Lichen amyloidosis Bilder

Lichen amyloidosus: General view: Since several years slowly progressive findings with densely packed, skin-colored, 0.1 cm large, differently intense itching papules on the lower leg in a 34-year-old female patient.

Lichen amyloidosus: Itchy, non follicularly bound, coarse, occasionally excoriated, keratotic, yellowish-brownish, about 2 mm large papules.

Lichen amyloidosus. detail enlargement: densely standing, skin-coloured, pinhead-sized, itchy papules on sclerotic thickened surroundings.

Lichen amyloidosus, detail enlargement: Densely standing, skin-coloured, pinhead-sized, itchy papules on sclerotically altered surroundings.

Lichen amyloidosus. homogeneous eosinophilic material in the papilla tips, irregular acanthosis. enormous hyperkeratosis and parakeratosis.

Lichen amyloidosus. congo red staining. yellow-red staining of cloddy material in the papillary epidermis. when polarized, this material glows greenish.

Lichen amyloidosus. immunohistological imaging of cytokeratin. partly punctiform or linear, partly clumpy imaging of cytokeratin-positive structures (keratinamyloid) in the papillary dermis.

Lichen amyloidosus: Electron microscopy: Amyloid (A) deposited in small clusters between macrophages (M) subepidermally, immediately below the dermoepidermal basement membrane.

Lichen amyloidosus. electron microscopy: Subepidermal plaques of amyloid (A) in cutaneous amyloidosis, remains of the cell organelles in the amyloid, signs of the epidermal origin of this amyloid.