1.Radiotherapy of Patient with Implanted Cardiac Pacemaker.
Hong Gyun WU ; Bo Kyoung KIM ; Wee Saeng KANG ; Jin Hong PARK
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2000;18(1):46-50
A 70 years old female patient with thyroid cancer received palliative radiation therapy for neck swelling and hemoptysis. She had a cardiac pacemaker under her chest due to complete AV block since 8 years ago. We present clinical detail and review previously reported articles.
Aged
;
Atrioventricular Block
;
Female
;
Hemoptysis
;
Humans
;
Neck
;
Radiotherapy*
;
Thorax
;
Thyroid Neoplasms
2.Effect of Cryosurgery on Hypertrophic Scars / Keloids.
Sung Ju PARK ; Hyung Geun MIN ; Ho Gyun LEE ; Jong Min KIM ; Eil Seong LEE ; Hee Jung KANG
Korean Journal of Dermatology 1998;36(5):765-771
BACKGROUND: A variety of therapeutic regimens has been used in the treatment of hypertrophic scars/keloids with onsatisfactory final results. Application of cryosurgery could be beneficial sinee it was reported to produce less scarring and recurrence after treatment compared with other methods. Objective This study was undertaken to evaluate the effect of the cryosurgery through objective, quantitative measurement of hypertrophic scar/keloid thickness and to assess the influence of the cryosurgery on fibroblasts. The latter was achieved through fibroblast cultures established from hypertrophic scars/keloids. METHODS: Eight patients, ageA 17 to 47 years old, with hypertrophic scars/keloids were treated with liquid nitrogen using the cantact method. One freeze-thaw cycle of 10-30 seconds per lesion was employed, and if needed, treatment was repeated every 20 to 40 days. The thicknesses of the lesions were measured objective,ly with ultrasound in five patients, before and after cryosurgery and were compared with controlled scars in other areas. In three patients, we cultured fibroblasts from the treated and the untreated lesions and exmuned the rate of fibroblast proliferation and collagen production. RESULTS: In all five patients, thicknesses of the hypertrophic scars/keloids decreased compared to those of controlled areas after treatment. Five of 6 hypertrophic scar cell lines demonsbated decreased fibroblast proliferation rates in comparison to control fibroblast lines. Collagen produced by the fibroblasts was variable. CONCLUSION: Cyosurgery was effective and safe in the treatment of hypertrophic scars/keloids.
Cell Line
;
Cicatrix
;
Cicatrix, Hypertrophic*
;
Collagen
;
Cryosurgery*
;
Fibroblasts
;
Humans
;
Keloid*
;
Middle Aged
;
Nitrogen
;
Recurrence
;
Ultrasonography
3.Assessment of the Quantitative Ability of AdvanSure TB/NTM Real-Time PCR in Respiratory Specimens by Comparison with Phenotypic Methods.
Hyeyoung LEE ; Kang Gyun PARK ; Gundong LEE ; Joonhong PARK ; Yong Gyu PARK ; Yeon Joon PARK
Annals of Laboratory Medicine 2014;34(1):51-55
Accurate quantification of mycobacterial load is important to evaluate disease severity and to monitor the course of treatment in tuberculosis (TB). We evaluated the quantitative capability of the AdvanSure TB/NTM real-time PCR kit (LG Life Science, Korea) to determine the cycle threshold (Ct) for mycobacterial burden. We retrospectively analyzed data from 108 patients whose respiratory specimens (sputums and bronchoalveolar lavage fluids) were positive for Mycobacterium tuberculosis complex (85 culture-positive and 23 culture-negative specimens). We compared Ct values with grades of acid-fast bacilli (AFB) staining, semi-quantitative colony count on solid medium, and time to positivity (TTP) in liquid and solid media. We also investigated the cutoff Ct value for predicting stain-positive status. Ct value showed significant reverse correlation with AFB staining grade (r(s)=-0.635, P<0.01). Ct value significantly decreased as the semi-quantitative counts on the solid medium increased (P<0.001), and the mean Ct value of each of the groups 1+, 2+, 3+, and 4+ were 29.0, 30.0, 27.1, and 25.5, respectively. A weak correlation between Ct value and TTP in liquid and solid media was observed (r(s)=0.468 and 0.365, respectively). A cutoff Ct value of <33.2 best predicted stain positivity, with a sensitivity of 95.0% and a specificity of 32.0%. Our findings suggest the potential use of AdvanSure TB/NTM real-time PCR kit for quantitatively determining bacterial burden, albeit with some enhancements.
