Cancer Res Treat.  2005 Apr;37(2):129-132.

Lymph Node Metastases of Prostatic Adenocarcinoma in the Mesorectum in Patients with Rectal Cancer

• Park IJ
• Kim HC
• Yu CS
• Kim CS
• Kim JS
• Kim JC

Abstract

Lymph node involvement is the most important prognostic factor of rectal cancer. Cancer originating from sites other than the rectum rarely metastasizes to the mesorectal lymph node. We report a rectal cancer patient with a synchronous metastatic prostatic carcinoma to the mesorectal lymph node.

Keyword

Mesorectal; Lymph node; Prostatic carcinoma

MeSH Terms

Adenocarcinoma*
Humans
Lymph Nodes*
Neoplasm Metastasis*
Rectal Neoplasms*
Rectum

Figure

• 

  Fig. 1 CT scan shows the encircling mass at the rectosigmoid junction. (A, B, C) An obstructing mass in the distal sigmoid colon. (D) Mass lesion in the prostate.

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  Fig. 2 Colonoscopy reveals the luminal-obstructing lesion in the distal sigmoid area.

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  Fig. 3 (A) The adenocarcinoma in the prostate, composed of cuboidal or columnar clear cells with a cribriform pattern. (B) The adenocarcinoma in the colon, with a complex glandular structures and pleomorphic columnar cells. (C) Right; The colonic adenocarcinoma metastasing to a lymph node. Left; The colonic adenocarcinoma is negative for PAP on immunostaining. (D) Right; The prostatic adenocarcinoma metastasizing to a lymph node. Left; The prostatic adenocarcinoma is positive for PAP on immunostaining.

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