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Related Experiment Videos

Pseudomyogenic Hemangioendothelioma.

Shin-Ichi Ansai1, Maya Morimoto2, Satoshi Akaishi2

  • 1Division of Dermatology and Dermatopathology, Nippon Medical School Musashi Kosugi Hospital.

Journal of Nippon Medical School = Nippon Ika Daigaku Zasshi
|May 28, 2019
PubMed
Summary

Pseudomyogenic hemangioendothelioma (PMHE) is an intermediate soft tissue tumor that can mimic high-grade malignancies. This case report details a PMHE diagnosis on a patient's plantar surface, highlighting key diagnostic features.

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Area of Science:

  • Oncology
  • Pathology
  • Dermatology

Background:

  • Pseudomyogenic hemangioendothelioma (PMHE) is a recently identified intermediate soft tissue tumor.
  • PMHE presents clinical and histopathological features that can be mistaken for high-grade malignant tumors or inflammatory conditions.

Observation:

  • A case of PMHE is presented on the left plantar surface of a 28-year-old woman.
  • Histopathological examination revealed atypical spindle and epithelioid cells in the dermis and subcutaneous fat with significant fibroplasia.
  • Neoplastic cells exhibited positivity for AE1/AE3, CK7, vimentin, CD31, FLI-1, ERG, and INI-1.

Findings:

  • The diagnosis of PMHE was confirmed based on the observed histopathological characteristics and immunohistochemical profile.
  • The study emphasizes the differential diagnosis of PMHE, distinguishing it from similar-appearing conditions.
Keywords:
CD31epithelioid sarcomakeratinpseudomyogenic hemangioendothelima

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Implications:

  • Accurate diagnosis of PMHE is crucial to avoid misclassification as a high-grade malignancy.
  • Understanding the distinct features of PMHE aids in appropriate patient management and treatment strategies.
  • This report contributes to the growing body of literature on this rare soft tissue tumor.