RESUMO
Some morphological variants of benign fibrous histiocytoma (dermatofibroma) present with distinct clinical features. In particular, atypical, aneurysmal, and cellular fibrous histiocytoma are associated with a significant risk of local recurrence. Furthermore, very rarely, cutaneous fibrous histiocytoma can lead to metastatic disease. Deep benign fibrous histiocytoma is an uncommon and poorly recognized clinical subtype that arises in subcutaneous or deep soft tissue. Deep benign fibrous histiocytoma has many histologic features in common with cellular fibrous histiocytoma. Deep benign fibrous histiocytoma recurs in approximately 20% of cases and may rarely metastasize. We report a rare case of deep benign fibrous histiocytoma with metastatic potential in a 38-year-old man who presented with a 2-year history of a recurrent hard mass on his left shoulder.
Assuntos
Adulto , Humanos , Aneurisma , Histiocitoma Fibroso Benigno , Metástase Neoplásica , Recidiva , OmbroRESUMO
Amelanotic melanoma comprises only 1.8~8.1% of malignant melanomas, and is difficult to diagnose clinically due to the lack of the diagnostic evidence of clinical pigmentation. To our knowledge, it is rarely reported, and only 10 cases have been reported in the Korean dermatological literature. It presents rather conflicting features such as a pink or red macule, papule, plaque, or nodule mimicking various benign and malignant conditions; therefore, it is difficult to diagnose. We performed a review of six patients with amelanotic melanoma focusing on differential diagnosis, particularly at the time of the initial visit. Clinical impressions included pyogenic granuloma, dermatofibrosarcoma protuberans, eccrine poroma, epidermal cyst, keloid, pilomatricoma, and squamous cell carcinoma in addition to malignant melanoma. The biopsy specimens were consistent with malignant melanoma with little or no melanin pigment on hematoxylin and eosin and Fontana-Masson stains. Four of the six patients were positive for S-100 and HMB-45, but two patients were positive for S-100 only. We report these cases to remind clinicians of the necessity of including malignant melanoma in the differential diagnosis process when patients show poor and unpredictable responses to treatment after a clinical diagnosis of other benign and malignant conditions.
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Humanos , Biópsia , Carcinoma de Células Escamosas , Corantes , Dermatofibrossarcoma , Diagnóstico , Diagnóstico Diferencial , Amarelo de Eosina-(YS) , Cisto Epidérmico , Granuloma Piogênico , Hematoxilina , Queloide , Melaninas , Melanoma , Melanoma Amelanótico , Pigmentação , Pilomatrixoma , PoromaRESUMO
No abstract available.
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BACKGROUND: Button osteoma presents as small circumscribed ivory-like lumps on the skull vault. Although not rare, its diagnosis can be challenging for dermatologists. OBJECTIVE: To clarify the clinical characteristics of button osteoma by reviewing 10 cases. METHODS: Ten patients diagnosed with button osteoma at the Department of Dermatology, Kyungpook National University Hospital, between January 2011 and August 2014 were enrolled. We retrospectively reviewed medical records and analyzed demographic and clinical characteristics including sex, age, sites, number of lesions, symptoms, duration, histopathological finding, radiological findings, and treatment. RESULTS: All patients presented with an asymptomatic small circumscribed hard lump fixed to a bony structure. There were 9 female and 1 male patient, and the mean age was 54 years (range, 28approximately61 years). The most common site was the forehead, and disease duration ranged from 2 weeks to more than 20 years. The differential diagnosis included cranial exostosis, ballooned osteoma, epidermal cyst, and lipoma. Simple radiography, ultrasonography, and computed tomography (CT) were used to make a confirmative diagnosis. Histopathological findings showed lamellated bony structures with poor vascularization. Ostectomy was performed for 5 patients, and no recurrence was detected within an average of 13.4 months after treatment. CONCLUSION: This review characterized button osteoma. Surgical excision is a useful therapeutic modality after CT-based diagnosis. Further studies with more patients are required to confirm the findings.
