The effect of a dermoscopy training programme on diagnostic accuracy and management decisions regarding pigmented skin lesions: a comparison between dermal therapists and general practitioners.

BACKGROUND: Dermoscopy is known to increase the diagnostic accuracy of pigmented skin lesions (PSLs) when used by trained professionals. The effect of dermoscopy training on the diagnostic ability of dermal therapists (DTs) has not been studied so far. OBJECTIVES: This study aimed to investigate whether DTs, in comparison with general practitioners (GPs), benefited from a training programme including dermoscopy, in both their ability to differentiate between different forms of PSL and to assign the correct therapeutic strategy. METHODS: In total, 24 DTs and 96 GPs attended a training programme on PSLs. Diagnostic skills as well as therapeutic strategy were assessed, prior to the training (pretest) and after the training (post-test) using clinical images alone, as well as after the addition of dermatoscopic images (integrated post-test). Bayesian hypothesis testing was used to determine statistical significance of differences between pretest, post-test and integrated post-test scores. RESULTS: Both the DTs and the GPs demonstrated benefit from the training: at the integrated post-test, the median proportion of correctly diagnosed PSLs was 73% (range 30-90) for GPs and 63% (range 27-80) for DTs. A statistically significant difference between pretest results and integrated test results was seen, with a Bayes factor > 100. At 12 percentage points higher, the GPs outperformed DTs in the accuracy of detecting PSLs. CONCLUSIONS: The study shows that a training programme focusing on PSLs while including dermoscopy positively impacts detection of PSLs by DTs and GPs. This training programme could form an integral part of the training of DTs in screening procedures, although additional research is needed.

Utility of Dermoscopy Training in Improving Diagnostic Accuracy of Skin Lesions Among Physician Assistant Students.

INTRODUCTION: Patients often first present to their primary care provider for skin lesion concerns, and dermoscopy is a tool that enhances diagnostic acumen of both malignant and benign skin lesions. Physician assistants (PAs) frequently serve as primary care and dermatology providers, but to our knowledge, no current research on dermoscopy expertise with PAs exists. We hypothesize that PA students could be taught dermoscopy based on the triage amalgamated dermoscopic algorithm (TADA) to increase their diagnostic skill, as previously shown with medical students. METHODS: Dermoscopy was taught to first-year PA students at all 5 PA programs in the state of Minnesota. The training was 50 minutes in length and focused on the fundamentals of the TADA method. Physician assistant students participated in a pretraining and post-training test, consisting of 30 dermoscopic images. RESULTS: A total of 139/151 (92%) PA students completed both the pretraining and post-training tests. Overall, mean scores for all students increased significantly ( P < .0001) after dermoscopy training was given (18.5 ± 7.1 vs. 23.8 ± 6.7). CONCLUSION: Our study demonstrates that after TADA training, PA students improved their ability to assess dermoscopy images of both skin cancer and benign lesions accurately, suggesting that PAs can be trained as novice dermoscopists and provide better dermatologic care to patients. We strongly encourage integration of dermoscopy into didactic education across PA programs. Implementing a dermoscopy curriculum in established PA programs will enable future PAs to provide better clinical care when evaluating skin lesions.

Dermoscopy Proficiency Expectations for US Dermatology Resident Physicians: Results of a Modified Delphi Survey of Pigmented Lesion Experts.

