1.Two Cases of Proliferating Trichilemmal Cyst.
Seon Kyo SUH ; Weon Ju LEE ; Jae Bok JUN ; Sang Lip CHUNG
Korean Journal of Dermatology 1994;32(2):300-304
We report two cases of proliferating trichilemmal cyst in a 61-ear-old woman and a 44-year-old woman who had a solitary tumor, on the left temporal area of the scalp and right flank, respectively. Histologically, the tumors were localized in the dermis and corisised of multilobulated cysts. The cyst walls were composed of liquamous epithelium showing trichilemmhl keratinization. Some of the cells had clear cytoplasm and were positive on PAS staining. Individiial cell keratinization, mild nuclear atypia were also found in the cyst walls. For the treatment, surgical excision was performed with sufficiert margin.
Adult
;
Cytoplasm
;
Dermis
;
Epithelium
;
Female
;
Humans
;
Scalp
2.Fixation for Reattachment of Trochanteric Fragment in Pertrochanteric Fracture Treated with Bipolar Hemiarthroplasty.
Weon Yoo KIM ; Chang Hwan HAN ; Jong Hun JI ; Young Yul KIM ; Kyo Sun LEE ; Se Won LEE
Journal of the Korean Hip Society 2006;18(1):67-72
Purpose: To retrospectively compare the fixation methods for reattaching a trochanteric fragment in a pertrochanteric fracture treated with bipolar hemiarthroplasty. Materials and methods: Forty cases of an unstable femur pertrochanteric fracture were analyzed and followed up for average of 19(6~40) months. There were 18 cases fixed with tension band wiring (group 1), 7 cases treated using modified tension band wiring with K-wires (group 2) and 15 cases treated with the GTRD (Greater Trochanteric Reattachment Device) (group 3). Result: Group 1 was treated with simple a surgical procedure and the results were good. The second group had firm fixation postoperatively but required additional surgery in two cases to remove the K-wires because of wire migration after ambulation. Group 3 had relatively good results but required more dissection and a longer operating time. Conclusion: Tension band wiring or GTRD are good fixation methods for reattaching trochanteric fragments in pertrochanteric fractures. Moreover, tension band wiring is recommended for old osteoporotic patients due to a simple procedure and firm fixation. The use of modified tension band wiring using K-wire or a Steinmann-pin should not be used due to the possibility of distant migration.
Femur*
;
Hemiarthroplasty*
;
Humans
;
Retrospective Studies
;
Walking
3.Prostate Cancer Detection in Clinical Urologic Practice : Comparison of Digital Rectal Examination, Serum PSA Level, and Transrectal Ultrasonography.
Weon Kyo SEO ; Geo Hwan KIM ; Choal Hee PARK ; Sung Choon LEE
Korean Journal of Urology 1996;37(2):150-155
We examined 990 self-referred men with one of urologic diseases over age 50 years to compare clinical usefulness of digital rectal examination(DRE), serum PSA level, and transrectal ultrasonography of the prostate(TRUS) in a screening program for prostatic cancer. Biopsy was performed in 201(20%) cases, of which 20 percent was diagnosed as prostate cancer. Sensitivity of DRE was 68%, specificity was 91%, and positive predictive value was 53%, respectively. Positive predictive values are 26% in cases with serum PSA level above 4ng/ml, 36% in cases with serum PSA above 10ng/ml and 40% for TRUS, respectively. When serum PSA below 4ng/ml and negative DRE, the positive predictive value was merely 6%. But when serum PSA above 10ng/ml and positive DRE, the positive predictive value increased to 72%. When serum PSA below 4ng/ml, negative DRE and negative TRUS, the positivepredictive value was merely 7%. However when serum PSA above 10ng/ml, positive DRE and positive TRUS, the positive predictive value was 80%. We conclude that DRE has greater diagnostic effect than the serum PSA level greater than 10ng/ml or hypoechoic area on TRUS and DRE with a serum PSA concentration is considered as an effective screening method of prostatic cancer in all urologic patients over 50 years of age. If DRE and serum PSA level are normal, there is no reason to proceed with TRUS and/or biopsy of the prostate.
Biopsy
;
Digital Rectal Examination*
;
Humans
;
Male
;
Mass Screening
;
Prostate*
;
Prostatic Neoplasms*
;
Sensitivity and Specificity
;
Ultrasonography*
;
Urologic Diseases
4.Intravesical Bacillus Calmette-Guerin Therapy of Superficial Bladder Tumor : Result of Long-Term Follow-Up.
