Rapid disease progression during adjuvant chemotherapy following concurrent chemoradiotherapy and radical resection for rectal sarcomatoid carcinoma: a case report and literature review
Rectal sarcomatoid carcinoma (RSC) is an exceedingly rare, aggressive malignancy characterized by a dismal prognosis, high recurrence rates, and truncated overall survival. Only 16 cases have been reported. Due to its rarity, optimal therapeutic strategies remain poorly understood. While current management typicall...