an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis)
造句
The histopathologic examination revealed dilatation of intracorneal eccrine ducts with mild focal hyperkeratosis and acanthosis. 病理檢查為表皮層有擴張的汗管伴隨局部過度角化和棘層肥厚。