Weon Kyo SEO ; Choal Hee PARK ; Chun Il KIM ; Sung Choon LEE
Korean Journal of Urology 1996;37(10):1117-1123
PURPOSE: Bacillus Calmette-Guerin (BCG) is the most effective intravesical agent for patients with superficial bladder cancer, but the long-term efficacy of BCG has not been established. We report our long-term experience of intravesical BCG therapy in the recurrence and progression for superficial bladder cancer. PATIENTS AND METHODS: Between 1985 and 1993. high risk patients with superficial bladder cancer were received complete TURB plus intravesical BCG (n=77). 120mg Tice-Chicago strain BCG was administered weekly for 6 weeks and then monthly for 3 months. Patients were considered treatment failure if either urinary cytology or biopsy results were positive for tumor on every 3 to 6 months followup examination. All patients reported have had a minimum 2-year followup, with the mean of 63 months. RESULTS: The 1st course of BCG was successful in 47 (6696) of 71 patients treated for prophylaxis and 3 (50%) of 6 treated for carcinoma in situ. Subsequent progression of disease occurred in 6 patients (8%) and cystectomy was performed in 2 patients (3%). The response rate for the total patients population treated with the 1st course was 65% (50 of 77). Of 27 patients who failed the 1st treatment course 21 patients were given the 2nd BCG treatment course. Of the 2nd BCG course, subsequent progression of disease occurred in 3 patients (14%), and cystectomy was performed in 2 patients (9%). Thirteen (68%) had complete response and 5 (26%) had new tumors, who had rendered free of disease after TURB plus intravesical therapy (mitomycin and/ or BCG). Although serious BCG complications (hepatitis, miliary Tbc, sepsis) were observed in 2 patients, side-effects were self-limiting and well controlled in the majority of patients (fever, bladder irritability, and hematuria). CONCLUSIONS: Intravesical BCG therapy seems to be effective to prevent recurrence and progression of superficial bladder cancer with long-term follow-up. However, we must note the possibility of fatal generalized complications in patients with grossly trauma of lower urinary tract.
Bacillus*
;
Biopsy
;
Carcinoma in Situ
;
Cystectomy
;
Follow-Up Studies*
;
Humans
;
Mycobacterium bovis
;
Recurrence
;
Treatment Failure
;
Urinary Bladder Neoplasms*
;
Urinary Bladder*
;
Urinary Tract
5.A Case of Prenatal Diagnosis of Thoracic Ectopia Cordis.
Seong Joon YOON ; Bong Shik SHIN ; Kyo Weon LEE ; Hye Sup SONG ; Jong Seul HAN ; Sung Do KIM ; Joo Seob KEUM ; Myung Sook KIM ; Tae Yun OH
Korean Journal of Obstetrics and Gynecology 1997;40(10):2317-2321
Ectopia cordis is defined as a congenital malposition of the heart partially or completely outside the thorax and often associated with sternal and congenital heart defects:surgical repair is generally unsuccessful because of the magnitude of the deformity and the associat-ed intracardiac anormalies. Four types of ectopia cordis are described : cervical, thoracic, abdominal and thoracoa- bdominal. Cervical and thoracic type are often fatal within days, because the heart is expo- sed and malformed. Abdominal type carries a better prognosis because cardiac abnormalities are less often found. The prognosis of thoraco-abdominal type mainly depends on the pre- sence of intracardiac abnormalities. We have experienced a case of thoracic ectopia cordis at 25 weeks' gestation by ultra- sonography, so present the case and the review with literature briefly.
Congenital Abnormalities
;
Ectopia Cordis*
;
Heart
;
Pregnancy
;
Prenatal Diagnosis*
;
Prognosis
;
Thorax
6.Terson Syndrome Caused by Intraventricular Hemorrhage Associated with Moyamoya Disease.
Ho Sang KIM ; Sang Weon LEE ; Soon Ki SUNG ; Eui Kyo SEO
Journal of Korean Neurosurgical Society 2012;51(6):367-369
Terson syndrome was originally used to describe a vitreous hemorrhage arising from aneurysmal subrarachnoid hemorrhage. Terson syndrome can be caused by intracranial hemorrhage, subdural or epidural hematoma and severe brain injury but is extremely rare in intraventricular hemorrhage associated with moyamoya disease. A 41-year-old man presented with left visual disturbance. He had a history of intraventicular hemorrhage associated with moyamoya disease three months prior to admission. At that time he was in comatose mentality. Ophthalmologic examination at our hospital detected a vitreous hemorrhage in his left eye, with right eye remaining normal. Vitrectomy with epiretinal membrane removal was performed. After operation his left visual acuity was recovered. Careful ophthalmologic examination is mandatory in patients with hemorrhagic moyamoya disease.
