Actinic keratosis (Q43975): Difference between revisions
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Ceratoses actínicas (CA) são áreas focais de proliferação e diferenciação anormais de queratinócitos induzidas por exposição crônica à radiação ultravioleta. São muito comuns em área exposta ao sol de indivíduos de pele clara que tiveram exposição excessiva à luz solar. Inicialmente pápulas escamosas planas, podem se tornar significativamente elevadas em relação à superfície da pele pela produção de queratina aderente densa ou como resultado de proliferação celular desregulada que pode progredir para franco carcinoma in situ ou carcinoma espinocelular invasivo. | |||
| description / en | description / en | ||
Actinic keratoses (AKs) are focal areas of abnormal keratinocyte proliferation and differentiation induced by chronic exposure to ultraviolet radiation. They are very common on sun-exposed skin of fair-skinned individuals who have had excessive exposure to sunlight. Initially flat scaly papules, they may become significantly elevated from the skin surface by producing dense adherent keratin or as a result of unregulated cellular proliferation which may progress to frank carcinoma in situ or invasive squamous cell carcinoma. | |||
Revision as of 11:13, 13 August 2026
Actinic keratoses (AKs) are focal areas of abnormal keratinocyte proliferation and differentiation induced by chronic exposure to ultraviolet radiation. They are very common on sun-exposed skin of fair-skinned individuals who have had excessive exposure to sunlight. Initially flat scaly papules, they may become significantly elevated from the skin surface by producing dense adherent keratin or as a result of unregulated cellular proliferation which may progress to frank carcinoma in situ or invasive squamous cell carcinoma.
| Language | Label | Description | Also known as |
|---|---|---|---|
| default for all languages | EK90.0 |
||
| English | Actinic keratosis |
Actinic keratoses (AKs) are focal areas of abnormal keratinocyte proliferation and differentiation induced by chronic exposure to ultraviolet radiation. They are very common on sun-exposed skin of fair-skinned individuals who have had excessive exposure to sunlight. Initially flat scaly papules, they may become significantly elevated from the skin surface by producing dense adherent keratin or as a result of unregulated cellular proliferation which may progress to frank carcinoma in situ or invasive squamous cell carcinoma. |
