Current Issue : October - December Volume : 2011 Issue Number : 1 Articles : 10 Articles
Basal cell carcinoma (BCC) is the most common skin tumor and contains several different histopathological types. Here, we report a case of cystic basal cell carcinoma, which is relatively rare and might be clinically misdiagnosed. A dermatoscopic examination of the case revealed a homogenous blue/black area usually not seen in BCC. We reviewed 102 BCC cases resected and diagnosed at Sapporo Medical University Hospital between April 2005 and March 2010. Among them, only three were the cystic type....
Background\nPrevious studies have examined the association between ABO blood group and the risk of some malignancies. However, no prospective cohort study to date has examined the association between ABO blood group and the risk of skin cancer.\n\nMethodology/Principal Findings\nUsing two large cohorts in the US, we examined ABO blood type and incidence of skin cancer, including melanoma, squamous cell carcinoma (SCC), and basal cell carcinoma (BCC). We followed up study participants (70,650 female nurses and 24,820 male health professionals) on their diagnosis of incident skin cancer from cohort baseline (1976 in women and 1986 in men) until 2006. Study participants reported their blood type in 1996 in both cohorts. During the follow-up, 685 participants developed melanoma, 1,533 developed SCC and 19,860 developed BCC. We used Cox proportional hazards models to calculate the hazard ratios (HR) and 95% confidence intervals (CI) of each type of skin cancer. We observed that non-O blood group (A, AB, and B combined) was significantly associated with a decreased risk of non-melanoma skin cancer overall. Compared to participants with blood group O, participants with non-O blood group had a 14% decreased risk of developing SCC (multivariable HR: 0.86; 95% CI: 0.78, 0.95) and a 4% decreased risk of developing BCC (multivariable HR: 0.96; 95% CI: 0.93, 0.99). The decreased risk of melanoma for non-O blood group was not statistically significant (multivariable HR: 0.91; 95% CI: 0.78, 1.05).\n\nConclusion/Significance\nIn two large independent populations, non-O blood group was associated with a decreased risk of skin cancer. The association was statistically significant for non-melanoma skin cancer. Additional studies are needed to confirm these associations and to define the mechanisms by which ABO blood type or closely linked genetic variants may influence skin cancer risk....
BACKGROUND: Diagnosing pigmented skin lesions in general practice is challenging. SIAscopy has been shown to increase diagnostic accuracy for melanoma in referred populations. We aimed to develop and validate a scoring system for SIAscopic diagnosis of pigmented lesions in primary care.\n\nMETHODS: This study was conducted in two consecutive settings in the UK and Australia, and occurred in three stages: 1) Development of the primary care scoring algorithm (PCSA) on a sub-set of lesions from the UK sample; 2) Validation of the PCSA on a different sub-set of lesions from the same UK sample; 3) Validation of the PCSA on a new set of lesions from an Australian primary care population. Patients presenting with a pigmented lesion were recruited from 6 general practices in the UK and 2 primary care skin cancer clinics in Australia. The following data were obtained for each lesion: clinical history; SIAscan; digital photograph; and digital dermoscopy. SIAscans were interpreted by an expert and validated against histopathology where possible, or expert clinical review of all available data for each lesion.\n\nRESULTS: A total of 858 patients with 1,211 lesions were recruited. Most lesions were benign naevi (64.8%) or seborrhoeic keratoses (22.1%); 1.2% were melanoma. The original SIAscopic diagnostic algorithm did not perform well because of the higher prevalence of seborrhoeic keratoses and haemangiomas seen in primary care. A primary care scoring algorithm (PCSA) was developed to account for this. In the UK sample the PCSA had the following characteristics for the diagnosis of 'suspicious': sensitivity 0.50 (0.18-0.81); specificity 0.84 (0.78-0.88); PPV 0.09 (0.03-0.22); NPV 0.98 (0.95-0.99). In the Australian sample the PCSA had the following characteristics for the diagnosis of 'suspicious': sensitivity 0.44 (0.32-0.58); specificity 0.95 (0.93-0.97); PPV 0.52 (0.38-0.66); NPV 0.95 (0.92-0.96). In an analysis of lesions for which histological diagnosis was available (n = 111), the PCSA had a significantly greater Area Under the Curve than the 7-point checklist for the diagnosis of melanoma (0.83; 95% CI 0.71-0.95 versus 0.61; 95% CI 0.44-0.78; p = 0.02 for difference).\n\nCONCLUSIONS: The PCSA could have a useful role in improving primary care management of pigmented skin lesions. Further work is needed to develop and validate the PCSA in other primary care populations and to evaluate the cost-effectiveness of GP management of pigmented lesions using SIAscopy....
