Syringomas are common appendageal tumors of intraepidermal eccrine ducts.

摘要汗管为常见之皮肤附属器官肿，于下眼皮及双颊。

Histopathologically, intraepidermal acantholysis is located at the granular layer in PF and suprabasally in PV.

理上，落叶性天疱层内棘层松解位于颗粒细胞层里，而寻常性天疱则位在基底层之上。