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( Chan-bin Park ),( Jong-kyung Lee ),( Seol Park ),( Ji-won Park ) 대한물리치료학회 2023 대한물리치료학회지 Vol.35 No.6
Purpose: This study aimed to compare the lasting effects of the flossing band technique, dynamic and static stretching on hamstring on range of motion (ROM), muscle activity, and proprioception to identify the most effective pre-exercise method for preventing injuries. Methods: Thirty participants were randomly assigned to the flossing band (FB), dynamic stretching (DS), and static stretching (SS) groups, with 10 subjects in each. Measurements included muscle activity of the biceps femoris vis surface electromyography, knee ROM and proprioception during active knee extension and flexion using a smart joint goniometer. Assessments were conducted before, immediately after, 15, and 30 minutes after each intervention. Results: Proprioception showed no significant differences among groups at any time point. Significant differences in knee ROM were observed in the FB group (except between 15 and 30 minutes after), DS group (except between immediately after and 15 minutes after, and between 15 and 30 minutes after), and SS group (except between before and 15 minutes after, and between before and 30 minutes after). Muscle activity in the FB (except between before and 30 minutes after, and between 15 and 30 minutes after) and SS (between before and immediately after, between immediately after and 30 minutes after, and between 15 and 30 minutes after) groups showed significant differences, while the DS group exhibited no significant changes. Conclusion: Although direct comparisons did not establish superiority, within-group analyses indicated that the flossing band technique exhibited longer-lasting effects than dynamic and static stretching, providing valuable insights for injury prevention program design.
( Seol Hwa Seong ),( Do Ik Kwon ),( Ji Yun Jang ),( Jong Bin Park ),( Kee Suck Suh ),( Min Soo Jang ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.2
Background: Mycosis fungoides (MF) is the most common form of cutaneous T-cell lymphoma with a variety of clinicopathological features. A single center-based large scale study with long-term follow up in Korea has not been reported. Objectives: To investigate epidemiologic features and clinical outcomes of MF patients at the authors’ hospital over a 27-year period. Methods: This is a pilot study conducted on 151 patients diagnosed as MF, from 1991 to 2018, with the retrospective review. Results: Of 151 patients, 62.9% were male and 37.1% female. The mean age at the diagnosis was 44.2 years (range, 5-82). The mean duration of symptoms was 50.4 months (range, 0.25-360). The mean follow-up duration was 57.6 months (range, 2-251). Common subtypes were classic MF (45.0%), mycosis fungoides palmaris et plantaris (MFPP) (23.8%), and folliculotropic MF (7.9%). In early-stage MF (IA-IIA) of 143 patients (94.7%), the 10-year overall survival (OS) was 93.6%. In advancedstage MF (IIB-IVB) of eight patients (5.3%), the 10-year OS was 23.4%. Complete remission (CR) and disease progression were found in 63.6% and 4.6% of the patients. The recurrence after CR was observed in 33 patients (21.9%) and the mean recurrence free-duration was 24.1 months (range, 1-118). Conclusion: Clinical outcomes generally paralleled the previous reports with favorable prognosis in the earlystage MF. Recurrence was not uncommon, largely due to greater prevalence of MFPP.
Localized mycosis fungoides that predominantly affects knuckles of hands
( Seol Hwa Seong ),( Jang Hwan Jung ),( Do Ik Kwon ),( Kang Hoon Lee ),( Jong Bin Park ),( Kee Suck Suh ),( Min Soo Jang ) 대한피부과학회 2020 대한피부과학회 학술발표대회집 Vol.72 No.1
Background: Mycosis fungoides palmaris et plantaris (MFPP) is a variant of mycosis fungoides (MF) that localized on the palms and soles, which often spreads to the dorsal aspect of hands, fingers, and feet. However, it is argumentative to classify localized MF that mainly affects knuckles of hands, with or without involvement of palms, as MFFP. Further, it can be overlooked as chronic hand eczema unless a biopsy is performed. Objectives: To investigate the clinicopathologic features of localized MF that mainly affects the dorsal aspect of hands. Methods: This study was conducted on nine patients diagnosed clinicopathologically MF, and who presented discrete eczematous lesions predominantly on the dorsal aspect of hands. Results: The mean age at the diagnosis was 47.6 years (range, 38-59). The mean duration of the disease was 46.7 months (range, 12-120). Knuckles were the most common site of involvement shown in all nine patients, followed by the volar side of fingers shown in six patients. Five patients reported an occupational history with frequent minor injuries on the hands. During 78.5 months of the mean follow-up, none of the patients had progressive disease. While most histopathologic findings were similar to that of classic MF, spongiosis was more pronounced in our patients. Conclusion: We suppose that trauma may play a role in the development of localized MF, and a high index of suspicion is needed for this diagnostic challenge.
