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Related Experiment Videos

Two different lymph node metastatic patterns of a prostatic cancer.

H Saitoh1, K Yoshida, Y Uchijima

  • 1Department of Urology, Saitama Medical Center, Saitama Medical School, Kawagoe, Japan.

Cancer
|April 15, 1990
PubMed
Summary

Prostate cancer metastasis patterns vary. Type 1 involves pelvic and paraaortic lymph nodes, leading to more bladder/rectal spread and hydronephrosis. Type 2 shows distinct patterns, possibly via vertebral veins.

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Area of Science:

  • Urology
  • Oncology
  • Pathology

Background:

  • Prostate cancer is a leading cause of cancer death.
  • Understanding metastasis patterns is crucial for prognosis and treatment.
  • Lymph node involvement significantly impacts patient outcomes.

Purpose of the Study:

  • To investigate distinct patterns of lymph node metastasis in autopsy prostate cancer cases.
  • To correlate these patterns with specific sites of distant metastasis and clinical outcomes.

Main Methods:

  • Retrospective analysis of 753 autopsy cases of prostate cancer with metastasis.
  • Classification of lymph node metastasis into two types: Type 1 (pelvic and paraaortic) and Type 2 (paraaortic only).
  • Evaluation of associated distant organ metastasis and complications like hydronephrosis.

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Main Results:

  • 63% of cases exhibited lymph node metastasis.
  • Type 1 metastasis was associated with increased spread to the bladder and rectum, and less to lungs/liver.
  • Hydronephrosis was significantly more frequent in Type 1 cases (P < 0.01).
  • Type 1 showed continuous invasion, while Type 2 suggested skip metastasis or vertebral vein involvement.

Conclusions:

  • Two distinct lymph node metastatic patterns in prostate cancer exist.
  • These patterns influence the sites of distant metastasis and the risk of complications.
  • Type 2 metastasis may involve alternative routes like the vertebral venous system.