Morphea

LEGEND

Sclerosing inflammatory disorder of the dermis extending into the hypodermis

Atrophic epidermis

Hyalinization of the papillary and reticular dermis (becomes hyalinized, meaning pink and uniform)

Thickening of collagen fibers

Eccrine glands appear more superficially located in the dermis due to sclerosis extending into the hypodermis

Biopsy specimen appears square-shaped due to the abundance of thick and rigid collagen fibers (also known as squared-off edges)

  • Entrapment of eccrine glands by sclerotic and rigid collagen fibers

Morphea

LEGEND

  • Collagen fibers become sclerotic, thickened, and rigid

  • Entrapment of eccrine glands

Morphea

LEGEND

  • Collagen fibers become sclerotic, thickened, and rigid

  • Entrapment of eccrine glands

Morphea

LEGEND

  • Sclerosis of collagen fibers extending into the hypodermis, leading to thickening of fat lobule septa

  • Considered a form of septal panniculitis

Morphea

LEGEND

Superficial and deep perivascular infiltrate of lymphocytes and plasma cells

  • Perivascular collections of lymphocytes and plasma cells at the dermal-hypodermal junction

Morphea

LEGEND

As morphea plaques evolve, inflammation decreases, while sclerosis increases, potentially progressing to involve the hypodermis.

  • Plasma cells are present within the inflammatory infiltrate