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1.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-1002206

RESUMO

The Department of Dermatology at Kyungpook National University School of Medicine, initially the Dermatology Department of the Private Daegu Medical Training School in 1924, commemorated its 100th anniversary in 2023.Throughout its rich history, the department has been dedicated to advancing contemporary dermatology and enhancing the well-being of local communities through exceptional research, education, and social contributions.Initially tasked with the diagnosis, treatment, and education of patients with dermatological and urological disorders, the department evolved over time. In 1958, it separated from the Urology Department to focus solely on the diagnosis, research, and education of dermatological disorders. In 1962, Dr. Soon Bong Suh became the inaugural Chief of the Dermatology Department, marking the foundation of the Kyungpook National University School of Medicine’s Dermatology Department. Our legacy of pioneering contributions extends to dermatophytic diseases, which account for a large proportion of skin disorders in Korea, where we have excelled in basic research and treatment. These achievements have played a crucial role in the advancement of dermatophytic diseases.Subsequently, we have demonstrated expertise in blistering diseases and dermatopathology, making substantial contributions to the diagnosis and treatment of refractory skin conditions. Recently, we have been at the forefront of research and interventions for chronic inflammatory skin conditions that cause significant distress in many individuals, including atopic dermatitis and psoriasis. Our influence has also extended to severe and refractory skin disorders, including skin cancer and vascular anomalies. Striving to stay contemporary, our achievements now encompass aesthetics, including acne, pigmentation, and laser treatments. Our accomplishments have garnered widespread recognition nationwide, engendering high expectations for future advancements.

2.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-1002200

RESUMO

Methotrexate (MTX) is commonly employed in the management of chronic inflammatory skin diseases. We report the case of a 73-year-old man who presented with a persistent cough lasting for 1 month. He had an 11-year history of psoriasis and had received MTX (10.0 mg/wk) over the past 21 months. High-resolution chest computed tomography revealed diffuse ground-glass opacities and bronchiectasis affecting both lung fields. Based on clinical and radiological assessments, the patient was diagnosed with MTX-induced interstitial pneumonia. Notably, significant clinical and radiological improvement was observed 1 month after the discontinuation of MTX and corticosteroid administration. Although some reports have demonstrated lung toxicity in patients receiving high-dose MTX therapy, cases of adverse pulmonary effects following low-dose treatment in patients with psoriasis are rare.This case report underscores the rarity of interstitial pneumonia in a patient with psoriasis undergoing MTX treatment in Korea.

3.
Annals of Dermatology ; : 163-172, 2022.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-925470

RESUMO

Background@#Particulate matter (PM) is one of the air pollutants that can damage human skin; the recent increase in the amount of PM may be detrimental to skin health. @*Objective@#We aimed to investigate the effects of PM on cultured human sebocytes and outer root sheath (ORS) cells and the effects of Siegesbeckia Herba extract (SHE) on PM-treated cultured cells. @*Methods@#Sebocytes and ORS cells were cultured. The cultured cells were treated with various concentrations of PM of <10 μm in size (PM10) (10 μg/ml, 25 μg/ml, 50 μg/ml, and 100 μg/ml) for 24 h. Real-time polymerase chain reaction, measurement of reactive oxygen species (ROS), small interfering (si) RNA transfection, Oil Red O and Nile red staining, and immunofluorescence staining were performed to analyze the presence of inflammatory cytokines, matrix metalloproteinases (MMPs), aryl hydrocarbon receptor (AhR), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB), ROS, and lipid production. In addition, PM10 (100 μg/ml)-treated cultured cells were treated with 10 mg/ml of SHE. @*Results@#PM10 upregulates the expression of inflammatory cytokines, MMPs, AhR, NFkB, and ROS in cultured human sebocytes and ORS cells. The production of ROS was dramatically reduced in AhR siRNA-transfected cells. In addition, PM10 upregulates sebum production in cultured sebocytes. SHE inhibited the upregulation of inflammatory cytokines, MMPs, AhR, NF-kB, ROS, and sebum production in cultured human sebocytes and/or ORS cells by PM10. @*Conclusion@#Effects of PM10 on cultured human sebocytes and ORS cells can be regulated by SH.

