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Related Experiment Videos

Primary prostatic signet-ring cell carcinoma

G Skodras1, J Wang, P J Kragel

  • 1Department of Pathology, University of Missouri-Kansas City, Truman Medical Center.

Urology
|September 1, 1993
PubMed
Summary

This case study details a rare primary prostatic signet-ring cell carcinoma, characterized by aggressive behavior and distinct histological features including intestinal metaplasia. The findings highlight the importance of recognizing this uncommon entity in clinical practice.

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Area of Science:

  • Uropathology
  • Oncology

Background:

  • Primary prostatic signet-ring cell carcinoma is an exceptionally rare and aggressive malignancy.
  • Understanding its clinicopathologic features is crucial for accurate diagnosis and management.

Observation:

  • A unique case presented with urinary obstruction and locally advanced disease.
  • Histological examination revealed signet-ring cells with solid sheets, intestinal metaplasia in the prostatic urethra, and positive mucin stains.
  • Immunohistochemistry confirmed positivity for prostatic specific antigen, prostatic acid phosphatase, and carcinoembryonic antigen.

Findings:

  • The tumor exhibited three distinct growth patterns, with solid sheets of signet-ring cells being predominant.
  • Intestinal metaplasia was observed in the prostatic urethra and periurethral ducts.

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  • Signet-ring cells were positive for key prostatic and tumor markers.

    • Implications:

    • This case underscores the aggressive biologic behavior of prostatic signet-ring cell carcinoma.
    • Accurate identification through histology and immunohistochemistry is vital for patient care.
    • Further research into this rare entity may improve therapeutic strategies.