1.Development of a device constantly stimulating tuning fork and variability of its vibration perception time.
Jong Young LEE ; Dae Yong HONG ; Hyeong Ryeol YOON
Korean Journal of Preventive Medicine 1991;24(1):93-97
No abstract available.
Vibration*
2.A Case of Malignant Melanoma with Multiple Myeloma.
Heung Ryeol CHOI ; Yoon Whoa CHO ; Sang Jang LEE ; Byung In RO ; Seong Hong KIM
Annals of Dermatology 1993;5(2):133-136
Malignant melanoma is an uncommon tumor in Korea. To the best of our knowledge, we could not find malignant melanoma with multiple myeloma in Korean literature. A 57-year-old male patient had a 4×5 cm sized, irregular bordered, dark brownish plaque on the left sole, which has extended gradually since about 1 year ago and showed an occasional bleeding tendency. Laboratory examinations revealed a low hemoglobin level, rouleaux formation on peripheral blood, monoclonal gammopathy of IgG-kappa type and Bence-Jones proteinuria. Bone marrow aspiration findings showed markedly increased immature plasma cells suggesting multiple myeloma. Histopathologic findings of the skin biopsy from the left sole revealed proliferation of atypical melanocytes. We performed a surgical excision with a skin graft for malignant melanoma and chemotherapy (melphalan, vincristine and prednisolone) for multiple myeloma.
Biopsy
;
Bone Marrow
;
Drug Therapy
;
Hemorrhage
;
Humans
;
Korea
;
Male
;
Melanocytes
;
Melanoma*
;
Middle Aged
;
Multiple Myeloma*
;
Paraproteinemias
;
Plasma Cells
;
Proteinuria
;
Skin
;
Transplants
;
Vincristine
3.Clinical trial of chelating agents administration on subelinical lead poisoning workers.
Kap Yull JUNG ; Won Sul KIM ; Haeng Ryeol LEE ; Dong Il KIM ; Young Seoub HONG ; Joon Youn KIM
Korean Journal of Occupational and Environmental Medicine 1993;5(2):223-232
No abstract available.
Chelating Agents*
;
Lead Poisoning*
4.A survey on the factors associated with low back pain in rural women.
Jung Rak KIM ; Myeong Ryeol YOON ; Dae Yong HONG ; Han Woo LEE ; Sung Hak PARK ; Jong Young LEE ; Moo Sik LEE
Korean Journal of Epidemiology 1991;13(2):185-196
No abstract available.
Female
;
Humans
;
Low Back Pain*
5.Discrepancies in Perception of Urinary Incontinence between Patient and Physician after Robotic Radical Prostatectomy.
Seung Ryeol LEE ; Hong Wook KIM ; Jae Won LEE ; Woo Ju JEONG ; Koon Ho RHA ; Jang Hwan KIM
Yonsei Medical Journal 2010;51(6):883-887
PURPOSE: Reported incidence of urinary incontinence after a radical prostatectomy (RP) varies between studies. This may be due not only to the definition of incontinence applied, but also how the information is acquired. We investigated the differences in perception of post robot-assisted laparoscopic RP (RALP) urinary incontinence acquired through doctor interviews and patient-reported questionnaires. MATERIALS AND METHODS: Of 238 consecutive men who underwent RALP by a single surgeon between July 2005 and February 2008, we evaluated 66 men using the International Consultation on Incontinence Questionnaire (ICIQ) at various time points after surgery. Each patient's ICIQ results were considered to be the patient's perceptions of urinary incontinence. The physician at the same time directly interviewed the patients about the number of pads used and considered complete continence to be equivalent to the use of no pads or safety liners. RESULTS: Of the 66 patients, the physician reported that 34 (51.5%) had obtained complete continence. However, analysis of the questionnaires of these 34 patients revealed that only 5 (14.7%) patients reported that they never leaked during the past 4 weeks. Most patients (11 patients, 32.4%) who did not use any pad did in fact reported leakage of a small or moderate amount of urine about once a day. CONCLUSION: Our results indicate that there are discrepancies in the perception of urinary incontinence between doctor and patient after RALP. Non-use of pads is not equivalent to obtaining complete urinary continence. Therefore, the number of pads used is not a good measure to determine the status of complete urinary continence.
Aged
;
Aged, 80 and over
;
Biopsy
;
Humans
;
Laparoscopy/methods
;
Male
;
Middle Aged
;
Perception
;
Physician-Patient Relations
;
Prostatectomy/*adverse effects/methods
;
Questionnaires
;
Robotics
;
Treatment Outcome
;
Urinary Incontinence/*etiology
6.Obliteration of the Temporal Dorsal Bullae of Guinea Pigs Using Hydroxyapatite Granules (Bongros(R)): A Radiological and Histological Study.
Hyun Seok LEE ; Yang Sun CHO ; Won Ho CHUNG ; Seung Ryeol LEE ; Juyong CHUNG ; Sung Hwa HONG
Korean Journal of Otolaryngology - Head and Neck Surgery 2009;52(1):14-18
BACKGROUND AND OBJECTIVES: The present study reports radiological and histological observations of temporal dorsal bullae obliterated by implantation of hydroxyapatite granules (Bongros(R)). MATERIALS AND METHOD: The guinea pigs underwent obliteration of the left dorsal temporal bullae with hydroxyapatite granules (Bongros(R)). MicroCT images were obtained preoperatively and postoperatively. All animals were killed 3 months later. In 8 animals, light microscopic examination of bullae were conducted, and in 4 animals, morphological changes in the cochlear hair cells were examined by scanning electron microscopy (SEM). RESULTS: The microCT images obtained at 3 months after operation demonstrated high signal intensity areas suggesting new bone formations at implanted sites. Light microscopic examinations showed new bone ingrowth and good osteointegration, but no inflammatory response or foreign-body reaction. SEM showed normal-looking hair cells on all examined animals' specimen. CONCLUSION: Our results suggest that Bongros(R) may be safe and reliable alloplastic materials for mastoid obliteration. (Korean
Animals
;
Blister
;
Bone Transplantation
;
Cholesteatoma
;
Durapatite
;
Foreign-Body Reaction
;
Guinea
;
Guinea Pigs
;
Hair
;
Light
;
Mastoid
;
Microscopy, Electron, Scanning
;
X-Ray Microtomography
7.Mutagenic Assessment of Olmesartan Cilexetil by Bacterial Mutation Assay.