4.
Annals of Dermatology ; : 182-190, 2022.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-925468

RESUMO

Background@#Particulate matter (PM) is an air pollutant that can impair the human skin.Antioxidants have been tested to improve PM-induced skin inflammation. @*Objective@#In this study, we investigated the effects of dieckol on PM-induced inflammation on cultured human sebocytes, outer root sheath (ORS) cells, and mice pretreated with Cutibacterium acnes. @*Methods@#We cultured and treated the sebocytes and ORS cells with 5 μM of dieckol and 100 μg/ml of PM10 for 24 h. The C. acnes−pretreated mice received 5 μM of dieckol and 100 μg/ml of PM10. We measured cell viability using MTT assay. Real-time PCR and measurement of reactive oxygen species (ROS) and sebum production analyzed the effects. @*Results@#Dieckol inhibited the upregulation of the gene expression of the inflammatory cytokines, matrix metalloproteinase (MMP), aryl hydrocarbon receptor, and nuclear factor kappa-light-chain-enhancer of activated B cells by PM10 in the cultured sebocytes and ORS cells and inhibited an increase in ROS production by PM10 in the cultured sebocytes.In addition, dieckol decreased the inflammatory cytokines, MMP, and sebum production in C. acnes−pretreated mice. @*Conclusion@#Dieckol effectively reduced the expression of inflammatory biomarkers and the production of sebum in cultured sebocytes, ORS cells, and C. acnes−pretreated mice.

5.
Annals of Dermatology ; : 95-104, 2022.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-925455

RESUMO

Background@#Ginseng has been used in Korea for a long time as a restorative herbal medicine. Black ginseng (BG) is made from red or white ginseng by multiple steamy and dry processes. Although BG has been reported to have anti-inflammatory potential, studies on its influence on inflammatory skin disorders are lacking. @*Objective@#To investigate the effects of BG under the inflammatory conditions of cultured sebocytes and outer root sheath (ORS) cells. @*Methods@#The cultured cells were treated with 0.1% dimethyl sulfoxide, 5 μg/ml lipopolysaccharide (LPS) or 5 μg/ml LPS+50 μg/ml BG for 6 hours and 24 hours. Reverse transcription-polymerase chain reaction (RT-PCR), real-time PCR, enzyme-linked immunosorbent assay, western blotting, immunofluorescence staining and Nile red staining were performed for analysis of inflammatory biomarkers and sebum-related biomarkers. @*Results@#BG brought out the increased gene and protein expression of inflammatory biomarkers such as interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor-a, in the LPStreated sebocytes and ORS cells. In addition, BG induced increased expression of TLR4, p-c-jun, p-JNK and p-iκB in LPS-treated sebocytes and ORS cells. Furthermore, it significantly increased the expression of LL-37 and the production of sebum in LPS-treated sebocytes. @*Conclusion@#It may be possible for BG to increase the expression of inflammatory biomarkers in inflammatory skin disorders, such as acne.

6.
Annals of Dermatology ; : 40-45, 2022.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-913468

RESUMO

Background@#Although particulate matter likely provokes inflammatory reactions in those with chronic skin disorders like atopic dermatitis, no study has examined the relationship between particulate matter and psoriasis exacerbation. @*Objective@#This study evaluated possible associations between particulate matter and hospital visits for psoriasis patients in 7 major cities in South Korea. @*Methods@#We investigated the relationship between psoriasis and particulate matter. To do this, we used psoriasis patient data from the Korean National Health Insurance Service database. In addition, PM 10 and PM 2.5 concentration data spanning a 3-year time frame were obtained from the Korea Environment Corporation. @*Results@#A pattern analysis generated by the sample cross-correlation function and time series regression showed a correlation between particulate matter concentration and the number of hospital visits by psoriasis patients. However, the prewhitening method, which minimizes the effects of other variables besides particulate matter, revealed no correlation between the two. @*Conclusion@#This study suggests that particulate matter has no impact on hospital visit frequency among psoriasis patients in South Korean urban areas.