Importance: Dermoscopy education in US dermatology residency programs varies widely, and there is currently no existing expert consensus identifying what is most important for resident physicians to know. Objectives: To identify consensus-based learning constructs representing an appropriate foundational proficiency in dermoscopic image interpretation for dermatology resident physicians, including dermoscopic diagnoses, associated features, and representative teaching images. Defining these foundational proficiency learning constructs will facilitate further skill development in dermoscopic image interpretation to help residents achieve clinical proficiency. Design, Setting, and Participants: A 2-phase modified Delphi surveying technique was used to identify resident learning constructs in 3 sequential sets of surveys-diagnoses, features, and images. Expert panelists were recruited through an email distributed to the 32 members of the Pigmented Lesion Subcommittee of the Melanoma Prevention Working Group. Twenty-six (81%) opted to participate. Surveys were distributed using RedCAP software. Main Outcomes and Measures: Consensus on diagnoses, associated dermoscopic features, and representative teaching images reflective of a foundational proficiency in dermoscopic image interpretation for US dermatology resident physicians. Results: Twenty-six pigmented lesion and dermoscopy specialists completed 8 rounds of surveys, with 100% (26/26) response rate in all rounds. A final list of 32 diagnoses and 116 associated dermoscopic features was generated. Three hundred seventy-eight representative teaching images reached consensus with panelists. Conclusions and Relevance: Consensus achieved in this modified Delphi process identified common dermoscopic diagnoses, associated features, and representative teaching images reflective of a foundational proficiency in dermoscopic image interpretation for dermatology residency training. This list of validated objectives provides a consensus-based foundation of key learning points in dermoscopy to help resident physicians achieve clinical proficiency in dermoscopic image interpretation.

Diagnostic effectiveness of dermoscopy performed by plastic surgery registrars trained in melanoma diagnosis.

BACKGROUND: Dermoscopy improves sensitivity and specificity and helps in the early detection of melanoma and nonmelanoma skin cancers (NMSC). Because of the multidisciplinary approach to melanoma, plastic surgeons may be required to perform dermoscopy evaluation. For this reason, in some university hospitals, plastic surgeons in training might perform these evaluations. To assess the validity of digital dermoscopy conducted by plastic surgery registrars, the authors collected the diagnoses of excised lesions from a dermoscopy outpatient clinic, comparing results with literature. METHODS: A total of 1094 consecutive dermoscopy evaluations performed at Padova University Hospital between 2015 and 2018 were included in the study. All examinations were carried out by 3 plastic surgery registrars who received comparable training on dermoscopy. Excised lesions were classified according to pathological reports. RESULTS: Four hundred sixty-six lesions were excised, and of them, 224 (48%) were considered pathological or atypical lesions: 34 melanomas (15%), 83 dysplastic or uncertain significance nevi (37%), and 107 NMSC and their precursors (48%). Considering only the 347 pigmented lesions, 34% were malignant or dysplastic lesions. The number needed to treat (NNT) was 10. The nevi-to-melanoma ratio (NMR) was 8, and the malignant melanoma-to-melanoma in situ ratio (MM:MMIS ratio) was 0.36. CONCLUSIONS: This retrospective study tested the performance of specifically trained plastic surgery registrars in the detection of malignant skin lesions. Compared to literature, the analysis reflects a good sensibility for melanoma, especially in early curable stages. Moreover, our study underlines quite a high number of total excisions, which could be explained by the "surgical imprinting" of plastic surgery registrars.

Using content-based image retrieval of dermoscopic images for interpretation and education: A pilot study.

BACKGROUND: Dermoscopic content-based image retrieval (CBIR) systems provide a set of visually similar dermoscopic (magnified and illuminated) skin images with a pathology-confirmed diagnosis for a given dermoscopic query image of a skin lesion. Although recent advances in machine learning have spurred novel CBIR algorithms, we have few insights into how end users interact with CBIRs and to what extent CBIRs can be useful for education and image interpretation. MATERIALS AND METHODS: We developed an interactive user interface for a CBIR system with dermoscopic images as a decision support tool and investigated users' interactions and decisions with the system. We performed a pilot experiment with 14 non-medically trained users for a given set of annotated dermoscopic images. RESULTS: Our pilot showed that the number of correct classifications and users' confidence levels significantly increased with the CBIR interface compared with a non-CBIR interface, although the timing also increased significantly. The users found the CBIR interface of high educational value, engaging and easy to use. CONCLUSION: Overall, users became more accurate, found the CBIR approach provided a useful decision aid, and had educational value for learning about skin conditions.

