A young man presents with a three-year history of asymptomatic pale-yellow to flesh-coloured cysts on his chest, forearms and axillae. What are these cysts?
A 22-year-old man had a three-year history of an increasing number of asymptomatic pale-yellow to flesh-coloured cysts on his chest (Figure 1), forearms and axillae. There was no known family history of similar lesions. Skin biopsy revealed a collapsed cyst, which was lined by stratified squamous epithelium and had a cuticular lining and some prominent sebaceous glands in its wall (Figure 2).