Assuntos
Feminino , Humanos , Masculino , Dermatologia , Diagnóstico , Diagnóstico Diferencial , Cisto Epidérmico , Exostose , Testa , Lipoma , Prontuários Médicos , Osteoma , Radiografia , Recidiva , Estudos Retrospectivos , Crânio , UltrassonografiaRESUMO
BACKGROUND: Although skin cancer incidence has recently increased, there has been little research into the incidence, clinical manifestations, and prognosis of skin cancers in Korea, especially in Daegu City and the Kyungpook Province. OBJECTIVE: To analyze changes over the recent two decades in incidence and clinical patterns, including recurrence of skin cancers diagnosed at a university hospital in Daegu City. METHODS: We reviewed 1,566 skin cancer cases from 1994 to 2013 at the Department of Dermatology in Kyungpook National University Hospital (KNUH). We also divided them into first (1994~2003) and second group (2004~2013) to examine changes over the years. RESULTS: The average incidence of skin cancers among the total number of outpatients was 1.39% through whole study period including 0.38% in the first and 2.10% in the second decade. Basal cell carcinoma (BCC) was the most commonly diagnosed skin cancer (total:1st:2nd=0.60%:0.16%:0.91%), followed by squamous cell carcinoma (SCC) (0.43%:0.12%:0.65%) and malignant melanoma (MM) (0.22%:0.05%:0.34%). The most common skin cancer site was the face in each decade. The recurrence of three major skin cancers (BCC, SCC and MM) was diagnosed in 49 of the 1,402 patients (3.50%). In each disease, the recurrence rate (1st:2nd) was 1.64% (BCC, 4.11%:1.34%), 3.51% (SCC, 11.11%:2.55%), and 8.57% (MM, 4.35%:9.01%). CONCLUSION: This epidemiological study provided useful information about the incidence and prognosis of skin tumors in Korea, especially in Daegu City and Kyungpook Province.
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Humanos , Carcinoma Basocelular , Carcinoma de Células Escamosas , Dermatologia , Estudos Epidemiológicos , Incidência , Coreia (Geográfico) , Melanoma , Pacientes Ambulatoriais , Prognóstico , Recidiva , Pele , Neoplasias CutâneasRESUMO
Protothecosis is a rare skin infection caused by pathogenic algae of the genus Prototheca, especially Prototheca wickerhamii. It is widely distributed throughout the natural world in tree, river, lake, sewage, soil, marsh, household waste, etc. A 79-year-old woman presented with ill-defined edematous and erythematous patches with various sized and shaped deep ulcers on both dorsal hands and left distal forearm for 1 month. The left forearm was initially injured by scratching due to pruritus and insidiously aggravated. Biopsy specimen revealed the characteristic morula-like sporangias containing multiple endospores in the dermis. The GMS and D-PAS stains highlighted the characteristic spores showing multiple internal septations and some unicellular endospore. P. wickerhamii was isolated in culture and identified by biochemical studies. Oral itraconazole 200 mg/day administration for 7 weeks resulted in marked improvement of the skin lesion.
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Idoso , Feminino , Humanos , Biópsia , Corantes , Derme , Características da Família , Antebraço , Mãos , Itraconazol , Lagos , Prototheca , Prurido , Rios , Esgotos , Pele , Solo , Esporângios , Esporos , Úlcera , Áreas AlagadasRESUMO
BACKGROUND: The effectiveness of ultraviolet (UV) radiation, visible light, or infrared light therapy for the treatment of acne is the subject of ongoing scientific debate. OBJECTIVE: This study was conducted to investigate changes in sebum production and the expression of inflammatory cytokines, matrix metalloproteinases (MMPs), and antimicrobial peptides (AMPs), following exposure of cultured human sebocytes to UVA radiation and light at wavelengths of 650 nm and 830 nm. METHODS: Reverse transcription polymerase chain reaction assays were performed to measure the gene expression levels of inflammatory cytokines (interleukin [IL]-1beta, IL-6, IL-8, and tumor necrosis factor-alpha), MMPs (MMP-1, MMP-3, and MMP-9), and AMPs (psoriasin, hBD-2, hBD-3, and LL-37) in cultured sebocytes after exposure to UVA radiation (2 J/cm2, 3 J/cm2, and 5 J/cm2) and light at wavelengths of 650 nm (14 J/cm2, 29 J/cm2, and 87 J/cm2) and 830 nm (5 J/cm2, 10 J/cm2, and 30 J/cm2). Expression of inflammatory cytokine proteins and sebum production were measured using enzyme-linked immunoassays and a lipid analysis kit, respectively. RESULTS: Exposure of cultured sebocytes to UVA radiation and light at wavelengths of 650 nm and 830 nm did not show a significant increase in the expression of inflammatory cytokines, MMPs, or AMPs. Sebum production was not significantly decreased after exposure to UVA radiation and light at both wavelengths. CONCLUSION: We propose that UVA radiation, visible light, and infrared light can be used to target Propionibacterium acnes for the treatment of acne, without an increase in the expression of inflammatory biomarkers and sebum production.
