Clinico-dermatoscopic study of seborrheic keratosis from a rural tertiary care centre of western India

Abstract

Background: Seborrheic keratosis is a benign papilloma of the skin having different clinical variants. A dermatoscope is used to reach to the correct diagnosis without going for any interventional investigation like biopsy, thus the study was done to correlate clinical and dermatoscopic findings in seborrheic keratosis. Material and Methods: It was an observational study conducted after permission from ethics committee. Patients diagnosed clinically as seborrheic keratosis were enrolled over a period of 6 months. Detail history and examination were done based on pre-structured proforma. Dermatoscopy was done from randomly selected lesions and images were captured and stored in laptop. Descriptive statistics was calculated for patterns of various changes. Results: Total 51 patients were clinically diagnosed as seborrheic keratosis, with maximum in the age ranging from 51 to 70 years. Sex ratio was equal with positive family history in 68.6%. Total 298 lesions were found of which, maximum were on the face in 56.37%. Commonest variant seen was CSK in 50.67% lesions. Comedone like opening was the most common dermoscopic pattern in 66.44% lesions followed by sharp demarcation in 55.70% and fissures and ridges in 53.69% lesions. Conclusion: Seborrheic keratosis was more commonly seen in elderly, with CSK as commonest variant and comedone like opening as most common dermatoscopic pattern in our study.

Keywords

• comedone like opening
• dermatosis papulosa nigra
• milia like cyst
• seborrheic keratosis