SUMMARY This paper describes the clinical and histopathological features in ten cases of spontaneously involuting plane warts. In all, rapid regression occurred after the sudden development of an inflammatory reaction. At an early stage a degenerative change appears in the upper epidermis and the typic features of the warts are masked. At the height of the reaction an intense mononuclear cell infiltrate in the dermis associated with epidermal spongiosis, exocytosis cell necrosis and focal parakeratosis is found. It is suggested that the development of cell mediated immunity may be responsible for spontaneous involution of warts.

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Cases of cutaneous amyloidosis which exhibit poikiloderma-like skin changes are extremely rare. There are at least two clinical forms of poikiloderma-like cutaneous amyloidosis (PCA): (1) the ordinary type, and (2) PCA syndrome. The PCA syndrome includes poikilodermatous skin manifestations which may appear early in life and lichenoid papules, both with cutaneous amyloid deposits, frequently associated with light sensitivity and short stature, occasionally with palmoplantar keratosis and blister formation. We carried out an examination of a 5-year-old girl who was compatible with the syndrome.

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