7.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-901992

RESUMO

An 83-year-old man presented with an intermittently bleeding fixed nodule on the left side of the chest for 2 months. Due to the clinical suspicion of metastatic cancer or a ruptured epidermal cyst, a punch biopsy was performed, which revealed granulation tissue. During surgical excision, a connection between the granulation tissue and the deeper structure was confirmed. Based on the clinicopathological findings, a cutaneous fistula was suspected;a detailed history revealed that he had experienced blunt chest trauma in a motorcycle accident 2 months before. Subsequent chest computed tomography showed soft tissue infiltration in the left sixth rib. Finally, the patient was diagnosed with a cutaneous fistula and underwent resection of the left sixth rib and costal cartilage. Cutaneous fistulae rarely occur in the chest. In cases where a recalcitrant inflammatory nodule is observed on the chest, the patient’s trauma history and ordinary medical history should be evaluated to rule out a cutaneous fistula.

8.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-901946

RESUMO

Background@#Atopic dermatitis (AD) is a chronic inflammatory skin disease that often results in a severely reduced quality of life due to its irritating symptoms. Cooling the skin can be an effective supplement for pruritus in the case of AD, since it can modulate itch sensitivity, which has an antipruritic effect. @*Objective@#The aim of this study was to evaluate the effect of a soothing cooler on relieving pruritus in the case of mild AD. @*Methods@#Thirty patients with mild AD were enrolled in this study. They were advised to use the soothing cooler on their left forearms twice daily for eight weeks. Immediate responses were assessed at baseline, and follow-up was done at weeks 2, 4, and 8 to evaluate long-term responses. The effect of the soothing cooler was evaluated using the visual analogue scale for pruritus, transepidermal water loss, hydration capacitance, and the Investigator’s Global Assessment scale for AD. Safety was monitored through the report of adverse events during the study period. @*Results@#There were immediate and long-term improvements in the visual analogue scale scores of left forearm pruritus (p<0.05), which were statistically significant. No adverse event was reported during the study period. @*Conclusion@#The results of this study demonstrated the pruritus-relieving effect of the soothing cooler for patients with mild AD.

9.
Annals of Dermatology ; : 409-418, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-896828

RESUMO

Background@#Although ginseng has beneficial effects largely related to their constituent ginsenosides, pharmacological effects of non-ginsenosides have been reported. Acidic polysaccharides of red ginseng (RGAP) are among the non-ginsenoside constituents that have characterized antioxidant properties. @*Objective@#We investigated the impact of RGAP on sebocytes and outer root sheath (ORS) cells treated with lipopolysaccharide (LPS) and in mice with Cutibacterium acnes (C. acnes)-induced inflammatory nodules. @*Methods@#Sebocytes and ORS cells were cultured and treated with either 0.1% dimethyl sulfoxide, 5 μg/ml LPS, 50 μg/ml RGAP or 5 μg/ml LPS+50 μg/ml RGAP for 6 and 24 hours.Real-time polymerase chain reaction, ELISA, Western blot analysis, and immunofluorescence staining were among the methods used to detect and quantify inflammatory cytokine production. Mice infected with C. acnes were treated with 2 weeks of RGAP provided in drinking water followed by immunohistochemical evaluation of inflammatory nodules. @*Results@#Administration of RGAP to LPS-treated sebocytes and ORS cell cultures resulted in increased expression of inflammatory cytokines like interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor-α, toll-like receptor 2, p-c-jun, p-JNK and p-iKB (p<0.05). Administration of RGAP also resulted in increased expression of LL37 in LPS-treated sebocytes and ORS cells, and increased production of sebum in LPS-treated sebocytes (p<0.05). RGAP also promoted increased expression of inflammatory biomarkers in C. acnes-associated inflammatory nodules in mice (p<0.05). @*Conclusion@#RGAP may exacerbate inflammatory pathology associated with acne vulgaris. Ginseng supplements may be contraindicated in patients diagnosed with inflammatory acne.

