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Related Experiment Videos

Ectopic extramammary Paget's disease affecting the upper abdomen

Y Onishi1, K Ohara

  • 1Department of Dermatology, Toranomon Hospital, Tokyo, Japan.

The British Journal of Dermatology
|May 1, 1996
PubMed
Summary

Ectopic extramammary Paget's disease (EMPD) is rare, with only 12 reported cases. This study found ectopic EMPD clinically and histologically indistinguishable from ordinary EMPD, suggesting a shared origin.

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Area of Science:

  • Dermatology
  • Oncology
  • Pathology

Background:

  • Extramammary Paget's disease (EMPD) is a rare intraepithelial adenocarcinoma.
  • Ectopic EMPD, occurring outside typical genital/perianal regions, is exceptionally uncommon.

Observation:

  • A 57-year-old male presented with upper abdominal lesions initially suspected as Bowen's disease or basal cell epithelioma.
  • Histopathological examination confirmed ectopic extramammary Paget's disease (EMPD).
  • This represents the first ectopic EMPD case in a 20-year experience with 129 EMPD cases (0.78% frequency).

Findings:

  • Only 12 cases of ectopic EMPD have been reported globally, including this case.
  • Demographic data (male/female ratio, mean age) for ectopic EMPD align closely with ordinary EMPD.

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  • Clinical and histological features of ectopic EMPD show no significant differences compared to ordinary EMPD.
  • Implications:

    • Ectopic and ordinary EMPD are likely the same disease entity, sharing similar origins and pathogenesis.
    • The hypothesis that Paget's cells arise from pluripotential germinative cells is supported.
    • Further research into the origins of EMPD is warranted to understand its development in ectopic locations.