Proximal nail fold-lunula double punch technique: A less invasive method for sampling nail matrix without nail avulsion

In general, malignant lesions may be clinically distinguish from other benign lesions by using other devices such as dermoscopy, clinicians can choose more invasive and conventional technique to the doubtful cases. [...] our less invasive technique could be widely applicable to various benign nail disorders especially involving the nail matrix, like twenty-nail dystrophy and median nail dystrophy, and it can provide histopathologic information of whole nail tissues.