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164 Possible Causes for Orthokeratosis

  • Autosomal Recessive Congenital Ichthyosis ARCI5

    Light microscopy of skin biopsies revealed typical histopathologic features of ichthyosis, including hyperkeratosis or more extensive orthokeratosis, mild thickening of the[bio2rdf.org]

  • Angiokeratoma Circumscriptum

    Characteristic findings are: Hyperkeratosis (orthokeratosis or parakeratosis) Acanthosis Papillomatosis Thin-walled, dilated capillaries in the papillary dermis Occasionally[symptoma.com]

  • Necrobiotic Xanthogranuloma

    Histology of an erythematous flat papule on the arm revealed orthokeratosis, mild papillomatosis, hypergranulosis, and large vacuolated cells with grayish cytoplasm and vesicular[avensonline.org]

  • Diffuse Palmoplantar Keratoderma

    Histologic findings include orthokeratosis, normogranulosis, and a pronounced stratum lucidum without epidermolysis.[emedicine.medscape.com] Histologic findings include acanthosis, accentuation of the granular layer, and orthokeratosis; Langerhans cells are almost completely absent in the affected skin.[emedicine.medscape.com]

  • Erythrokeratoderma

    Skin biopsy showed epidermis with mild acanthosis, confluent parakeratosis interposed between orthokeratosis.[ijpd.in] A biopsy was performed that showed papillated epidermal hyperplasia, hypergranulosis, compact orthokeratosis, and focal parakeratosis.[the-medical-dictionary.com] Skin biopsy showed epidermis with acanthosis, papillomatosis, orthokeratosis, and parakeratosis with preserved granular layer.[ijpd.in]

  • Tinea Corporis

    Commonly described histologic 'clues' to the diagnosis of dermatophytosis include neutrophils in the stratum corneum and/or epidermis, compact orthokeratosis and identification[ncbi.nlm.nih.gov]

  • Tinea Capitis

    The stratum corneum may show compact orthokeratosis or sometimes the "sandwich sign": ortho- or parakeratosis alternating in layers with the normal basket-weave stratum corneum[dermpedia.org]

  • Epithelial Cyst

    […] cell reaction may be prominent Epithelial cell rests frequently in cyst wall May give rise to daughter cysts and dystrophic calcification Occasional findings Only focal orthokeratosis[surgpathcriteria.stanford.edu] (30-60%) Less recurrence if completely removed May take 5-10 years to recur Orthokeratotic odontogenic cyst Rare, about 1% of cysts As above but has a granular layer and orthokeratosis[surgpathcriteria.stanford.edu]

  • Subungual Fibroma

    Thickened collagen Hyperkeratosis and acanthosis Proliferating fibroblasts and capillaries Compact orthokeratosis Various images Polypoid dermal proliferation Prominent dense[pathologyoutlines.com] […] collagen in dermis is oriented predominantly in the vertical direction Stellate stromal cells may be present Covered by variably acanthotic epidermis with hyperkeratotic orthokeratosis[pathologyoutlines.com] Lacks adnexal structures Microscopic (histologic) images Images hosted on other servers: Dome shaped tumor Collagen fibers perpendicularly arranged Acanthosis and massive orthokeratosis[pathologyoutlines.com]

  • Bazex Syndrome

    Anatomopathological examination of the palmar region found hyperkeratosis with orthokeratosis and parakeratosis ( Figures 4 ).[scielo.br] Transgredient plantar hyperkeratosis FIGURE 3 constrictive bands on the fifth toe (pseudo-ainhum) FIGURE 4 Anatomopathological examination of the palmar region: Hyperkeratosis with orthokeratosis[scielo.br]

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