1.Erectile Function and Long-term Oncologic Outcomes of Nerve-Sparing Robot-Assisted Radical Cystectomy: Comparison With Open Radical Cystectomy
Se Yun KWON ; Yun Sok HA ; Tae Hwan KIM ; Tae Gyun KWON
Korean Journal of Urological Oncology 2018;16(1):32-37
PURPOSE: We performed nerve-sparing robot-assisted radical cystectomy (nsRARC) and compared the operative outcomes of nsRARC and open radical cystectomy (ORC). MATERIALS AND METHODS: The data of 38 patients that underwent ORC or nsRARC for bladder cancer between July 2009 and April 2014 (23 ORC and 15 RARC) were retrospectively analyzed. Data were collected on patient demographics, pathologic stages, perioperative outcomes, and oncologic outcomes as well as on erectile function. Five-year overall survival and cancer-specific survival were analyzed using the Kaplan-Meier method. Erection function recovery was defined as the ability to achieve penetration ≥50% of the time and to maintain an erection sufficient enough for penetration ≥50% of the time at 12 months after surgery. RESULTS: No significant differences were found between the nsRARC and ORC groups in terms of age, sex, body mass index, American Society of Anesthesiologists physical status, or clinical stage. Mean estimated blood loss was significantly less in the nsRARC group (205.3 mL vs. 394 mL, p=0.011), but mean operative time was significantly greater (520.3 minutes vs. 415.0 minutes, p=0.004). Five-year overall survival and cancer-specific survival were 86.7% and 86.7%, respectively, for nsRARC, and 77.7% and 86.7% for ORC. With respect to erectile function, the overall postoperative potency rate at 12 months was 40.0% in the RARC group and 9.5% in the ORC group, and this difference was significant (p=0.021). CONCLUSIONS: Our clinical experiences indicate nsRARC in selected patients is a feasible procedure in terms of oncologic outcome and that it preserves erectile function relatively effectively.
Body Mass Index
;
Cystectomy
;
Demography
;
Humans
;
Methods
;
Operative Time
;
Recovery of Function
;
Retrospective Studies
;
Urinary Bladder Neoplasms
2.Initial Experiences of Retropubic Radical Prostatectomy Including Antegrade Nerve Sparing, Continuous Anastomosis, and Preservation of Endopelvic Fascia
Korean Journal of Urological Oncology 2020;18(1):47-52
Purpose:
We compared retropubic radical prostatectomy (RRP) with various laparoscopic radical prostatectomy procedures with RRP as previous performed in our institution.
Materials and Methods:
Demographics, perioperative and functional outcomes of 78 patients that underwent modified RRP (mRP; N=53) or established RRP (eRP; N=25) at our institution from January 2013 to December 2018 were evaluated retrospectively. Postoperative incontinence and erectile dysfunction are involved functional outcomes. During the modified procedure, with preserving endopelvic fascia, the prostate was dissected in an antegrade fashion with bilateral nerve sparing, and then urethrovesical anastomosis was performed with continuous suture.
Results:
The mean age was older in mRP (68.7±5.3 years) than mRP (65.9±5.0 years) and mean prostate volume was larger in mRP (40.1±18.6 mL) than eRP (30.4±14.0 mL). Mean operative time was longer in eRP (227.0±111.1 minutes) than mRP (154.6±31.6 minutes) and estimated blood loss and complicate rate were similar in 2 groups. The pathologic stage was all T2 stage in eRP, however, in mRP T2 stage was 31 and T3 stage was 22. The pathologic Gleason score was higher in mRP than eRP (p=0.001). Positive surgical margin was significantly higher in mRP, however, biochemical recurrence was insignificantly higher in mRP. Incontinence rates at 3 and 12 months after eRP decreased from 96.0% to 28.0% and after mRP decreased from 49.1% to 7.5%. Overall postoperative potency rate at 12 months was significant different in eRP and mRP groups (8.0% and 34.0%).
Conclusions
The mRP was found to have favorable functional outcome and short operative time. This technique might be adopted by inexperienced urologic surgeons as a standard procedure. (Korean J Urol Oncol 2020;18:47-52)
3.Initial Experiences with Robot-Assisted Laparoscopic Radical Cystectomy.
