Urology Case Reports (Jan 2022)

Collision metastasis: Renal cell carcinoma and prostatic adenocarcinoma to a retroperitoneal lymph node

  • Madison Morton,
  • Nivin Omar,
  • Rabii Madi,
  • Martha Terris,
  • Matthew Powell

Journal volume & issue
Vol. 40
p. 101884

Abstract

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Prostatic adenocarcinoma and renal cell carcinoma (RCC) can coexist. However, the incidence of collision metastasis of both prostatic adenocarcinoma and RCC is a rare phenomenon. A 50-year-old non-smoker male with end stage renal disease and a history of prostate adenocarcinoma was noted to have a left renal mass in the upper pole during CT surveillance. With the use of immunohistochemical stains the collision of two distinct malignancies from two different topographical regions was elucidated in a retroperitoneal lymph node. We report the second known case of collision metastasis of RCC and prostatic adenocarcinoma to a retroperitoneal lymph node.

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