Adult
;
Aneurysm
;
Brain Injuries
;
Coma
;
Epiretinal Membrane
;
Eye
;
Hematoma
;
Hemorrhage
;
Humans
;
Intracranial Hemorrhages
;
Moyamoya Disease
;
Visual Acuity
;
Vitrectomy
;
Vitreous Hemorrhage
7.Adrenal Myelolipoma Treated with Hand-assisted Transperitoneal Laparoscopic Adrenalectomy.
Kyo Ik MO ; Dae Gon KIM ; Kyung Seop LEE ; Soon Weon KWEN ; Young Jin SEO
Korean Journal of Urology 2006;47(7):791-793
Adrenal myelolipoma is an uncommon, benign, hormonally non-active lesion that is composed of a mix of hemopoietic elements and mature adipose tissue. Most adrenal myelolipomas are incidentally found by ultrasonogram, computed tomography or magnetic resonance imaging. This tumor is commonly asymptomatic, although patients will occasionally present with nonspecific abdominal pain. We report here on a case of myelolipoma that was treated by Hand-assisted transperitoneal laparoscopic adrenalectomy.
Abdominal Pain
;
Adipose Tissue
;
Adrenal Glands
;
Adrenalectomy*
;
Humans
;
Laparoscopy
;
Magnetic Resonance Imaging
;
Myelolipoma*
;
Ultrasonography
8.Variations in Pulse Oximetry Plethysmographic Waveform Amplitude and Hemodynamic Assessment Induced by Passive Leg Raising in Spontaneously Breathing Adult Volunteers.
Jai Woog KO ; Sang Weon CHUNG ; Yo Seob PARK ; Kyo Joon LEE ; Dong Seok MOON ; In Byung KIM
The Korean Journal of Critical Care Medicine 2008;23(1):6-12
BACKGROUND: In hemodynamically unstable patients with spontaneous breathing activity, predicting volume responsivenss is a difficult challenge. Our objective was to test whether the respiratory changes in pulse oxymetry plethysmographic waveform amplitude (POP) and in stroke volume (deltaSV) could predict fluid responsiveness to passive leg raising (PLR) in normal volunteers. METHODS: We investigated 25 normal volunteers. We assessed hemodynamic status (HR, SBP, MAP, CI and SVI) and calculated the respiratory variation in pulse oximetry plethysmographic waveform amplitude at supine and after PLR. We attached a pulse oximeter of 25 spontaneously breathing volunteers as several time points: after 1 min and 5 min in supine position and during PLR at 60degrees. Heart rate, non-invasive blood pressures (mean arterial pressure, systolic blood pressure), maximal POP (POPmax), minimal POP (POPmin) and deltaPOP defined as (POPmax-POPmin)/[(POPmax+POPmin)/2] were recorded using monitor. RESULTS: Comparing to supine and PLR, systolic blood pressure and mean arterial pressure were not different, but the change in cardiac index, stroke volume and respiratory variation in POP were significant different. In response group (> or =10% in deltaCI), the change in cardiac index, stroke volume and respiratory variation in POP were significant greater. CONCLUSION: PLR induces a significant decrement of variation in POP amplitude among spontaneouely breathing volunteers. We suppose that the changes in stroke volume and the respiratory variation in pulse oximetry plethysmographic waveform amplitude induced by PLR predict fluid responsiveness in spontaneous breathing patients.
Adult
;
Arterial Pressure
;
Blood Pressure
;
Heart Rate
;
Hemodynamics
;
Humans
;
Leg
;
Organothiophosphorus Compounds
;
Oximetry
;
Respiration
;
Stroke Volume
;
Supine Position
9.Efficacy of Maternal Serum Corticotropin Releasing Factor Levels in Diagnosis of Pregnancies Complicated by Preterm Labor.