10.
Annals of Dermatology ; : 237-244, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-896807

RESUMO

Background@#Only a few studies have tried to assess factors relevant to the satisfaction of the participants in atopic dermatitis (AD) educational programs. More systematic modeling of this issue is needed. @*Objective@#To examine the benefit of a conjoint educational program for AD on patients and caregivers in a clinical setting. @*Methods@#In a half-day educational program called “AD school”, 831 people (493 patients and 338 family members) participated for 8 years. Various educational and entertaining programs were provided. The on-site survey was administered to measure participants’ satisfaction and perception of the benefit. We applied structural equation modeling to identify the relations among satisfaction and perception. @*Results@#A total of 209 family survey data was obtained and analyzed. The survey items were grouped into four categories. The categories were classified as individual education, group education, fun activity, and overall satisfaction (fun, benefit, intention to re-join and recommend to others). According to the model that we built, comprehensive group education was demonstrated to be the most relevant factor affecting overall satisfaction. @*Conclusion@#Our holistic approach would allow dermatologists to improve the efficacy of the conjoint educational program for AD.

11.
Annals of Dermatology ; : 245-253, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-896806

RESUMO

Background@#Ginseng has been known in Korea as a healthsupportive herbal medicine from time immemorial. Essential oil isolated from fresh ginseng has been shown to display antibacterial and anti-inflammatory activities. @*Objective@#The effects of red ginseng oil (RGO) on the lipopolysaccharide (LPS)-treated sebocytes and outer root sheath (ORS) cells were studied. @*Methods@#The cultured cells were treated with either 0.1% dimethyl sulfoxide, 5 μg/ml LPS, 50 μg/ml RGO, or 5 μg/ml LPS plus 50 μg/ml RGO for 6 and 24 hours.RT-PCR, real-time PCR, enzyme-linked immunosorbent assay, western blot, and immunofluorescence staining were performed for the analysis of inflammatory cytokine. @*Results@#RGO showed the increased gene and protein expression of inflammatory cytokines, including interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor-α in the LPS-treated sebocytes and ORS cells. RGO also showed the increased protein expression of p-c-jun and p-JNK in the LPS-treated sebocytes and ORS cells. Gene expression of TLR2 was increased in LPS-treated sebocytes following treatment with RGO. Additionally, RGO resulted in an increased expression of LL-37 in the LPS-treated sebocytes and ORS cells. Moreover, it remarkably increased the production of sebum in LPS-treated sebocytes. @*Conclusion@#RGO might be among the aggravating factors of acne vulgaris. It would be better to stop taking red ginseng in patients with inflammatory acne.

12.
Annals of Dermatology ; : 361-364, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-896784

RESUMO

Nevus comedonicus is a very rare skin disorder characterized by the presence of comedo-like dilated pores with keratinous plugs, rarely resulting in painful recurrent inflammatory nodules or cysts. It presents as localized or extensive form. It displays unilaterally or bilaterally segmental distribution. Histopathologically, it is characterized by keratin-filled epidermal invagination with bulbous proliferation of keratinocytes. The condition may be caused by fibroblast growth factor receptor 2 mutation. Although it may be controlled by a variety of therapeutic modalities, it is difficult to achieve complete resolution. We report a case of extensive nevus comedonicus with inflammatory nodules and cysts controlled with adalimumab.

13.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-894288

RESUMO

An 83-year-old man presented with an intermittently bleeding fixed nodule on the left side of the chest for 2 months. Due to the clinical suspicion of metastatic cancer or a ruptured epidermal cyst, a punch biopsy was performed, which revealed granulation tissue. During surgical excision, a connection between the granulation tissue and the deeper structure was confirmed. Based on the clinicopathological findings, a cutaneous fistula was suspected;a detailed history revealed that he had experienced blunt chest trauma in a motorcycle accident 2 months before. Subsequent chest computed tomography showed soft tissue infiltration in the left sixth rib. Finally, the patient was diagnosed with a cutaneous fistula and underwent resection of the left sixth rib and costal cartilage. Cutaneous fistulae rarely occur in the chest. In cases where a recalcitrant inflammatory nodule is observed on the chest, the patient’s trauma history and ordinary medical history should be evaluated to rule out a cutaneous fistula.