Se Yun KWON ; Bum Soo KIM ; Tae Hwan KIM ; Eun Sang YOO ; Tae Gyun KWON
Korean Journal of Urology 2010;51(3):178-182
PURPOSE: Robot-assisted laparoscopic radical cystectomy (RLRC) is a new option for the treatment of muscle-invasive bladder cancer, and case series for RLRC have been increasing recently. We report our operative technique and initial experiences with RLRC with extracorporeal urinary diversion. MATERIALS AND METHODS: Between October 2008 and November 2009, 17 consecutive patients with muscle-invasive bladder cancer underwent RLRC, pelvic lymph node dissection, and extracorporeal urinary diversion. Urinary diversion included 13 ileal conduits and 4 orthotopic neobladders (Studer method). Data were collected prospectively on patient demographics, intraoperative parameters, pathologic staging, and postoperative outcomes. RESULTS: The mean patient age was 63.7 years. The mean body mass index was 22.6 kg/m2. No patients had a history of previous abdominal surgery. The mean operative time was 379.1 minutes, including 32.6 minutes for pelvic lymph node dissection, 185.2 minutes for RLRC, and 159.4 minutes for urinary diversion. The mean estimated blood loss was 210.5 ml. The mean hospital stay was 20.7 days and the mean time to oral intake and ambulation was 5.0 and 1.3 days, respectively. There were no major perioperative complications. The pathologic reports showed urothelial cell carcinomas in all cases. CONCLUSIONS: Our initial clinical experiences indicate that RLRC with pelvic lymph node dissection and extracorporeal urinary diversion is a safe and feasible procedure with minimal blood loss and rapid recovery. Long-term follow up in a larger patient population is needed to determine the true oncological and functional benefit of this procedure.
Body Mass Index
;
Cystectomy
;
Demography
;
Humans
;
Length of Stay
;
Lymph Node Excision
;
Operative Time
;
Prospective Studies
;
Robotics
;
Urinary Bladder Neoplasms
;
Urinary Diversion
;
Walking
4.Visible Angle on Magnetic Resonance Imaging Can Be Considered Indicator of Postoperative Outcome in Retropubic Radical Prostatectomy.
Se Yun KWON ; Jun Nyung LEE ; Yun Sok HA ; Seock Hwan CHOI ; Hyun Tae KIM ; Tae Hwan KIM ; Tae Gyun KWON
Korean Journal of Urological Oncology 2017;15(1):38-43
PURPOSE: We aimed to measure the visible angle (VA) outside the surgical field of view using preoperative magnetic resonance imaging (MRI), and to relate structural data to clinical outcome. MATERIALS AND METHODS: We retrospectively analyzed data obtained from 322 consecutive patients who underwent robot-assisted laparoscopic radical prostatectomy (RALP) or radical retropubic prostatectomy (RRP) for prostate cancer from January 2011 to June 2013, with at least 1 year of follow-up. Patients were divided into 4 groups, according to median VA values and surgical approach. VA was defined as the angle between the horizontal line on view, rotated to 90∘ from the midsagittal T2-weighted sequence image, and the tangent line of the highest protruding surface of the symphysis pubis. RESULTS: The larger VA was, the shorter mean operative time (213.2 minutes vs. 174.2 minutes, p=0.002) was significantly and the smaller VA was, the higher complication rate (10.8% vs. 1.6%, p=0.043) was in RRP patients. There were no significant differences in operative outcomes in RALP patients. CONCLUSIONS: VA in midsagittal T2-weighted sequence predict operative time and complication rates in retropubic radical prostatectomy, and thus, the value may be used as surgical indications for retropubic radical prostatectomy.
Follow-Up Studies
;
Humans
;
Magnetic Resonance Imaging*
;
Operative Time
;
Prostatectomy*
;
Prostatic Neoplasms
;
Pubic Bone
;
Retrospective Studies
5.Clinical Significance of the Resistive Index of Prostatic Blood Flow According to Prostate Size in Benign Prostatic Hyperplasia.
Se Yun KWON ; Jung Woo RYU ; Dai Hai CHOI ; Kyung Seop LEE
International Neurourology Journal 2016;20(1):75-80
PURPOSE: The authors evaluated the relationships between the clinical factors and resistive indexes (RIs) of prostate and urethral blood flows by using power Doppler transrectal ultrasonography (PDUS) in men with benign prostatic hyperplasia (BPH). METHODS: The data of 110 patients with BPH and lower urinary tract symptoms (LUTS) treated between January 2015 and July 2015 were prospectively collected. PDUS was used to identify the capsular and urethral arteries of the prostate in order to measure RIs. International Prostate Symptom Score (IPSS), maximal flow rate (Qmax), total prostate volume (TPV), transition zone volume (TZV), transition zone index (=TZV/TPV), presence of intravesical prostatic protrusion (IPP), and the RIs of capsular and urethral arteries were evaluated for all of the patients by one urologist. RESULTS: The 110 patients were categorized according to IPSS (mild symptoms, 0-7; moderate symptoms, 8-19; and severe symptoms, 20-35), Qmax (<10 and ≥10 mL/sec), TPV (<30 and ≥30 mL), and presence or absence of IPP. No significant relationship was found between the mean RI of any artery and IPSS or Qmax. The mean RIs of the urethral artery, and left and right capsular arteries were significantly dependent on prostate size and the presence of IPP. CONCLUSIONS: RI obtained by using PDUS correlated with the presence of IPP and prostate size. The RI of prostate blood flow can be used as a noninvasive diagnostic tool for BPH with LUTS.