General practice registrars' use of dermoscopy: Prevalence, associations and influence on diagnosis and confidence.

BACKGROUND AND OBJECTIVES: Dermoscopy increases accuracy for melanoma diagnosis by trained primary care physicians. We aimed to establish prevalence of dermatoscope use by general practice registrars, and identify factors associated with dermatoscope use and the implications of dermatoscope use for diagnosis and confidence in diagnosis. METHOD: This was a cross-sectional study nested within the Registrar Clinical Encounters in Training (ReCEnT) project, an ongoing multi-site cohort study of general practice registrars' consultations. The study was conducted during two six-monthly rounds of ReCEnT data collection in four regional training providers in 2014. RESULTS: Forty-nine per cent of registrars reported having dermoscopy training. Dermoscopy was used in 61% of consultations involving skin or pigmented lesion checks. Dermatoscope use changed provisional diagnosis in 22% of instances and increased diagnostic confidence in 55%. DISCUSSION: Dermoscopy is performed by general practice registrars in a modest proportion of skin and pigmented lesion checks. Its use influences registrars' diagnoses and increases their confidence in their diagnoses.

Smartphone wallpapers for dermoscopy training in medical students and residents.

BACKGROUND: Several dermoscopy training programs have found the accuracy of dermoscopy examination depends on adequate training of practitioners. Smartphones are readily available and time-efficient tools for dermoscopy training. AIM: To evaluate the learning efficacy of utilizing dermoscopy smartphone wallpapers to train medical students, PGY (postgraduate year)-1 trainees, and junior dermatological residents without prior dermoscopy training. METHODS: We designed smartphone wallpapers with dermoscopy pictures and features of several common melanocytic and nonmelanocytic conditions. Pretests and posttests were performed before and after a 10-day-long smartphone wallpaper training program to evaluate their diagnostic accuracy using dermoscopy images. RESULTS: Significant progressions were noted between the pretest and posttest scores both in the nonmelanocytic (P < 0.001) and the melanocytic (P = 0.003) sections. Medical students and PGY-1 trainees demonstrated more significant improvement in nonmelanocytic lesions, compared to dermatology residents. Residents of dermatology showed more progression in the melanocytic section than nonresidents. LIMITATIONS: There were limited participants. The frequency and time allotted by each participant in perusing the wallpapers were variable. Further study of the application on clinical practice is still needed. CONCLUSION: Smartphone wallpapers training improves dermoscopic interpretation significantly in medical students, PGY-1 trainees, and dermatological residents. The background knowledge of dermatology has an effect on the degree of improvement in the training course.

Teaching Benign Skin Lesions as a Strategy to Improve the Triage Amalgamated Dermoscopic Algorithm (TADA).

INTRODUCTION: Dermoscopy aids family physicians (FPs) in skin cancer detection. The triage amalgamated dermoscopic algorithm (TADA) was created to simplify the dermoscopic evaluation of a skin growth. The purpose of this image-based study was to evaluate the effect of teaching the clinical and dermoscopic features of benign skin lesions on the diagnostic accuracy of skin cancer identification using TADA. We also sought to determine the best method to teach benign neoplasms. METHODS: In this cross-sectional study of an educational intervention, FPs participated in dermoscopy training. Participants were divided into 3 groups for teaching of common benign neoplasms (dermatofibroma, angioma, and seborrheic keratosis/lentigo): didactic + interactive, didactic + heuristic, and didactic. For each group, the benign teaching was followed by skin cancer identification training with TADA. All participants took a 30 image pre-test and 30 image post-test. RESULTS: Fifty-nine participants completed the study. The mean preintervention score (out of 30 correct responses) was 17.9 (SD, 4.5) and increased to 23.5 (SD, 3.0) on the postintervention evaluation (P < .001). Sensitivity for skin cancer increased from 62.5% to 88.1% following the intervention. Postintervention specificity for skin cancer was 87.8%. Sensitivity and specificity increased following the intervention for all 3 types of benign neoplasms. Diagnostic accuracy was not impacted by the method of benign teaching. CONCLUSION: Short dermoscopy training sessions with dedicated time for benign growths followed by TADA training for malignant growths are an effective means of teaching FPs dermoscopy and result in a high sensitivity and specificity for the identification of benign and malignant skin neoplasms.