14.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-894242

RESUMO

Background@#Atopic dermatitis (AD) is a chronic inflammatory skin disease that often results in a severely reduced quality of life due to its irritating symptoms. Cooling the skin can be an effective supplement for pruritus in the case of AD, since it can modulate itch sensitivity, which has an antipruritic effect. @*Objective@#The aim of this study was to evaluate the effect of a soothing cooler on relieving pruritus in the case of mild AD. @*Methods@#Thirty patients with mild AD were enrolled in this study. They were advised to use the soothing cooler on their left forearms twice daily for eight weeks. Immediate responses were assessed at baseline, and follow-up was done at weeks 2, 4, and 8 to evaluate long-term responses. The effect of the soothing cooler was evaluated using the visual analogue scale for pruritus, transepidermal water loss, hydration capacitance, and the Investigator’s Global Assessment scale for AD. Safety was monitored through the report of adverse events during the study period. @*Results@#There were immediate and long-term improvements in the visual analogue scale scores of left forearm pruritus (p<0.05), which were statistically significant. No adverse event was reported during the study period. @*Conclusion@#The results of this study demonstrated the pruritus-relieving effect of the soothing cooler for patients with mild AD.

15.
Annals of Dermatology ; : 409-418, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-889124

RESUMO

Background@#Although ginseng has beneficial effects largely related to their constituent ginsenosides, pharmacological effects of non-ginsenosides have been reported. Acidic polysaccharides of red ginseng (RGAP) are among the non-ginsenoside constituents that have characterized antioxidant properties. @*Objective@#We investigated the impact of RGAP on sebocytes and outer root sheath (ORS) cells treated with lipopolysaccharide (LPS) and in mice with Cutibacterium acnes (C. acnes)-induced inflammatory nodules. @*Methods@#Sebocytes and ORS cells were cultured and treated with either 0.1% dimethyl sulfoxide, 5 μg/ml LPS, 50 μg/ml RGAP or 5 μg/ml LPS+50 μg/ml RGAP for 6 and 24 hours.Real-time polymerase chain reaction, ELISA, Western blot analysis, and immunofluorescence staining were among the methods used to detect and quantify inflammatory cytokine production. Mice infected with C. acnes were treated with 2 weeks of RGAP provided in drinking water followed by immunohistochemical evaluation of inflammatory nodules. @*Results@#Administration of RGAP to LPS-treated sebocytes and ORS cell cultures resulted in increased expression of inflammatory cytokines like interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor-α, toll-like receptor 2, p-c-jun, p-JNK and p-iKB (p<0.05). Administration of RGAP also resulted in increased expression of LL37 in LPS-treated sebocytes and ORS cells, and increased production of sebum in LPS-treated sebocytes (p<0.05). RGAP also promoted increased expression of inflammatory biomarkers in C. acnes-associated inflammatory nodules in mice (p<0.05). @*Conclusion@#RGAP may exacerbate inflammatory pathology associated with acne vulgaris. Ginseng supplements may be contraindicated in patients diagnosed with inflammatory acne.

16.
Annals of Dermatology ; : 237-244, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-889103

RESUMO

Background@#Only a few studies have tried to assess factors relevant to the satisfaction of the participants in atopic dermatitis (AD) educational programs. More systematic modeling of this issue is needed. @*Objective@#To examine the benefit of a conjoint educational program for AD on patients and caregivers in a clinical setting. @*Methods@#In a half-day educational program called “AD school”, 831 people (493 patients and 338 family members) participated for 8 years. Various educational and entertaining programs were provided. The on-site survey was administered to measure participants’ satisfaction and perception of the benefit. We applied structural equation modeling to identify the relations among satisfaction and perception. @*Results@#A total of 209 family survey data was obtained and analyzed. The survey items were grouped into four categories. The categories were classified as individual education, group education, fun activity, and overall satisfaction (fun, benefit, intention to re-join and recommend to others). According to the model that we built, comprehensive group education was demonstrated to be the most relevant factor affecting overall satisfaction. @*Conclusion@#Our holistic approach would allow dermatologists to improve the efficacy of the conjoint educational program for AD.

