Psoriasis, light micrograph

Psoriasis, light micrograph

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Caption: Psoriasis. Light micrograph of a section through a psoriasis pustule. Psoriasis is a chronic skin disease causing inflammation and scaly lesions. In this section the surface of the skin (stratum corneum) is at top. There is a parakeratotic layer with abnormal keratinisation and microabcesses (upper centre) immediately below the cornified layer. Beneath this, the stratum spinosum layer of the epidermis is greatly thickened (acanthosis). This is a major feature of psoriasis. The rete pegs (sections of epidermis that protrude into the dermis) and dermal papillae (sections of dermis that protrude into the epidermis) are elongated and pronounced.

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Keywords: acanthosis, biopsied, biopsy, cells, chronic, condition, cutaneous, cytology, dermal papillae, dermatitis, dermis, disease, disorder, epidermis, healthcare, histology, histopathological, histopathology, horizontal, inflamed, inflammation, light micrograph, lm, medical, medicine, microabcesses, parakeratotic, pathological, pathology, plaque, psoriasis, pustule, rete pegs, section, sectioned, skin, stained, stratum spinosum

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