Diagnosis of Skin Lesions Using Photographs Taken With a Mobile Phone: An Online Survey of Primary Care Physicians

Skin conditions are one of the most frequent reasons for visiting a primary health care facility, making it of vital importance that general practitioners (GPs) have the right knowledge and tools to diagnose the most frequent dermatological conditions. Methods: This study evaluates the accuracy of dermatological diagnoses made by 120 GPs based on photographs taken with a smartphone by an anonymous online cross-sectional survey. Results: The study was carried out between August and October 2018. The results show that the majority of the participants are in favor of using mobile phones to communicate with other professionals and use them to consult medical images. The majority (69%) took dermatological photographs and the preferred device was a smartphone (70%). From 22 different images evaluated, in 69% of responses, participants expressed a high degree of confidence in their ability to diagnose the lesion shown and in 72% of the cases, the diagnosis chosen was correct. Conclusions: The study confirms that the use of smartphone to send medical images is growing rapidly and its potential for taking medical images is an opportunity to help primary care teams deal with dermatological problems. The results suggest that GPs need further training in interpreting dermatological images, to increase their diagnostic confidence and to avoid the need for referrals to face-to-face visits.

[Diagnostic reliability of an asynchronous teledermatology consultation]

OBJECTIVE

To analyze the diagnostic agreement rate between primary care, an asynchronous teledermatology consultation, and a conventional dermatology consultation.

DESIGN

Prospective non-randomized concordance study.

SETTING

Dermatology Service in Hospital Son Llàtzer (Palma de Mallorca) and primary care centers of Sóller and Arenal (Mallorca).

PARTICIPANTS

Patients have been included from December 2005 to July 2008, sent by teleconsultation (n=158).

MAIN MEASUREMENTS

Analysis of primary care, teledermatology consultation and face-to-face consultation diagnosis, in mentioned period of time. Calculation of kappa index of concordance.

RESULTS

158 teleconsultations have been made from December 2005 to July 2008, 94 (59,5%) women, and 64 (40,5%) men, aged from 9 to 96 years old (average, 55 years old). After grouping the diagnosis in categories, the distribution was: 48 (37,2%) benign tumours, 39 (30,2%) inflammatory and appendages diseases, 15 (11,6%) infectious diseases, 14 (10,9%) malignant tumours, and 13 (10,1%) premalignant tumours. In grouped diagnosis, concordance was 59,8% (CI 95%, 50-70%) (P<.0001) for general practitioner and 94,7% (CI 95%, 90-99%) (P<.0001) for teledermatologist.

CONCLUSIONS

The main advantage of asynchronous teledermatology is the improvement of the quality triage, allowing the detection of malignant or suspicious lesions. However, we need more comparable studies on a larger scale to evaluate the disadvantages (photographic technique limitation, evaluation of other lesions, legal aspects, professional motivation...).