17.
Annals of Dermatology ; : 245-253, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-889102

RESUMO

Background@#Ginseng has been known in Korea as a healthsupportive herbal medicine from time immemorial. Essential oil isolated from fresh ginseng has been shown to display antibacterial and anti-inflammatory activities. @*Objective@#The effects of red ginseng oil (RGO) on the lipopolysaccharide (LPS)-treated sebocytes and outer root sheath (ORS) cells were studied. @*Methods@#The cultured cells were treated with either 0.1% dimethyl sulfoxide, 5 μg/ml LPS, 50 μg/ml RGO, or 5 μg/ml LPS plus 50 μg/ml RGO for 6 and 24 hours.RT-PCR, real-time PCR, enzyme-linked immunosorbent assay, western blot, and immunofluorescence staining were performed for the analysis of inflammatory cytokine. @*Results@#RGO showed the increased gene and protein expression of inflammatory cytokines, including interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor-α in the LPS-treated sebocytes and ORS cells. RGO also showed the increased protein expression of p-c-jun and p-JNK in the LPS-treated sebocytes and ORS cells. Gene expression of TLR2 was increased in LPS-treated sebocytes following treatment with RGO. Additionally, RGO resulted in an increased expression of LL-37 in the LPS-treated sebocytes and ORS cells. Moreover, it remarkably increased the production of sebum in LPS-treated sebocytes. @*Conclusion@#RGO might be among the aggravating factors of acne vulgaris. It would be better to stop taking red ginseng in patients with inflammatory acne.

18.
Annals of Dermatology ; : 361-364, 2021.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-889080

RESUMO

Nevus comedonicus is a very rare skin disorder characterized by the presence of comedo-like dilated pores with keratinous plugs, rarely resulting in painful recurrent inflammatory nodules or cysts. It presents as localized or extensive form. It displays unilaterally or bilaterally segmental distribution. Histopathologically, it is characterized by keratin-filled epidermal invagination with bulbous proliferation of keratinocytes. The condition may be caused by fibroblast growth factor receptor 2 mutation. Although it may be controlled by a variety of therapeutic modalities, it is difficult to achieve complete resolution. We report a case of extensive nevus comedonicus with inflammatory nodules and cysts controlled with adalimumab.

19.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-917642

RESUMO

Background@#Cutaneous malignant melanoma (CMM) develops mainly in the elderly, although it is often seen in young patients and in clinical practice. However, there are few studies on the clinical features of young patients with CMM in Korea. @*Objective@#To investigate the clinical characteristics of young Korean patients with CMM. @*Methods@#We retrospectively reviewed the medical records of patients with CMM between January 2009 and June 2019 and compared the clinical features of CMM in patients aged 10∼39 and 50∼79 years. @*Results@#Of the 341 patients with CMM, only 22 (6.5%) were between the age of 10∼39 and 250 (73.3%) were aged 50∼79. Acral lentiginous melanoma (ALM) was the most common clinical subtype in both groups (45.5% and 71.2%, respectively). Subungual melanoma was more common in age 10∼39 years (27.3% vs. 17.2%), whereas ALM except subungual melanoma was more common in age 50∼79 years (18.2% vs. 54.0%). Superficial spreading melanoma (31.8%) was also a significant subtype observed in age 10∼39 years (p<0.001). Frequently involved locations in age group 10∼39 were fingers (27.3%) and trunk (22.7%), but feet (40.8%) were common in age group 50∼79 (p=0.009). There were no differences in mean Breslow thickness, lymph node metastases, or staging of CMM (p>0.05). @*Conclusion@#Compared with elderly patients, CMM in patients aged 10∼39 showed differences in the location of the lesion and clinical subtype. Therefore, a misdiagnosis can be prevented when a young patient has suspected CMM on the finger or trunk.

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