Retroperitoneal undifferentiated pleomorphic sarcoma with total nephrectomy: a case report and literature review.

Front Surg · 2023 · PMC10308313 · PMID 37396292

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an increasing trendno p-value reported

The incidence of the disease is extremely low, but there is an increasing trend year by year, with only three cases per 100,000 in 2013 ( 14 ) and three cases per 45,000 to date ( 15 ).

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