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Humanos , Acne Vulgar , Biomarcadores , Citocinas , Expressão Gênica , Imunoensaio , Interleucina-6 , Interleucina-8 , Luz , Metaloproteinases da Matriz , Necrose , Peptídeos , Fototerapia , Reação em Cadeia da Polimerase , Propionibacterium acnes , Transcrição Reversa , SeboRESUMO
BACKGROUND: Although several interventional pain management procedures (IPs) for reducing the acute herpes zoster (HZ)-related pain have shown some level of effectiveness on early pain relief and the prevention of postherpetic neuralgia (PHN), no conclusive evidence has been presented to support their effectiveness. OBJECTIVE: We evaluated the effectiveness of IPs during the acute phase of HZ for reducing HZ-related pain. METHODS: Sixty-one patients with acute HZ were assessed using the pain visual analogue scale (VAS) that ranges from 0 to 10 at the initial visit and after 1, 3 and 6 months. Changes in pain VAS and the incidence of PHN (pain after 1 month) were compared between 2 patient groups: those who received standard therapy with oral antivirals and analgesics (ST, n=38) and those who received standard therapy with IPs (STIPs, n=23). PHN was defined as either "pain of 1 or higher in pain VAS" or "clinically meaningful PHN (pain of 3 or higher in pain VAS)." RESULTS: Although the initial pain VAS level of patients treated with STIPs (5.74) was higher than that of patients receiving ST (4.09), no significant difference in pain VAS number was seen between the 2 groups at 3 months (0.13 vs. 0.17) and 6 months (0.09 vs. 0.03) of follow-up. The incidence of PHN also was not statistically significant different between the 2 groups at 3 (9.5% vs. 8.3%) and 6 months (9.5% vs. 4.2%). A similar trend was observed in the analysis of HZ patients whose pain VAS level was 3 or higher at the initial assessment. CONCLUSION: Standard therapy with early IPs is effective for rapidly reducing HZ-related pain.
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Humanos , Analgésicos , Antivirais , Seguimentos , Herpes Zoster , Incidência , Neuralgia Pós-Herpética , Manejo da DorRESUMO
BACKGROUND: For the treatment of pyogenic granuloma (PG), surgical excision, electrocautery, and laser therapy have been employed, apart from other methods. Sodium tetradecyl sulfate (STS) sclerotherapy, as a minimally invasive treatment for vascular lesion, is frequently used for vascular malformations with considerable efficacy and safety. However, there have been a few reports about its use in the treatment of PG. OBJECTIVE: This study was conducted to evaluate the efficacy, recurrence, and side effects of sclerotherapy using 1% STS in the treatment of PG. METHODS: We evaluated 72 patients with PG who were treated with 1% STS from January 2008 to December 2014. Sclerotherapy using 1% STS was performed by "blind" intralesional injection without the aid of imaging such as ultrasonography. The results were evaluated by physical examination, photographic evaluation, and the patient's subjective satisfaction, and then they were classified into 3 groups: complete remission, partial remission, and no change. Recurrence and side effects were also evaluated. RESULTS: Complete remission of PG was achieved in 65 (90.3%) of patients after 1.23 average sessions (range, 1~5 sessions). The remaining patients showed partial remission, with no instances of the treatment resulting in no change. One case of recurrence (1.4%) from partial remission group was seen after 3 months. Clinically, side effects such as pain, tenderness, hyperpigmentation, ulcer, numbness, scarring, and hair loss patches were noted in 18 (25%) patients, but these were all mild and transient. CONCLUSION: 1% STS sclerotherapy can be recommended as an effective therapeutic modality for the treatment of PG with insignificant adverse effects and low recurrence rate.