Functional Histopathology of Keloid Disease

The document reviewed the histopathology of keloid disease, a condition characterized by excessive scarring that is unique to humans and can cause significant aesthetic and functional issues. It highlighted the challenges in clinical diagnosis due to its heterogeneous phenotype and similarities to other conditions like hypertrophic scarring and scleroderma. Key histological features of keloids included a tongue-like advancing edge in the papillary dermis, a thickened epidermis, and disorganized collagen bundles. The study noted differences in collagen ratios and protein expressions compared to healthy skin. It also discussed the roles of inflammation, hypoxia, and tension in keloid pathology and identified gaps in the literature that needed further research.