The status of dermoscopy in Germany - results of the cross-sectional Pan-Euro-Dermoscopy Study.

BACKGROUND: Survey on the current status of dermoscopy in Germany. METHODS: In the context of a pan-European internet-based study (n = 7,480) conducted by the International Dermoscopy Society, 880 German dermatologists were asked to answer questions with respect to their level of training as well as their use and perceived benefit of dermoscopy. RESULTS: Seven hundred and sixty-two (86.6 %) participants practiced dermatology in a publicly funded health care setting; 98.4 % used a dermoscope in routine clinical practice. About 93 % (n = 814) stated to have had more than five years of experience in the use of dermoscopy. Dermoscopy was considered useful in the diagnosis of melanoma by 93.6 % (n = 824); for pigmented skin tumors, by 92.4 % (n = 813); in the follow-up of melanocytic lesions, by 88.6 % (n = 780); for non-pigmented lesions, by 71.4 % (n = 628), in the follow-up of non-melanocytic lesions, by 52.7 % (n = 464); and for inflammatory skin lesions, by 28.5 % (n = 251). Overall, 86.5 % (n = 761) of participants felt that - compared to naked-eye examination - dermoscopy increased the number of melanomas diagnosed; 77,7 % (n = 684) considered the number of unnecessary excisions of benign lesions to be decreased. Participants who personally felt that dermoscopy improved their ability to diagnose melanoma were significantly i) younger, ii) had been practicing dermatology for a shorter period of time, iii) were less commonly employed by an university-affiliated dermatology department, iv) were more frequently working in an office-based public health care setting, and v) had more frequently been trained in dermoscopy during their dermatology residency. CONCLUSIONS: The findings presented herein ought to be integrated into future residency and continuing medical education programs with the challenge to improve dermato-oncological care and to expand the diagnostic spectrum of dermoscopy to include inflammatory skin diseases.

Educational and practice gaps in the management of volar melanocytic lesions.

BACKGROUND: The benign and malignant patterns of acral melanocytic naevi (AMN) and acral melanomas (AM) have been defined in a series of retrospective studies. A three-step algorithm was developed to determine when to biopsy acral melanocytic lesions. This algorithm has only been applied to a Japanese population. OBJECTIVES: Our study aimed to review the current management strategy of acral melanocytic lesions and to investigate the utility of the three-step algorithm in a predominately Caucasian cohort. METHODS: A retrospective search of the pathology and image databases at Mayo Clinic was performed between the years 2006 and 2016. Only cases located on a volar surface with dermoscopic images were included. Two dermatologists reviewed all dermoscopic images and assigned a global dermoscopic pattern. Clinical and follow-up data were gathered by chart review. All lesions with known diameter and pathological diagnosis were used for the three-step algorithm. RESULTS: Regular fibrillar and ridge patterns were more likely to be biopsied (P = 0.01). The majority of AMN (58.1%) and AM (60%) biopsied were due to physician-deemed concerning dermoscopic patterns. 39.2% of these cases were parallel furrow, lattice-like or regular fibrillar. When patients were asked to follow-up within a 3- to 6-month period, only 16.7% of the patients returned within that interval. The three-step algorithm would have correctly identified four of five AM for biopsy, missing a 6 mm, multicomponent, invasive melanoma. CONCLUSION: We found one major educational gap in the recognition of low-risk lesions with high rates of biopsy of the fibrillary pattern. Recognizing low-risk dermoscopic patterns could reduce the rate of biopsy of AMN by 23.3%. We identified two major practice gaps, poor patient compliance with follow-up and the potential insensitivity of the three-step algorithm to small multicomponent acral melanocytic lesions.