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윤춘식 ( Choon Shik Youn ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.2
Filler products - recently too many filler products. <Guideline for filler choice> 1. Hyaluronic acid vs Nonhyaluronic acid - Hyaluronic acid filler preferred : Previously, we thought that nonhyaluronic acid filler duration is much longer than hyaluronic acid filler But, nowadays, hyaluronic acid filler 1) Same or longer duration than nonhyaluronic acid filler 2) Easily remove 3) Other effects: skin rejuvenation 2. Biphasic vs Monophasic hyaluronic acid 1) Biphasic hyaluronic acid filler : high elasticity and viscosity - high tension area (nose, nasolabial fold, chin, cheek) 2) Monophasic hyaluronic acid filler : low elasticity and viscosity - low tension area (forehead, tear trough, perioral area) 3. Hyaluronic acid concentration - concentration correlates with volume- 4. Particle size - particle size correlates with volume- 5. Swelling & final volume - After hyaluronic acid filler injection, volume change 6. Hyaluronic acid filler products grade
Trichophyton verrucosum에 의한 두부독창 2예
윤춘식,문승현,김정애,김규한,조광현,강성하 대한의진균학회 2000 대한의진균학회지 Vol.5 No.2
In Korea, kerion celsi caused by Trichophyton(T.) verrucosum was first reported in the Honam area in 1986. Since then, more cases have been reported in the Youngnam and Chungcheong areas but there has been no report in Seoul and Kyonggido until now. Recently, two patients with kerion celsi visited Seoul National University Hospital and T. verrucosum was isolated from the scalp lesions of these patients. Case 1 was a 52 year-old female living in Kapyoung, Kyonggido and she showed l0×10 cm and 5×3 cm sized, indurated alopecic masses on the scalp which were developed 2 months ago. Case 2 was a 50 year-old female living in Youngju, Kyongsangbukdo and a 10×7 cm sized, purulent alopecic plaque was developed on the scalp 1 month ago. They were farmers raising cows with gray or whitish plaques on their skins. These patients were successfully treated with terbinafine 250 mg per day for 7 weeks and 8 weeks, respectively. We report these cases to call more attention to detect this species even in urban areas such as in Seoul. Therapeutic effect of terbinafine on kerion celsi has not been reported in Korea so far and our cases demonstrated the excellent therapeutic effect of terbinafine on kerion celsi cause by T. verrucosum. [Kor J Med Mycol 5(2): 60-65]
Treatments of Infra-Orbital Dark Circles by Various Etiologies
( Kui Young Park ),( Hyun Jung Kwon ),( Choon Shik Youn ),( Seong Jun Seo ),( Myeong Nam Kim ) 대한피부과학회 2018 Annals of Dermatology Vol.30 No.5
Dark circles refer to visible darkness of the infra-orbital areas. Dark circles are a cosmetic concern for many individuals, although not a medical concern. Moreover, clear definitions and possible causes of dark circles have not been elucidated. This study reviews the possible causes and treatment options for dark circles based on a review of the medical literature and the authors’ clinical experience. Potential factors that contribute to dark circles include excessive pigmentation, shadowing due to tear troughs and infra-orbital fat herniation, shadowing due to infraorbital laxity and wrinkles, and thin, translucent skin overlying the orbicularis oculi muscle. Given the different possible causes for dark circles, therapeutic modalities must be individualized for each patient. Because various factors cause dark circles, it is useful to identify the underlying causes in order to select the appropriate treatment. (Ann Dermatol 30(5) 522∼528, 2018)
Intradermal Injection of Botulinum Toxin: A Safer Treatment Modality for Forehead Wrinkles
( Ji-young Jun ),( Ji-hye Park ),( Choon Shik Youn ),( Jong Hee Lee ) 대한피부과학회 2018 Annals of Dermatology Vol.30 No.4
Intramuscular injection of botulinum toxin A (BTXA) is commonly used for the treatment of forehead wrinkles. In practice, physicians often use an intradermal injection for this purpose, as they feel that there is a lower risk of adverse effects compared with intramuscular injection. However, there are no direct comparative studies between those two injection modalities. We conducted a 24-week long, double- blinded, split-face, pilot study of three participants to compare the efficacy and safety of intradermal or intramuscular injection of BTXA for the treatment of forehead wrinkles. Maximum improvement of wrinkles and the time to achieve maximum effect were similar for both methods. The brow level was lower on the intramuscular injection side throughout the follow-up period for all participants. Subjective satisfaction with wrinkles was similar on both sides, but patients felt more heaviness of the eyebrow on the intramuscular side. No serious side effects were noted. In conclusion, the anti-wrinkle effect of BTXA was not significantly different between intramuscular and intradermal injections. However, side effects such as eyebrow ptosis, and heaviness were more prominent after intramuscular injection. (Ann Dermatol 30(4) 458∼461, 2018)
( Hei Sung Kim ),( Hyree Kim ),( Je Young Park ),( Choon Shik Youn ),( Soo Keun Lee ),( Nark Kyoung Rho ) 대한피부과학회 2014 대한피부과학회 학술발표대회집 Vol.66 No.2
Background: The nose is the most prominent feature of the face being located in the center. Nose augmentation, either through surgery or filler injection is a popular procedure in East Asian countries but the assessment of its outcome remains highly subjective. 3D imaging has been developed to enable more precise evaluation of the changes of the nose after rhinoplasty. Objectives: In this study, we have used a 3D imaging system (Morpheus 3D scanner) to identify the anthropometric changes of the face following filler rhinoplasty. Methods: A total of 40 patients who underwent filler rhinoplasty (20 patients with a cannula and 20 patients with needle) were included in the study. 3D images were obtained before, immediately after, 1 day after and 2 weeks after the procedure and superimposed using the common facial landmarks. Results: The volume increase of the nose at 2 weeks was 3.12 ml per 1ml of filler injected. The change in sellion depth was 3.65 mm per ml of filler material. There were also significant changes in the nasofrontal, nasofacial, nasolabial and the nasomental angles following filler rhinoplasty. Differences in the measurements between the cannula and the needle group were also identified. Conclusion: Based on the results of our study, we suggest the 3D imaging system to be a reliable and promising tool for quantifying the changes in soft tissue dimension of the face.