Basal cell carcinoma

...In addition, a group of diseases that are likely to develop into cancer, such as intraepidermal carcinoma, arsenic keratosis, leukoplakia, and xeroderma pigmentosum, are called precancerous conditions, and can also result from these.
[basal cell carcinoma]
It is as common as squamous cell carcinoma, and is most common in people aged 40 to 60. 80% of cases occur on the face, coinciding with the fetal facial cleft line, around the eyelids and nose.

*Some of the terminology that refers to "basal cell carcinoma" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…また，表皮内癌や，ヒ素角化症，白板症，色素性乾皮症など癌にかわりやすい一群の疾患を癌前駆症といい，これらから生ずることもある。
［基底細胞癌basal cell carcinoma］
　有棘細胞癌とともに頻度の高いもので，40歳から60歳代に多い。80％は顔面に生じ，胎生期の顔裂線に一致して，眼瞼や鼻の周囲にみられる。…

※「basal cell carcinoma」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報