Introduction: Epidemiology of skin diseases has been studied and evaluated occasionally. In view of high incidence of skin diseases and economic burden that it poses, there is a need to evaluate the present epidemiology and prescribing pattern of skin disorders. Objective: To assess common skin conditions, drug utilization patterns and cost analysis in Dermatology Out patients Department (OPD) of Tertiary Care hospital. Methodology: After taking Ethics committee�s permission, prescriptions of 600 patients attending Dermatology OPD were audited. The prescriptions were analyzed for common skin conditions drug utilization and cost analysis. Results: The common skin conditions found were Pyoderma and Scabies while common classes of drugs prescribed were antiallergics, antifungals and steroids. Drugs prescribed by Generic name were 16.6% and Brand names were 83.4%. It was revealed that 30% of total drugs dispensed from hospital pharmacy and 70% from outside pharmacy. Average hospital and outside pharmacy costs were INR19.40 and INR116.20, respectively. The outside pharmacy cost of prescription (Spearman�s Rho = -0.130, p < 0.01) as well as cost paid by the patients (Spearman�s Rho = 0.408, p < 0.001) had a negative correlation with the socioeconomic score as the drugs were prescribed irrespective of the socioeconomic class. Conclusion: The dermatological prescription analysis gives a message to the prescribing physician to achieve rational and cost effective medical care. The drugs which are made available in the hospital pharmacy should be based on clinical evidence generated from meta-analysis of drug studies, pharmacoepidemiology and pharmacoeconomic studies. There is dire need for physicians training with regards to rational use of drugs and pharmacoeconomics. Hospital should make essential drugs available with continuous monitoring to improve the prescribing pattern. The limitation of this study is that the actual direct costs and indirect costs were not studied. It opens the scope for further study in this area....
All biological events in the cell are governed primarily by changes in the expression of key genes. The ability of a cell to switch on and off gene expression drives all the biological function and activity. With this understanding we aimed to elucidate gene expression analysis in skin cancer by employing insilico CGAP project. Cancer genome anatomy project tools Sage Genei were used to analyze gene expression in skin cancer by comparing different library pools. We found three genes (AW078632, THRSP, and ADH1B) were highly over expressed in skin cancer by comparing with different pool libraries and their tags sequence are 2841, 2629, and 1801 times more in pool “B” libraries as compare to pool “A” libraries hence these three genes may leads skin cancer. It reveals that THRSP gene located on chromosome 11 and with start at 77774906 and end that 77775368. The gene ADH1B located at chromosome number 4 and with start 100226122 and end at their 100242556 position. However, the positions of AW078632 were not available at database. Our study conclude that data generated by using insilico gene mining tools like SAGE analysis provide a starting point for investigation aimed to delineating the molecular bases of disease....
Background\nSkin cancer is the most common malignancy in the white population worldwide. In Brazil, the National Cancer Institute (INCA) estimates that in 2010 there will be 119,780 and 5,930 new cases of non-melanoma skin cancer and melanoma, respectively. The aim of this study was to evaluate the use of a mobile unit in the diagnosis and treatment of skin cancer in several poor regions of Brazil.\n\nMethods\nThe diagnosis of skin cancer was accomplished through active medical screening in the prevention Mobile Unit (MU) of Barretos Cancer Hospital (BCH). The study population consisted of patients examined in the MU between 2004 and 2007, and their suspicious lesions were subjected to histopathological evaluation. Data were collected prospectively from standardized forms and analyzed.\n\nResults\nDuring the screening, 17,857 consultations were carried out. A total of 2012 (11.2%) cases of skin cancer were diagnosed. The predominant histological type reported was basal cell carcinoma (n = 1,642 or 81.6%), followed by squamous cell carcinoma (n = 303 or 15.1%), Bowen's disease (n = 25 or 1.2%), malignant melanoma (n = 23 or 1.1%), basosquamous cell carcinoma (n = 3 or 0.1%), miscellaneous lesions (12 or 0.6%), and metatypical carcinoma (n = 4 or 0.2%). Only 0.6% of lesions were stage III. There were no stage IV non-melanoma skin lesions, as well as no melanomas stages III and IV, found.\n\nConclusions\nIt was observed that the MU can be a useful tool for early skin cancer diagnosis and treatment. This program probably is important, especially in developing countries with inadequate public health systems and social inequality....
