Waste of skin in elliptical excision biopsy of non-melanomatous skin cancer.

Our objective was to quantify the skin wasted during elliptical excision biopsy. This is defined as the difference between the excised elliptical area and the area of the original lesion. We used geometrical calculations of 26 excisional biopsy specimens from patients with non-melanomatous malignant tumours.

The elastic properties of cancerous skin: Poisson's ratio and Young's modulus.

Background: The physical properties of cancerous skin tissue have rarely been measured in either fresh or frozen skin specimens. Of interest are the elastic properties associated with the skin's ability to deform, i.e.

Skin waste, vertex angle, and scar length in excisional biopsies: comparing five excision patterns--fusiform ellipse, fusiform circle, rhomboid, mosque, and S-shaped.

The common excision skin pattern is either a fusiform ellipse or another pattern with dissimilar length and width. The purpose of this study was to define the most advantageous skin pattern regarding skin waste, vertex angle, and scar length. Five skin excision patterns used traditionally for closure of round lesions were analyzed: fusiform ellipse, fusiform circle, rhomboid, mosque, and S-shaped.