Collision metastasis of prostatic and colonic adenocarcinoma: report of 2 cases.

Wade, Zane K; Shippey, John E; Hamon, Gregory A; Smoak, Robert L; Argani, Pedram; Allsbrook, William C · Arch Pathol Lab Med · 2004

case_report · Level V

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Abstract

Collision metastases of carcinomas in lymph nodes are rare. Carcinoma metastasizing to lymph nodes containing malignant lymphoma has also been reported. The literature contains 3 cases of collision metastasis of prostatic and urothelial carcinoma. To our knowledge, we report the first 2 cases of collision metastasis of prostatic and colonic adenocarcinoma, one involving a mesenteric lymph node and the other involving a perirectal lymph node, both from resections for colonic adenocarcinoma in patients with known metastatic prostatic carcinoma.

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