We report a 54-year-old man with squamous cell carcinoma arising from pressuresore scar on the left trochanter which has been occurred 20 years earlier by the sedative therapy for schizophrenia. Comparing with burn scar carcinomas, pressure-sore scar carcinomas are characterized by a shorter latency period and a fulminant clinical course with a very high metastatic rate. It may be due to the additional irritative factor of pressure to the scar, having chronic base disease, poor nutrition and immunity, and easy invasion of tumor cells to bone tissue.
