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Related Experiment Videos

Calcifying fibrous pseudotumor

J F Fetsch1, E A Montgomery, J M Meis

  • 1Department of Soft Tissue Pathology, Armed Forces Institute of Pathology, Washington, D.C. 2306-6000.

The American Journal of Surgical Pathology
|May 1, 1993
PubMed
Summary
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This study describes a unique benign fibrous lesion with specific collagen, calcification, and inflammatory cell features. Follow-up suggests it may represent a distinct fibrous pseudotumor entity.

Area of Science:

  • Pathology
  • Dermatopathology
  • Surgical Pathology

Background:

  • Benign fibrous lesions can present with diverse histopathological features.
  • Accurate classification is crucial for appropriate patient management and prognosis.

Purpose of the Study:

  • To characterize a distinctive benign fibrous lesion with unique morphologic features.
  • To evaluate the clinical behavior and potential for recurrence of this lesion.

Main Methods:

  • Retrospective analysis of 10 cases with detailed histopathological examination.
  • Review of clinical data including lesion location, patient demographics, and treatment outcomes.

Main Results:

  • The lesion is characterized by abundant hyalinized collagen, psammomatous/dystrophic calcifications, and lymphoplasmacytic infiltrate.

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  • Lesions occurred in various soft tissues, predominantly in young individuals (mean age 16.2 years).
  • One of six cases with follow-up showed late local recurrence (7.5 years post-excision).

    • Conclusions:

    • The described entity exhibits a unique combination of features not fitting established benign fibrous lesions.
    • Morphologic and follow-up data support its classification as a distinct fibrous pseudotumor.