[Metastatic solid pseudopapillary tumor in the perinephric fat without a primary identified focus]. / Metastaz solidnoi psevdopapillyarnoi opukholi v paranefral'nuyu kletchatku bez pervichno vyyavlennogo ochaga.

Solid pseudopapillary tumor of the pancreas is an extremely rare neoplasm of the exocrine portion of this organ, which affects mostly young women and is characterized by a low malignancy potential and a relatively benign clinical course. According to the literature, even in disease progression as metastases, the overall 5-year survival rate is more than 95%. The paper describes a clinical case of a female patient with a solid pseudopapillary pancreatic tumor regarded as a metastatic neoplasm in the retroperitoneal space after surgical treatment previously performed in 2001.