Metastatic pancreatic cancer mimicking keratoacanthoma: Dermoscopic features
( Seol Hwa Seong ),( Ji Yun Jang ),( Jong Bin Park ),( Min Soo Jang ),( Kee Suck Suh ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1
Cutaneous metastasis of internal malignancy is a rare phenomenon that accounts for less than 5% of the patients with cancer and can be confused with benign skin disorders. A 47-year-old male suffering from the pancreatic cancer presented with a well-defined, erythematous coin sized solitary tumor with central ulceration on the face, clinically similar to a keratoacanthoma (KA). On dermoscopy, the ulcerated central amorphous area surrounded by white structureless area and white circles on the erythematous to orange colored background were seen. Polymorphous vascular patterns were asymmetrically distributed with densely aligned, linear serpentine vessels, dotted vessels, and arborizing vessels. The hairpin vessel, a well-known dermoscopic feature of KA, was not seen. Histologic findings showed atypical hyperchromatic cells densely involving the dermis and subcutaneous tissue, transepidermal elimination, and uninvolved epidermis separated from underlying tumor cell infiltration by Grenz zone. Moderately differentiated neoplastic glands and tumor cells showing the ‘Indian file’ arrangment were seen. In the immunohistochemical staining, CA19-9, CK19, and CK7 were positive, whereas, CK20 were negative. On the basis of dermoscopic and histologic findings, the diagnosis of metastatic pancreatic cancer was made. Herein, we report a case of metastatic pancreatic cancer mimicking KA for which the dermoscopy was used as a helpful diagnostic tool.
( Seol Hwa Seong ),( Do Ik Kwon ),( Ji Yun Jang ),( Jong Bin Park ),( Kee Suck Suh ),( Min Soo Jang ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.2
Background: Making a clear diagnosis of bowenoid papulosis (BP), seborrheic keratosis (SK) and condyloma acuminatum (CA) in genital area can be difficult. Skin biopsy can be helpful but its invasiveness and low cost-effectiveness provoke to seek other diagnostic methods. Objectives: To investigate distinctive dermoscopic features and human papillomavirus (HPV) related entities that can differentiate BP, SK, and CA. Methods: Dermoscopic patterns and real-time polymerase chain reaction (PCR) to detect HPV were evaluated in 44 biopsy specimens. 10, 13, and 21 specimens of them were histologically confirmed as BP, SK, and CA. Results: The most common site of occurrence was penile shaft in BP, inguinal area in SK and equally penile shaft or inguinal area in CA. Dermoscopic features tend to be different showing structureless pattern (80%) with glomerular vessels (70%) in BP, cobblestone pattern (46%) without specific visible vessels (69%) in SK, and exophytic papillary structures (86%) with high vascularity including hairpin, glomerular, and comma-like vessels (71%, 57%, and 52%, respectively) in CA. Detection rate of HPV in PCR was 90% in BP, 61.5% in SK, and 100% in CA. Commonly found subtype was HPV 16 in BP (46.2%), SK (60.0%), and HPV 6 in CA (42.9%). Conclusion: Dermoscopy can be useful for differential diagnosis of BP, SK, and CA. High-risk HPV was predominant in BP, SK and low-risk HPV in CA implying distinctive HPV related entities.
( Seol Hwa Seong ),( Ji Yun Jang ),( Jong Bin Park ),( Min Soo Jang ),( Kee Suck Suh ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1
Nontuberculous mycobacteria (NTM), which rarely cause cutaneous lesions, are a heterogeneous group of acid-fast bacilli other than Mycobacterium tuberculosis and Mycobacterium leprae. Among the cutaneous NTM infections, Mycobacterium marinum is the most common pathogen and its clinical manifestation can be variable. A 74-year-old woman presented with diffuse tender erythematous to yellow cellulitis-like patches on the left arm along the discrete papules on the left flank. Histopathologic findings showed caseating granuloma that distinctly had central necrosis with a palisaded lymphohistiocytic infiltration and multinucleated giant cells in the upper dermis. Non-caseating granulomas, nonspecific mixed cell infiltration in the deep dermis, and abscesses in the subcutaneous tissue were seen. Cultures for the NTM and sequencing of the polymerase chain reaction confirmed M. marinum infection. Retrospectively, acid-fast bacilli were found in the Ziehl-Neelsen stain. On the basis of histopathologic, microbiologic, and molecular findings, the diagnosis of cutaneous NTM infection caused by M. marinum was made. Among the variable clinicohistopathologic features of cutaneous NTM infection, cellulitis-like appearance is rarely observed and caseating granuloma surrounded by palisading lymphohistiocytic infiltration is not common. Herein, we report a case of unusual clinicohistopathologic features of cutaneous NTM infection caused by M. marinum.
( Jong Bin Park ),( Seol Hwa Seong ),( Ji Yun Jang ),( Myeong Hyeon Yang ),( Joon Hee Kim ),( Kee Suck Suh ),( Woo Young Sim ),( Min Soo Jang ) 대한피부과학회 2019 大韓皮膚科學會誌 Vol.57 No.2
Leukotrichia is defined as depigmentation of hair within vitiligo macules and is considered indicative of the destruction of the melanocyte reservoir within the hair follicle. A 15-year-old woman with acute diffuse and total alopecia (ADTA) presented with white hair growth with vitiligo on the right half of the scalp after 6 cycles of diphenylcyclopropenone (DPCP) application for ADTA. At the start of treatment, black hair growth was observed on the untreated, left half of the scalp. Seven months later, sustained growth of white hair on the right side of scalp was observed without further treatment. A diagnosis of vitiligo with leukotrichia following DPCP immunotherapy was made. She was treated with narrowband ultraviolet B (NBUVB) phototherapy three times per week. The vitiligo lesion with leukotrichia disappeared almost completely after 82 sessions of NBUVB phototherapy over 18 months. Herein, we report a 15-year-old woman with ADTA who developed vitiligo with leukotrichia following topical DPCP immunotherapy. (Korean J Dermatol 2019;57(2):94∼96)