delay in surgery was two hundred days. Follow-up was done from 1 year to 3 years (average 22.4 months). The medial meniscus was repaired in 22 cases and the lateral meniscus including two saucerized discoid meniscus in 10 cases. Fourteen patients had anterior cruciate ligament (ACL) tear and other associated knee injuries were lateral condyle fra'cture of femur in one case and lateral condyle &acture of tibia in one case. Assessment of the result was based on the evaluation form of the International Knee Documentation CommitteegKDC). Twenty-seven patients (84.3%) were normal to nearly normal. Abnormal and severely abnormal results were mainly affected by the result of treatment of ACL tear.
Anterior Cruciate Ligament
;
Femur
;
Follow-Up Studies
;
Humans
;
Knee
;
Knee Injuries
;
Menisci, Tibial
;
Retrospective Studies
;
Tibia
9.Differentiation of Hepatocellular Carcinoma from Intrahepatic Cholangiocarcinoma as the Cause of Biliary Obstruction: Value of Dynamic CT During the Hepatic Arterial Phase.
June Sik CHO ; Dae Hong KIM ; Kyung Sook SHIN ; Jin Keun KWAK
Journal of the Korean Radiological Society 1998;38(4):659-666
PURPOSE: To evaluate the usefulness of dynamic CT during the hepatic arterial phase with rapid IV injection ofcontrast material in distinguishing hepatocellular carcinoma (HCC) from intrahepatic cholangiocarcinoma (ICAC) asthe cause of biliary obstruction. MATERIALS AND METHODS: We retrospectively reviewed two-phase dynamic incrementalCT or helical CT findings in 22 patients with intrahepatic duct obstruction secondary to pathologically provenHCCs (n=12) or ICACs (n=10). Two-phase CT scans were obtained 20-45 seconds (hepatic arterial phase) or 2 minutes(equilibrium phase) after the initiation of a bolus injection of contrast material (5 mL/sec, 150 mL). Theenhancement patterns of tumors, as seen on two-phase images, were classified as hypo-, iso-, or hyperattenuated,relative to surrounding liver parenchyma. Two-phase images were compared and correlated with pathologic findings. RESULTS: During the hepatic arterial phase, diffuse high-enhancement was seen in nine HCCs (75%) and partialenhancement in three (25%); five (50%) of the ten ICACs were hypodense and five (50%) were hypodense withperipheral enhancement. During the equilibrium phase, however, all HCCs were hypodense and capsular enhancementwas seen in four cases (33.3%). All ICACs were hypodense with mild peripheral or central heterogeneousenhancement. Contrast enhancement patterns of HCCs during the hepatic arterial phase were significantly different(P<.0001) from those of ICACs. CONCLUSION: Our results suggest that dynamic CT during the hepatic arterial phase,with rapid IV injection of contrast material, is useful for the differentiation of HCC from ICAC as the cause ofbiliary obstruction.
Carcinoma, Hepatocellular*
;
Cholangiocarcinoma*
;
Humans
;
Liver
;
Retrospective Studies
;
Tomography, Spiral Computed
;
Tomography, X-Ray Computed
10.An Anterior Surgical Approach to Upper Thoracic Spine.
Sang Jin KIM ; Yong Tae KWAK ; Sang Keun PARK
Journal of Korean Neurosurgical Society 1994;23(2):242-247
Anterior exposure to the upper two thoracic vertebrae is technically difficult with transcervical approach. The authors used a transstermal biclavicular approach to the T1 metastatic adenocarcinome in a 47 year old patient. The advantages of this approach are that : 1) it levels the insertion of the sternocleidomastoid muscles intact and prevents the complication of respiratory problem, 2) it gives most wide surgical field among the other similar approaches, and 3) this procedure is not transpleural but transmediastinal approach.
Humans
;
Middle Aged
;
Muscles
;
Spine*
;
Thoracic Vertebrae