頁籤選單縮合
題 名 | Trichilemmal Keratosis Manifesting as a Cutaneous Horn=以皮角表現之外毛根鞘角化症 |
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作 者 | 林鳳玲; 許哲豪; | 書刊名 | 中華皮膚科醫學雜誌 |
卷 期 | 27:4 2009.12[民98.12] |
頁 次 | 頁254-256 |
關鍵詞 | |
語 文 | 英文(English) |
英文摘要 | CASE REPORT A 45-year-old man presented with an asymptomatic, slowly growing, keratotic nodule on his left fl ank for one year. Physical examination revealed a pea-sized, horn-like plaque protruding from a brownish nodule (Fig. 1 A, B). The tumor had been present for years as a cyst-like lesion before, but the tumor ruptured 1 year before this consultation. Later, a horn-like structure developed on the center of it. The lesion was excised en bloc under the impression of keratoacanthoma. Sections showed a cup-shaped epidermal proliferation with overlying compact hyperkeratosis and focal parakeratosis (Fig 2). The epithelium invaginates into dermis and form connecting lobules. Palisading basal cells were seen at the peripheral of the lobules (Fig. 3). The epithelium were composed of pale keratinocytes that transform into a keratinized layer without a granular layer formation (Fig. 4). There is a clear distinction between trichilemmal keratinization and epidermoid keratinization of the perilesional skin. Vascular dilatation and chronic infl ammatory cell infi ltrations are noted in the dermis. The CD34 staining in this case shows positive in the peripheral cells of the lesion (Fig. 5). |
本系統中英文摘要資訊取自各篇刊載內容。