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Systemic sclerosis, an autoimmune disease characterized by fibrosis and vasculopathy of the skin and other multiple organs has been associated with an increased risk of malignancy. We present the case of a 74‐year‐old woman who had diffused cutaneous systemic sclerosis and uterine cervical cancer. The patient was initially diagnosed with stage IIB squamous cell carcinoma and concurrent chemoradiotherapy was planned. However, cisplatin could not be administered due to acute renal failure, so the patient was treated solely with radiotherapy. However, complications of systemic sclerosis progressed rapidly, and the patient died 63 days later from pulmonary edema. An autopsy later revealed that uterine cervix had primary signet ring cell carcinoma. We suspected that this patient had a combination of signet ring cell carcinoma and squamous cell carcinoma, with squamous cell carcinoma disappearing after radiotherapy. This case highlighted the importance of systemic management for cancers associated with systemic sclerosis. [ABSTRACT FROM AUTHOR]