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石灰化表皮腫は1881年MalherbeおよびChenantaisにより"Epitheliome calcifie desglandes sebacees"と名付けられ,皮脂腺由来の腫瘍として報告せられたが,その後の研究によつて本症は毛母細胞から生じたもの,ないしは第1次上皮芽から毛への分化を示す腫瘍と考えられ,また石灰化が必発でない点からPilomatri-xomaの名称も与えられている。本邦では新妻6)らが,肥田,佐藤の本邦第1例以来の78例を集めて検討し,さらに丸山ら7)も18例を報告している。これらの報告によれば本症は20歳代の若年者に多く,上肢,顔面に多いとされているが,われわれは昭和42年以来4年間に本症14例を経験し,本症は乳幼児の顔面,ことに眉毛部,耳前部に好発するなど臨床的に興味深い所見を得たので,組織学的所見とともに文献的考察を加えて報告する。
Fourteen cases have been diagnosed as calcifying epithelioma in our hospital for 4 years from 1967. It started from one to 48 years of age-5 cases in infancy, 4 cases in childhood, and 5 cases in adult. They occured rather in younger age.
In 10 cases it was found on the face-4 on the eyebrow area, 5 around the ear-lobe, and 1 on the cheek. The others were 2 cases on the neck, 1 on the occipital region and 1 on the upper extremity. Thirteen cases showed only one lesion respectively, while one developed 2.
Courses of the disease were from 1 month to 10 years and more. Most of the cases showed the courses within 1 year.
Histologic pictures of all the cases were typical.
Clinical pictures presented slightly elevated, flat, from rice-grain-to walnut-sized, hard, sub-cutaneous tumors attached firmly to the skin. They required to he differentiated from wen and dermato-fibroma.
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