Pil Je CHO ; Bum Young KIM ; Ick Joon CHOI ; Kyo Weon LEE ; Byoung Ik CHOI ; Hye Sup SONG ; Jong Seul HAN ; Sung Do KIM
Korean Journal of Obstetrics and Gynecology 1997;40(9):1863-1870
Human placenta synthesizes bioactive corticotropin releasing factor(CRF), a 41 amino acid peptide, which displays identical immunological, biological, and chemical characteristics to hypothalamic CRF. Placental CRF enters the maternal circulation and stimulates release of local placental prostaglandin E2 and F2alpha that have a central role in the mechanisms controlling uterine contractility and cervical softening. A large number of clinical investigators has suggested that placental CRF may be involved in mechanisms leading to labor. As well as CRF`s rises in term pregnancy, maternal serum CRF levels are also elevated in pregnancies complicated by preterm labor. So the clinical use of maternal serum CRF levels as a predictor of preterm labor was proposed. Therefore, we have carried out a prospective study on the efficacy of maternal serum CRF levels in diagnosis of preterm labor. In this study, the subjects consisted of 30 women admitted for the treatment of preterm labor and another 30 women with normal pregnancies between 28 and 36 completed weeks of gestation, and their serum CRF levels were assessed. The results were as follows: 1. In both groups, serum CRF levels were increased as being associated to gestational ages, especially in late pregnancy. 2. In a comparative study between two groups, the serum CRF values of pregnancies complicated by preterm labor were significantly higher than their values of control group(p<0.05). 3. In pregnancies complicated by preterm labor, the serum CRF values of preterm delivery were not significantly elevated comparing with their values of other pregnancies complicated bypreterm labor(p>0.05).
Adrenocorticotropic Hormone*
;
Corticotropin-Releasing Hormone*
;
Diagnosis*
;
Dinoprostone
;
Female
;
Gestational Age
;
Humans
;
Obstetric Labor, Premature*
;
Placenta
;
Pregnancy*
;
Prospective Studies
;
Research Personnel
10.A Comparative Study of an Anti-Thrombotic Small-Diameter Vascular Graft with Commercially Available e-PTFE Graft in a Porcine Carotid Model
Kyo Seon LEE ; Mukhammad KAYUMOV ; Gladys A. EMECHEBE ; Do-Wan KIM ; Hwa-Jin CHO ; Yun-Jin JEONG ; Dong-Weon LEE ; Jun-Kyu PARK ; Chan-Hee PARK ; Cheol-Sang KIM ; Francis O. OBIWELUOZOR ; In-Seok JEONG
Tissue Engineering and Regenerative Medicine 2022;19(3):537-551
BACKGROUND:
We have designed a reinforced drug-loaded vascular graft composed of polycaprolactone (PCL) and polydioxanone (PDO) via a combination of electrospinning/3D printing approaches. To evaluate its potential for clinical application, we compared the in vivo blood compatibility and performance of PCL/PDO ? 10%DY grafts doped with an antithrombotic drug (dipyridamole) with a commercial expanded polytetrafluoroethylene (e-PTFE) graft in a porcine model.
METHODS:
A total of 10 pigs (weight: 25–35 kg) were used in this study. We made a new 5-mm graft with PCL/PDO composite nanofiber via the electrospinning technique. We simultaneously implanted a commercially available e-PTFE graft (n = 5) and our PCL/PDO ? 10%DY graft (n = 5) into the carotid arteries of the pigs. No anticoagulant/antiplatelet agent was administered during the follow-up period, and ultrasonography was performed weekly to confirm the patency of the two grafts in vivo. Four weeks later, we explanted and compared the performance of the two grafts by histological analysis and scanning electron microscopy (SEM).
RESULTS:
No complications, such as sweating on the graft or significant bleeding from the needle hole site, were seen in the PCL/PDO ? 10%DY graft immediately after implantation. Serial ultrasonographic examination and immunohistochemical analysis demonstrated that PCL/PDO ? 10%DY grafts showed normal physiological blood flow and minimal lumen reduction, and pulsed synchronously with the native artery at 4 weeks after implantation. However, all e-PTFE grafts occluded within the study period. The luminal surface of the PCL/PDO ? 10%DY graft in the transitional zone was fully covered with endothelial cells as observed by SEM.
CONCLUSION
The PCL/PDO ? 10%DY graft was well tolerated, and no adverse tissue reaction was observed in porcine carotid models during the short-term follow-up. Colonization of the graft by host endothelial and smooth muscle cells coupled with substantial extracellular matrix production marked the regenerative capability. Thus, this material may be an ideal substitute for vascular reconstruction and bypass surgeries. Long-term observations will be necessary to determine the anti-thrombotic and remodeling potential of this device.