Dermatopathology is both exciting and exasperating. tum corneum cells. This occurs in disorders of keratiniza Skin has an elegant simplicity in its functions yet a tion because the process of desquamation is disturbed (Figure 1. 1). ferocious complexity in its structure. This is one of the paradoxes that underly the pathology of skin disease Parakeratosis. The presence of nucleated horn cells in and may go some way in explaining the multitudinous the stratum corneum. Normally the horn cells (corneocy disorders to which the skin is subject. The ready visibility tes) are thin lamellae of less...