Area Under Curve
;
Bronchoalveolar Lavage Fluid/microbiology
;
DNA, Bacterial/*analysis
;
Humans
;
Mycobacterium tuberculosis/genetics/*isolation & purification
;
Phenotype
;
ROC Curve
;
Reagent Kits, Diagnostic
;
*Real-Time Polymerase Chain Reaction
;
Retrospective Studies
;
Sensitivity and Specificity
;
Sputum/microbiology
;
Tuberculosis/diagnosis/microbiology
4.Direct Identification and Antimicrobial Susceptibility Testing of Bacteria From Positive Blood Culture Bottles by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry and the Vitek 2 System.
Sung Jin JO ; Kang Gyun PARK ; Kyungja HAN ; Dong Jin PARK ; Yeon Joon PARK
Annals of Laboratory Medicine 2016;36(2):117-123
BACKGROUND: We evaluated the reliability and accuracy of the combined use of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) bacterial identification and Vitek 2 antimicrobial susceptibility testing (AST) for bacteria from positive blood culture bottles. METHODS: Direct identification and AST were performed in parallel to the standard methods in monomicrobial positive blood culture bottles. In total, 254 isolates grown on aerobic and/or anaerobic bottles were identified with MALDI-TOF Vitek MS (bioMerieux, France), and 1,978 microorganism/antimicrobial agent combinations were assessed. For isolates from anaerobic bottles, an aliquot of the culture broth was centrifuged, washed, and filtered through a nylon mesh. For isolates from aerobic/pediatric bottles, a lysis step using 9.26% ammonium chloride solution and 2% saponin solution was included. RESULTS: The overall correct identification rate was 81.8% (208/254) and that for gram-positive/gram-negative isolates was 73.9%/92.6%, respectively, and it was 81.8%, 87.6%, and 57.9% for isolates from aerobic, anaerobic, and pediatric bottles, respectively. Identification was not possible in 45 cases, and most of these isolates were streptococci (N=14) and coagulase-negative staphylococci (N=11). Misidentification occurred only in one case. Compared with standard methods, direct AST showed 97.9% (1,936/1,978) agreement with very major error of 0.25%, major error of 0.05%, and minor error of 1.8%. CONCLUSIONS: This simple and cost-effective sample preparation method gives reliable results for the direct identification and AST of bacteria. For the identification of streptococci and coagulase-negative staphylococci, the method should be further improved.
Adult
;
Ammonium Chloride/chemistry
;
Anti-Infective Agents/*pharmacology
;
Child
;
Gram-Negative Bacteria/drug effects/*isolation & purification/metabolism
;
Gram-Positive Bacteria/drug effects/*isolation & purification/metabolism
;
Humans
;
Reagent Kits, Diagnostic
;
Saponins/chemistry
;
*Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
5.The Clinical Significance of Cystoscopy and Computed Tomography in Pretrearment Evaluation of Invasive Cervical Cancer.
