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Related Experiment Videos

Giant malignant phyllodes tumor: a case report.

Miki Takenaka1, Uhi Toh, Hiroko Otsuka

  • 1Department of Pathology, Kurume University School of Medicine, Kurume University Hospital, Kurume University, Kurume 830-0011, Japan. takenaka_miki@kurume-u.ac.jp

The Kurume Medical Journal
|January 19, 2012
PubMed
Summary

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This case study discusses a rare giant malignant phyllodes tumor (PT) in a 57-year-old woman. Distinguishing between PT and sarcoma requires careful examination of tissue samples for epithelial structures.

Area of Science:

  • Oncology
  • Surgical Pathology
  • Breast Cancer Research

Background:

  • Malignant phyllodes tumors (PT) are rare breast neoplasms.
  • Giant PTs (>10 cm) present diagnostic challenges.
  • Distinguishing PT from pure sarcoma is critical for treatment.

Observation:

  • A 57-year-old woman presented with a 20 cm malignant PT.
  • Initial biopsies were suspicious for low-grade myofibroblastic sarcoma (LGMS).
  • Mastectomy revealed stromal predominance with focal leaf-like patterns.

Findings:

  • The diagnosis of malignant PT was confirmed despite stromal predominance.
  • Absence of epithelial components can mimic pure sarcoma.
  • Careful examination of multiple sections is essential for accurate diagnosis.

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Implications:

  • Accurate differentiation between malignant PT and sarcoma is crucial for appropriate patient management.
  • Histopathological evaluation requires meticulous search for residual epithelial structures.
  • This case highlights diagnostic difficulties in large PTs with stromal overgrowth.