Arteries
;
Humans
;
Lower Urinary Tract Symptoms
;
Male
;
Prospective Studies
;
Prostate*
;
Prostatic Hyperplasia*
;
Ultrasonography
6.Clinical Characteristics of Neonatal Status Epilepticus.
Kyeong Hun JUNG ; Yun Hee KIM ; Young Se KWON ; Yong Hoon JUN ; Soon Ki KIM ; Byong Kwan SON
Korean Journal of Pediatrics 2005;48(12):1342-1347
PURPOSE: Among perinatal risk factors, neonatal seizures are one of the strongest independent discriminators of adverse outcome, representing high risks of mortality and neurologic morbidity. This study was undertaken to evaluate the neurologic outcome of neonatal status epilepticus according to underlying etiology, seizure pattern, onset time, and duration. METHODS: We reviewed retrospectively 36 neonates (19 males, 17 females) with status epilepticus who were admitted to the neonatal intensive care unit, Inha Hospital between July, 1988 and June, 2003. They were evaluated with neurologic examination, laboratory data, EEG findings, and neuroimaging studies etc. RESULTS: The mean gestational period of the patients was 37.0+/-3.6 weeks and birth weight was 2.70+/-0.82 kilogram. Fifty two point eight percent of the neonates were male and 66.7 percent were born at term. The most common cause of neonatal status epilepticus was hypoxic-ischemic encephalopathy. In preterm babies, intracranial hemorrhages showed an especially high frequency (P=0.034). Gestational age and birth weight did not show a correlation with neurologic complications. The incidence of neurological sequelae were significantly related to prolonged seizures lasting more than 1 hour (P=0.002). Neonates with seizures within the first 72 hours tended to be more frequent among those who developed adverse outcomes (P=0.016). Generalized tonic seizures had the worst prognosis, whereas those children who had subtle seizures had better outcomes than any other type (P< 0.05). Generalized tonic seizures were primarily represented on EEG by abnormal background, whereas subtle seizure showed a significantly more normal EEG than any other seizures (P< 0.05). CONCLUSION: Our results indicate that neonatal status epilepticus with early onsets, prolonged durations. And generalized tonic types can predict an increased risk for neurologic sequelae. So, those seizures must be perceived as medical emergencies and treated aggressively with antiepileptic drugs.
Child
;
Male
;
Female
;
Infant, Newborn
;
Humans
;
Incidence
;
Mortality
;
Risk Factors
7.Extra-gastrointestinal Stromal Tumor on the Inner Urinary Bladder Wall.
Jun Nyung LEE ; Se Yun KWON ; Jeongshik KIM ; Ghil Suk YOON ; Eun Sang YOO ; Hyun Tae KIM
Korean Journal of Urological Oncology 2016;14(1):43-46
A gastrointestinal stromal tumor is the most common mesenchymal tumor of the gastrointestinal tract, and is diagnosed on the basis of the combined expression of CD34 and CD117 (C-kit protein). An extragastrointestinal stromal tumor of the urinary bladder is a very rare neoplasm. In this report, we describe a case of an extragastrointestinal stromal tumor originating from the inner surface of the urinary bladder. A 46-year-old man presented with an incident bladder mass, and he was diagnosed with an extragastrointestinal stromal tumor after transurethral resection of the bladder tumor. A tumor on the inner urinary bladder wall is an unusual presentation of an extragastrointestinal stromal tumor. The patient is doing well with no recurrence at 18 months after surgery.
Gastrointestinal Stromal Tumors
;
Gastrointestinal Tract
;
Humans
;
Middle Aged
;
Recurrence
;
Urinary Bladder Neoplasms
;
Urinary Bladder*
8.A Case of Alobar Holoprosencephaly with Cyclopia and Proboscis in Prematurity.
Seok Woo PARK ; Yun Hee KIM ; Tae Jeoung SUNG ; Young Se KWON ; Yong Hoon JUN ; Lucia KIM
Journal of the Korean Society of Neonatology 2004;11(2):247-251
Holoprosencephaly is a developmental malformation complex of forebrain and midface which arises from incomplete cleavage of the embryonic forebrain. It is subdivided into alobar, semilobar and lobar types based on the degree of growth disturbance within the anterior wall of the telencephalon, particularly in the midline. Cyclopia is the most severe form of alobar holoprosencephaly presenting a single median eye and a blind-ending proboscis usually located above the eye. We report a case of alobar holoprosencephaly with cyclopia and proboscis in premature infant.
Holoprosencephaly*
;
Humans
;
Infant, Newborn
;
Infant, Premature
;
Prosencephalon
;
Telencephalon
9.Anatomical Correlates of the "Closing-In" Phenomenon.