Je Hoon LEE ; Chul Min LEE ; Young Sook KANG ; Young Joon PARK ; Sung Sik HAN ; Gyo Hoon PARK ; Yong Gyun JO ; Hoon CHOI ; Bok Rin KIM ; Hong Gyun LEE
Korean Journal of Obstetrics and Gynecology 2000;43(11):2027-2032
OBJECTIVE: Cystoscopy has been included as diagnostic procedure for pretreatment evaluation of cervical cancer by FIGO. However, its invasiveness brings up a question regarding the necessity of inclusion in staging work up of cervical cancer. We performed this study to evaluate the clinical implication of cystoscopy in cervical cancer staging. METHODS: 128 patients with invasive cervical cancer patients who were histologically diagnosed from Jan 1995 to Dec 1999 were retrospectively reviewed. Physical examination, computed tomography (CT), cystoscopy were performed in all patients. The distribution of FIGO stage was Ib 48.4%, II 35.2%, III 8.6%, and IV 7.8%. Bladder invasion was evaluated in CT and histopathologic examination was performed on cystoscopy when invasion was suspected. McNemar test was used to compare the finding in CT and cystoscopy for matched patients. P-value of 0.05 was regarded as statistically significant. RESULTS: Among seven patients whose bladder was suspected to be invaded by cervical cancer in CT scan, three patients had actual bladder invasion confirmed by cystoscopy (positive predictive rate = 42.9%). CT was statistically comparable to cystoscopy (P = 0.375, McNemar test; contingency coefficient = 0.481). CONCLUSION: Cystoscopy, which is an invasive procedure, may not be necessary and might be substituted by CT scan for pretreatment evaluation in some subset of cervical cancer patients.
Cystoscopy*
;
Humans
;
Physical Examination
;
Retrospective Studies
;
Tomography, X-Ray Computed
;
Urinary Bladder
;
Uterine Cervical Neoplasms*
6.First Case of Skin and Soft Tissue Infection Caused by Mycoplasma hominis in a Pediatric Immunocompromised Patient.
Hanwool CHO ; Kang Gyun PARK ; Seong Beom HAN ; Nack Gyun CHUNG ; Yeon Joon PARK
Annals of Laboratory Medicine 2017;37(4):346-348
No abstract available.
Immunocompromised Host*
;
Mycoplasma hominis*
;
Mycoplasma*
;
Skin*
;
Soft Tissue Infections*
7.Direct Identification of Urinary Tract Pathogens From Urine Samples Using the Vitek MS System Based on Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry.
Yeongsic KIM ; Kang Gyun PARK ; Kyungwon LEE ; Yeon Joon PARK
Annals of Laboratory Medicine 2015;35(4):416-422
BACKGROUND: We evaluated the coincidence rate between Vitek MS system (bioMerieux, France) and Vitek 2 in identifying uropathogens directly from urine specimens. METHODS: Urine specimens submitted to our microbiology laboratory between July and September 2013 for Gram staining and bacterial culture were analyzed. Bacterial identification was performed by using the conventional method. Urine specimens showing a single morphotype by Gram staining were processed by culturing and matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). Of 2,370 urine specimens, 251 showed a single morphotype on Gram staining, and among them, 202 were available for MALDI-TOF MS. RESULTS: In these 202 specimens, colony growth was observed in 189 specimens, and 145 specimens had significant growth of single-colony morphotype in culture. One hundred and ten (75.9%) of them had colony counts of > or =10(5) colony-forming units (CFU)/mL and included 71 enteric gram-negative bacteria (GNB), 5 glucose-non-fermenting GNB, 9 gram-positive cocci (GPC), and 25 yeasts. Furthermore, 70 (98.6%), 3 (60.0%), 4 (44.4%), and 5 (20.0%), respectively, of these were correctly identified by Vitek MS. Thirty-one specimens (21.4%; 11 GNB, 7 GPC, 12 yeasts, and 1 gram-positive bacillus) had colony counts of 10(4)-10(5) CFU/mL. Four specimens (2.8%) yielded colony counts of 10(3)-10(4) CFU/mL. CONCLUSIONS: Vitek MS showed high rate of accuracy for the identification of GNB in urine specimens (> or =10(5) CFU/mL). This could become a rapid and accurate diagnostic method for urinary tract infection caused by GNB. However, for the identification of GPC and yeasts, further studies on appropriate pre-treatment are warranted.
Gram-Negative Bacteria
;
Gram-Positive Cocci
;
Mass Spectrometry*
;
Stem Cells
;
Urinary Tract Infections
;
Urinary Tract*
;
Yeasts
8.The influence of adjuvant radiotherapy on patterns of failure and survivals in uterine carcinosarcoma.
