Template:Keloid versus hypertrophic scar

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Keloid versus hypertrophic scar - Typical findings
Keloid Hypertrophic scar
Histopathology of a keloid.jpg Histopathology of a hypertrophic scar, medium magnification.jpg
Flattening of the overlying epidermis No Yes
Scarring of the papillary dermis No Yes
Collagen Thick hyalinized bundles Whorl-like or nodular arrangements
Vertically oriented blood vessels Yes No
Prominent disarray of fibrous fascicles/nodules Yes No
Tongue-like advancing edge underneath normal-appearing epidermis and papillary dermis Yes No
Horizontal cellular fibrous band in the upper reticular dermis Yes No
Prominent fascia-like fibrous band Yes No