Se Yoon KWON ; Eek Sung LEE ; Yun Jeong HONG ; Sung Chul LIM ; Kook Jin AHN ; Bora YOON ; Yongsoo SHIM ; Dong Won YANG
Dementia and Neurocognitive Disorders 2015;14(1):17-23
BACKGROUND AND PURPOSE: The "closing-in" phenomenon refers to the tendency to copy near or overlap a model while performing figure-copying tasks. The mechanisms underlying the closing-in phenomenon have not been fully elucidated, and previous studies only investigated the mechanisms through neuropsychological tests. We investigated the neuroanatomical correlates of the closing-in phenomenon using voxel-based morphometry (VBM). METHODS: Thirty-eight patients diagnosed with probable Alzheimer's disease (AD) and 21 normal controls were included. All subjects underwent neuropsychological testing to diagnose dementia and magnetization prepared rapid acquisition gradient echo brain magnetic resonance imaging for the voxel-based statistical analysis. The subjects were asked to copy the modified Luria's alternating squares and triangles to quantify the closing-in phenomenon. We applied SPM8 for the VBM analysis to detect gray matter loss associated with the closing-in phenomenon. RESULTS: The patients with probable AD showed a higher closing-in score than that of the normal control subjects (p<0.0001). The VBM analysis revealed more parietal and temporal atrophy in the patients with AD than that in the normal control group. Moreover, atrophy of the orbito-frontal area was associated with the closing-in phenomenon. CONCLUSIONS: The closing-in phenomenon is dysfunction while performing figure-copying tasks and is more common in patients with AD. The analysis of the orbito-frontal area, which is associated with inhibiting primitive reflexes, revealed that the closing-in phenomenon is an imitation behavior commonly observed in patients with frontal lobe damage.
Alzheimer Disease
;
Atrophy
;
Brain
;
Dementia
;
Frontal Lobe
;
Humans
;
Magnetic Resonance Imaging
;
Neuropsychological Tests
;
Rabeprazole
;
Reflex
10.Clinical features of children's brain tumors according to location.
Seung Jeong HAN ; Yun Hee KIM ; Young Se KWON ; Yong Hoon JUN ; Soon Ki KIM ; Byong Kwan SON
Korean Journal of Pediatrics 2006;49(1):76-81
PURPOSE: This study evaluated the clinical characteristics of brain tumors in children according to their location, the parental delay and the doctor's delay between the onset of symptoms and the diagnosis of a pediatric brain tumor. In addition, this study compared the relationship between the pre-diagnostic symptomatic interval and the tumor location. METHODS: A retrospective study was undertaken of 45 children with primary brain tumors admitted to Inha Hospital from July, 1986 to June, 2004. A diagnosis of the tumor location was made using brain MRI. RESULTS: The male to female ratio was 1:0.67. The median age at diagnosis was 6.0 years in supratentorial tumors, 7.0 years in infratentorial tumors. Twenty four cases(53.3 percent) were located in the supratentorial area, 21 cases(46.6 percent) were located in the infratentorial area. The distribution of supratentorial tumors were 14(58.3 percent) in the cerebral hemisphere and temporal lobe, seven (29.1 percent) in the suprasellar area, and three(12.5 percent) in the pineal gland and posterial lateral ventricle. The distributions of the infratentorial tumors were 12(57.1 percent) in the cerebellar vermis and fourth ventricle, four(19.1 percent) in the brain stem, and five(23.8 percent) in the cerebellar hemisphere. The most common initial symptom was seizure(37.5 percent) in the supratentorial tumor and headache(38.0 percent) in infratentorial tumors. The median pre-diagnostic symptomatic interval (PSI) was 21 days(range 0-240 days). The median PSI with a parental delay in supratentorial tumor was six days(range 1-240 days), and 30 days(range 1-40 days) in the infratentorial tumor. We immediately diagnosed most cases after visiting the hospital. There was no significant relationship between the tumor location and the pre-diagnostic symptomatic interval. CONCLUSION: The most common symptom of supratentorial tumors and infratentorial tumors was seizure and headache, respectively. Although, the median pre-diagnostic symptomatic interval was shorter than in previous studies, a detailed medical history and a correctly interpreted neurological examination should lead to an earlier diagnosis of pediatric brain tumors.
Brain Neoplasms*
;
Brain Stem
;
Brain*
;
Cerebrum
;
Child
;
Diagnosis
;
Female
;
Fourth Ventricle
;
Headache
;
Humans
;
Infratentorial Neoplasms
;
Lateral Ventricles
;
Magnetic Resonance Imaging
;
Male
;
Neurologic Examination
;
Parents
;
Pineal Gland
;
Retrospective Studies
;
Seizures
;
Supratentorial Neoplasms
;
Temporal Lobe