BACKGROUND. The coexistence of systemic sclerosis and cancer has been
recognized with increasing frequency. However, squamous cell carcinoma
of the skin associated with systemic sclerosis is relatively rare. OB
JECTIVE. The mechanisms of malignancy in systemic sclerosis are discus
sed. METHODS. An 18-year-old girl with progressive systemic sclerosis
is described.RESULTS. The patient had developed squamous cell carcinom
a of the skin on the sclerosed skin of her left leg requiring amputati
on. The tumor recurred on the distal end of the stump. Local radiother
apy was unsuccessful. CONCLUSION. This report suggests that sclerosis
of the skin may manifest a greater risk of developing skin cancers unr
elated to chronic injury or scarring of the skin. (C) 1998 by the Amer
ican Society for Dermatologic Surgery, Inc.