S10C12P10-1: The firbosing changes, at the interface between the reticular dermis and the subcutaneous fat in a lesion of morphea, has retinacular qualities. The fibrosis is band-like In lesions of this type, the fibrosis often extends along fibrous septa into the fat. In a sense, the fibrosing reaction qualifies as a variation of a fibrosing, septal panniculitis. In this example, the fibrosis is relatively confined to the interface between the reticular dermis and the subcutaneous fat (blue arrows) (morphea).

S10C12P10-3: In this late lesion, the distinctive fibrous tissue is relatively acellular and hyalinized. It is poorly vascularized. The interface with the fat at the bottom of the field is straight (morphea). Lesions of morphea, with extensive septal components, qualify as morphea profundus.