Ji Won KIM ; Ilyoung AHN ; Sung Ha RYU ; Hong Ryeol JEON ; Bong Sang LEE ; Kyu Bong KIM
Toxicological Research 2013;29(3):217-219
Hypertension is a serious health problem due to high frequency and concomitant other diseases including cardiovascular and renal dysfunction. Olmesartan cilexetil is a new antihypertensive drug associated with angiotensin II receptor antagonist. This study was conducted to evaluate the mutagenicity of olmesartan cilexetil by bacterial reverse mutation test using Salmonella typhimurium (TA100, TA1535, TA98, and TA1537) and Escherichia coli (WP2 uvrA). At the concentrations of 0, 62, 185, 556, 1667, and 5000 microg/plate, olmesartan cilexetil was negative in both Salmonella typhimurium and Escherichia coli regardless of presence or absence of metabolic activation system (S9 mix). These results demonstrate that olmesartan cilexetil does not induce bacterial reverse mutation.
Biotransformation
;
Escherichia coli
;
Hypertension
;
Imidazoles
;
Receptors, Angiotensin
;
Salmonella typhimurium
;
Tetrazoles
8.Immunoglobulin G4-Related Inflammatory Pseudotumor Presenting as a Solitary Mass in the Stomach.
Hong Ryeol CHEONG ; Bong Eun LEE ; Geun Am SONG ; Gwang Ha KIM ; Sung Gyu AN ; Won LIM
Clinical Endoscopy 2016;49(2):197-201
Immunoglobulin G4 (IgG4)-related disease (IgG4RD) is a relatively recently recognized entity that is histopathologically characterized by an extensive infiltration of lymphocytes and IgG4-positive plasma cells with dense fibrosis. IgG4RD is now known to affect any organ system, and a few cases of gastrointestinal lesions have also been reported. However, solitary IgG4RD of the stomach is still very rare. Furthermore, as it can mimic malignant conditions, it is important to recognize this disease to avoid unnecessary surgery. Herein, we present a case of IgG4RD presenting as an isolated subepithelial mass in the stomach.
Fibrosis
;
Granuloma, Plasma Cell*
;
Immunoglobulins*
;
Lymphocytes
;
Plasma Cells
;
Stomach*
;
Unnecessary Procedures
9.Ovarian tissue cryopreservation and transplantation for fertility preservation
Yeon Hee HONG ; Jung Ryeol LEE
Journal of the Korean Medical Association 2022;65(6):345-352
As the number of cancer survivors has increased with advancements in cancer treatment, fertility preservation has become a treatment goal. Ovarian tissue cryopreservation (OTC) and transplantation (OTT) has made great progress over the past few decades. It has become the treatment of choice for fertility preservation in adolescents or patients in urgent need of chemotherapy. However, it is considered to be experimental compared with oocyte or embryo cryopreservation in some countries. Nevertheless, OTC and OTT is regarded as the more ideal method for fertility preservation in that it can also restore hormonal functions.Current Concepts: Currently, over 200 live births have been reported worldwide after OTC and OTT, proving the excellence of the technology. However, before its application in clinical settings, some challenges, including cryoinjury, ischemic injury, and cancer cell reimplantation, should be overcome. For cryoinjury, studies are underway on protocol improvement with the addition of agents such as antifreeze protein during cryopreservation. For ischemic injury, various agents have been studied to promote angiogenesis or revascularization. Furthermore, studies are underway on artificial ovary or xenotransplantation for fertility preservation in an effort to avoid cancer cell metastasis.Discussion and Conclusion: OTC and OTT is a clinically applicable option for fertility preservation. To set OTC and OTT as an established method for fertility preservation, further research is necessary to overcome the current challenges.
10.A Successful Live Birth From a Vitrified Oocyte for Fertility Preservation of a Patient With Borderline Ovarian Tumor Undergoing Bilateral Ovarian Surgery: A Case Report
Yae Ji CHOI ; Yeon Hee HONG ; Haerin PAIK ; Seul Ki KIM ; Jung Ryeol LEE ; Chang Suk SUH
Journal of Korean Medical Science 2024;39(1):e14-
This article reports the live birth of a healthy newborn using vitrified-warmed oocytes from fertility preservation before ovarian surgery. The patient in our case underwent two cycles of controlled ovarian stimulation before laparoscopic bilateral ovarian cystectomy for endometriosis, and a total of 23 mature oocytes were vitrified. After surgery, her pathologic reports revealed a serous borderline tumor and endometrioma. Fifteen months after her second surgery of laparoscopic right salpingo-oophorectomy and left ovarian cystectomy owing to recurrence, she had been married by then, and three of the frozen oocytes were thawed for intracytoplasmic sperm injection. These oocytes were cryopreserved for 2.5 years. All three were fertilized, and two grade-A cleavage-stage embryos were transferred.A singleton pregnancy was achieved, resulting in the delivery of a healthy baby boy at 39.3 weeks of gestation. Oocyte cryopreservation is an effective method for fertility preservation prior to ovarian surgery when ovarian function decline is predictable.