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Localized telogen effluvium following hair transplantation
( Seung Hee Loh ),( Dong Woo Suh ),( Bark Lynn Lew ),( Woo Young Sim ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Telogen effluvium is a form of nonscarring alopecia, characterized by diffuse scalp hair thinning and shedding in response to triggering events such as physiologic stress and several illnesses. Case 1; A 51-year-old female patient visited our department with a 3-week history of frontal and bitemporal shedding and thinning. She underwent hair transplantation of 2,000 hair follicles into her frontal scalp 1 month before the abrupt hair loss. The patient was otherwise healthy and taking no medications. Case 2; A 40-year-old healthy male patient complained of a 2-week history of frontal and bitemporal shedding. He had a surgical history of hair transplantation 3 weeks before his hair loss. Physical examination of the both patients revealed some diffuse hair loss, especially in the frontal and temporal area. Normal follicular density and increased numbers of telogen hair follicles were observed on their temporal scalp biopsy specimen. Moreover, there was no perifollicular inflammatory cell infiltration. These histopathological characteristics were consistent with telogen effluvium. Both of them were reassured and placed on close follow-up without any treatment. We report 2 cases of localized telogen effluvium following hair transplantation. Dermatologic surgeons have to know and explain to patients that localized telogen effluvium can be the cause of temporary hair loss after hair transplantation and spontaneous recovery.
P201 : Pressure alopecia: clinical presentation and prognosis
( Seung Hee Loh ),( Jung Hee Kim ),( Yoo Jin Oh ),( Bark Lynn Lew ),( Woo Young Sim ) 대한피부과학회 2013 대한피부과학회 학술발표대회집 Vol.65 No.2
Background: Pressure alopecia (PA) is a group of scarring and non-scarring alopecia that occurs following prolonged immobile state of the scalp. PA is mostly observed after a surgical procedure under general anesthesia or a prolonged period of lying in an ICU. It is a rare condition but preventable. Objectives: To describe the clinical manifestations and course of PA and to assess the prognostic factor for permanent scarring alopecia Methods: 27 patients referred to the dermatology department of Kyunghee University Hospital at Gangdong during a 8-year period were included. Results: 18 patients (66.7%) had undergone operation and 9 had a history of immobilizing illness. The mean duration from the time of pressure to onset of alopecia was 3.62 weeks (3.28 and 4.33 weeks in patients with and without operation respectively). 22 patients (81.8%) experienced a complete recovery, whereas 5 patients developed to a permanent scarring alopecia. All patients with permanent alopecia had a pressure on scalp from operative treatment. The mean operation time was 4.5 hours in patients with temporary alopecia and 8.4 hours in those with permanent alopecia (p= 0.037). Conclusion: These results showed PA could progress a permanent alopecia and suggested the most significant factor in prognosis might be operation time. Therefore shortening of the operation time, rather than shortening the time of bed rest, would prevent progression of permanent alopecia.
Localized Telogen Effluvium Following Hair Transplantation
( Seung-hee Loh ),( Bark-lynn Lew ),( Woo-young Sim ) 대한피부과학회 2018 Annals of Dermatology Vol.30 No.2
Telogen effluvium is categorized in nonscarring alopecia, which shows scalp hair thinning and shedding diffusely resulting from inducing factors such as physiological stressful events and several acute or chronic diseases. It usually appears in female patients following parturition, as well as after febrile disease, major surgery, emotional stress, abrupt diet, chronic illness, or the taking of certain medication pills. Two patients who both recalled an operational history of hair transplantation visited our department with their frontal and both temporal hair loss. Physical examination of the both patients showed localized but diffuse hair loss, especially in the frontal and temporal scalp. Histopathological examination of biopsy specimen taken from their temporal scalp revealed normal follicular density and increased numbers of telogen hair follicles without any inflammatory cell infiltration around follicles. These clinical and histopathological findings were consistent with telogen effluvium. Both of them were reassured and placed on close follow-up without any treatment. From these cases, we demonstrate that localized telogen effluvium could be a cause of hair loss after hair transplantation. (Ann Dermatol 30(2) 214∼217, 2018)
Deep Cystic Lymphangioma on the Chest Wall in an Adult
( Seung-hee Loh ),( Bark-lynn Lew ),( Woo-young Sim ) 대한피부과학회 2017 大韓皮膚科學會誌 Vol.55 No.7
Cystic lymphangioma is a true, benign, congenital multicystic tumor arising from sequestrations of embryonic lymphatic tissue. Most often it occurs at birth or during the early years of life, is found most commonly in the neck, and its distribution coincides with that of the primitive lymph sacs. A 23-year-woman presented with a soft palpable mass on her chest wall. Physical and ultrasound examination revealed a well-circumscribed, mobile, nontender, soft subcutaneous mass on the right posterior chest wall beneath the latissimus dorsi muscle. A skin biopsy of the mass showed endothelium-lined lymphatic vessels and a loose, lace-like fibrous tissue stroma. The specimen was stained with D2-40 showing positive staining of lymphatics. These histopathological findings confirmed the diagnosis of a cystic lymphangioma. We report a rare case of a cystic lymphangioma on the chest wall in a 23-year-old woman. (Korean J Dermatol 2017;55(7):457∼459)
The efficacy of finasteride in women patients with female pattern hair loss: a meta-analysis
( Seung-hee Loh ),( Yong-yon Won ),( Bark-lynn Lew ),( Woo-young Sim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.2
Background: Female pattern hair loss (FPHL) is the most common form of hair loss in women. Various treatments have been attempt for FPHL including topical minoxidil and finasteride. The efficacy of oral finasteride in FPHL is still controversial. Objectives: We analyzed a meta-analysis to clarify whether finasteride is efficient in women patients with FPHL. Methods: Pertinent studies were identified by searching of PubMed. The random effective model was used to combine the results. This study sought to evaluate the efficacy of finasteride using outcomes global photographic assessment using Ludwig scale and hair density. Nine articles involving a total of 220 patients were included in this network meta-analysis. Results: Pooled data demonstrated a significantly increase in hair density compared with before and after treatments [95% confidence internal (CI) = -1.176 to -0.761, p<0.005]. There was no significant difference in global photographic assessment using Ludwig scale (95% CI: 0.133-2.354, P=0.028), however, there was still improved propensity. We also analyzed a regression test to evaluate the association between efficacy of finasteride and age of patients, concentration taken (1, 1.25, 2.5, 5mg/day) and treatment duration (3.5 to 30 months). But there were no statistically significant differences. Conclusion: This meta-analysis suggests that finasteride is effective for promoting hair density in women patient with FPHL. But as limitations, high heterogeneity was shown in most studies.