Hae Jin PARK ; Hak Jae KIM ; Hong Gyun WU ; Hans KIM ; Sung Whan HA ; Soon Beom KANG ; Yong Sang SONG ; Noh Hyun PARK ; Jae Won KIM
Radiation Oncology Journal 2011;29(4):228-235
PURPOSE: To evaluate the impact of postoperative radiotherapy (PORT) on patterns of failure and survivals in uterine carcinosarcoma patients treated with radical surgery. MATERIALS AND METHODS: Between October 1998 and August 2010, 19 patients with stage I-III uterine carcinosarcoma received curative hysterectomy and bilateral salpingo-oophorectomy with or without PORT at Seoul National University Hospital. Their hospital medical records were retrospectively reviewed. PORT and non-PORT groups included 11 and 8 patients, respectively. They were followed for a mean of 22.7 months (range, 7.8 to 126.6 months). RESULTS: At 5 years, the overall survival rates were 51.9% for entire, 61.4% for PORT, and 41.7% for non-PORT groups, respectively. There was no statistical difference between PORT and non-PORT groups with regard to overall survival (p = 0.682). Seven out of 19 (36.8%) patients showed treatment failures, which all happened within 12 months. Although the predominant failures were distant metastasis in PORT group and loco-regional recurrence in non-PORT group, there was no statistically significant difference in loco-regional recurrence-free survival (LRRFS) (p = 0.362) or distant metastasis-free survival (DMFS) (p = 0.548). Lymph node metastasis was found to be a significant prognostic factor in predicting poor LRRFS (p = 0.013) and DMFS (p = 0.021), while the International Federation Gynecology and Obstetrics (FIGO) stage (p = 0.043) was associated with LRRFS. CONCLUSION: Considering that adjuvant radiotherapy after surgical resection was effective to decrease loco-regional recurrence and most treatment failures were distant metastasis, multimodal therapy including surgery, radiotherapy, and chemotherapy might be an optimal treatment for uterine carcinosarcoma patients.
Carcinosarcoma
;
Gynecology
;
Humans
;
Hysterectomy
;
Lymph Nodes
;
Medical Records
;
Neoplasm Metastasis
;
Obstetrics
;
Radiotherapy, Adjuvant
;
Recurrence
;
Retrospective Studies
;
Survival Rate
;
Treatment Failure
;
Uterus
9.Two Concurrent Chromosomal Aberrations Involving Three-way t(3;21;8)(p21;q22;q22) and Two-way t(2;11)(q31;p15) Translocations in a Case of de novo Acute Myeloid Leukemia.
Gyun Cheol PARK ; Eun Hae CHO ; Sung Ho KANG ; Sook Jin JANG ; Dae Soo MOON ; Geon PARK
Laboratory Medicine Online 2016;6(4):246-249
One of the most frequent structural chromosomal anomaly is t(8;21)(q22;q22) that occurs in approximately 5-15% of all acute myeloid leukemia (AML). However, t(3;21)(p21;q22) and t(2;11)(q31;p15) translocations are rarely reported in AML. Here, we report a unique case of AML with two translocations, t(3;21;8)(p21;q22;q22) and t(2;11)(q31;p15). Using multiplex reverse transcription polymerase chain reaction, we identified a RUNX1-RUNX1T1 fusion gene. Following a second relapse, the patient did not respond to therapy and died 55 months following the first diagnosis. We believe that this is the first case describing concurrent chromosomal aberrations involving three-way t(3;21;8) and two-way t(2;11) translocations in de novo acute myeloid leukemia.
Chromosome Aberrations*
;
Diagnosis
;
Humans
;
Leukemia, Myeloid, Acute*
;
Polymerase Chain Reaction
;
Recurrence
;
Reverse Transcription
10.Anticancer Activity of RetinoblastomaRB Gene Transfection in Cultured Ovarian Cancer Cells.
Se Young PARK ; Yong Gyun PARK ; Gyu Wan LEE ; Yong Ho LEE ; Young Tae KIM ; Jae Sung KANG ; Gyung Il LEE ; Byung Sam KOO
Korean Journal of Obstetrics and Gynecology 2000;43(12):2178-2184
No abstract available.
Ovarian Neoplasms*
;
Transfection*