Introduction. Tattoos have increasingly become accepted by mainstream Western society. As a result, the incidence of tattoo-associated dermatoses is on the rise. The presence of a poorly differentiated squamous cell carcinoma in an old tattooed skin is of interest as it has not been previously documented. Case Presentation. A 79-year-old white homeless man of European descent presented to the dermatology clinic with a painless raised nodule on his left forearm arising in a tattooed area. A biopsy of the lesion revealed a poorly differentiated squamous cell carcinoma infiltrating into a tattoo. The lesion was completely excised and the patient remains disease-free one year later. Conclusion. All previous reports of squamous cell carcinomas arising in tattoos have been well-differentiated low-grade type or keratoacanthoma-type and are considered to be coincidental rather than related to any carcinogenic effect of the tattoo pigments. Tattoo-associated poorly differentiated invasive carcinoma appears to be extremely rare....
We report the case of a 41-year-old female showing severe hair loss approximately 90% after the use of a hair dye. These symptoms developed six days after the use of a hair dye containing PPD. A patch test showed a (++) reaction at 48?h to 1% PPD in petrolatum, whereas all metals and white petrolatum were negative. She was therefore diagnosed with contact dermatitis due to PPD, resulting in hair loss. The skin lesions gradually improved after starting treatment with the systemic corticosteroids. The possibility that allergic contact dermatitis from hair dyes may be responsible for telogen effluvium should always be considered in a patient with increased hair loss....
Introduction\nSystemic reactions to inhaled drugs are rare. To the best of our knowledge, we report the first case of generalized itching related to the use of tiotropium bromide, a long acting inhaled anti-cholinergic agent commonly used to treat chronic obstructive pulmonary disease. \n\nCase presentation\nA 78-year-old Caucasian woman was referred to our facility for allergological evaluation. Our patient had been treated twice with tiotropium for chronic obstructive pulmonary disease and had experienced an allergic reaction with itching. We performed a double-blind placebo-controlled inhalation challenge for our patient with tiotropium and a placebo. Inhalation tests yielded positive results for tiotropium and negative results for the placebo. The results of a skin prick test with tiotropium were negative. \n\nConclusions\nThese findings reveal that tiotropium may elicit immediate skin allergic reactions. The negative result from the skin test suggests that such a reaction is not immunoglobulin E-mediated....
Background\nSkin diseases are underestimated and overlooked by most clinicians despite being common in clinical practice. Many patients are hospitalized with co-existing dermatological conditions which may not be detected and managed by the attending physicians. The objective of this study was to determine the burden of co-existing and overlooked dermatological disorders among patients admitted to medical wards of Muhimbili National hospital in Dar es Salaam.\n\nStudy design and settings\nA hospital-based descriptive cross-sectional study conducted at Muhimbili National hospital in Dar es Salaam, Tanzania.\n\nMethods\nPatients were consecutively recruited from the medical wards. Detailed interview to obtain clinico-demographic characteristics was followed by a complete physical examination. Dermatological diagnoses were made mainly clinically. Appropriate confirmatory laboratory investigations were performed where necessary. Data was analyzed using the 'Statistical Package for Social Sciences' (SPSS) program version 10.0. A p-value of < 0.5 was statistically significant.\n\nResults\nThree hundred and ninety patients admitted to medical wards were enrolled into the study of whom, 221(56.7%) were females. The mean age was 36.7 �± 17.9 (range 7-84 years). Overall, 232/390 patients (59.5%) had co-existing dermatological disorders with 49% (191/390) having one, 9% (36/390) two and 5 patients (1%) three. A wide range of co-existing skin diseases was encountered, the most diverse being non-infectious conditions which together accounted for 36.4% (142/390) while infectious dermatoses accounted for 31.5% (123/390). The leading infectious skin diseases were superficial fungal infections accounting for 18%. Pruritic papular eruption of HIV/AIDS (PPE) and seborrheic eczema were the most common non-infectious conditions, each accounting for 4.3%. Of the 232/390 patients with dermatological disorders, 191/232 (82.3%) and 154/232 (66.3%) had been overlooked by their referring and admitting doctors respectively.\n\nConclusion\nDermatological disorders are common among patients admitted to medical wards and many are not detected by their referring or admitting physicians. Basic dermatological education should be emphasized to improve knowledge and awareness among clinicians....
Loading....