Jisho

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にっこうかくかしょう 日光角化症
Noun
1. actinic keratosis; solar keratosis; senile keratosisMedicine
Wikipedia definition
2. Actinic keratosisActinic keratosis (also called "solar keratosis" and "senile keratosis") is a premalignant condition of thick, scaly, or crusty patches of skin. It is more common in fair-skinned people. It is associated with those who are frequently exposed to the sun, as it is usually accompanied by solar damage. Since some of these pre-cancers progress to squamous cell carcinoma, they should be treated. Untreated lesions have up to twenty percent risk of progression to squamous cell carcinoma.
Read “Actinic keratosis” on English Wikipedia
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Read “Actinic keratosis” on DBpedia

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