Search Results for: x-linked ichthyosis

Differential Diagnosis in Dermatopathology

Epidermolytic hyperkeratosis vs. Plane wart

…apes, e.g., (round, ellipsoid, and arcuate) (erythema chronicum migrans), pseudolymphomatous nodules (lymphadenosis benigna cutis), and acral patches and plaques that in time become atrophic (acrodermatitis chronica atrophicans). It may express…

Differential Diagnosis in Dermatopathology

Discussions

…a euphemism for verrucous squamous-cell carcinoma on the genitalia and, as the name suggests, is thought to arise in a pre-existing condyloma acuminatum. Carcinoma cuniculatum conceivably could arise in pre-existing mosaic warts and florid oral…

Differential Diagnosis in Dermatopathology

Discussions

…th rather than rough-surfaced because the stratum corneum is normal, and histopathologically they are papillomatoses, i.e., exaggerations of dermal papillae, rather than essentially keratoses. The velvety, tan to gray-brown excrescences of…

Differential Diagnosis in Dermatopathology

Nodular vasculitis vs. Subcutaneous polyarteritis nodosa

…apes, e.g., (round, ellipsoid, and arcuate) (erythema chronicum migrans), pseudolymphomatous nodules (lymphadenosis benigna cutis), and acral patches and plaques that in time become atrophic (acrodermatitis chronica atrophicans). It may express…

Differential Diagnosis in Dermatopathology

Discussions

…is no predilection for sex. Clinically, skin lesions often are cord-like bands, especially on the trunk, but also on the proximal part of upper extremities. Arthritis may precede the development of skin lesions of interstitial granulomatous…

Histologic Diagnosis of Inflammatory Skin Diseases

Incontinentia pigmenti

…pping for mutations in the Xp I I.21 or the Xq28 locus. Cause and mechanism This hereditary systemic disease is caused by an Xlinked genetic defect in loci Xp I I.21 or Xq28, which is dominant in females and usually lethal in males. The mechanism…