Human Pathology: Case Reports (Sep 2021)

Metastatic malignant solitary fibrous tumor of urinary bladder

  • Gertruda Evaristo,
  • Pierre Olivier Fiset,
  • Wassim Kassouf,
  • Sungmi Jung,
  • Fadi Brimo,
  • Oluyomi Ajise

DOI
https://doi.org/10.1016/j.ehpc.2021.200527
Journal volume & issue
Vol. 25
p. 200527

Abstract

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We report a case of a primary malignant solitary fibrous tumor (SFT) of the urinary bladder in a previously healthy 35-year-old male. The unusual presentation, focal GATA3 expression in the biopsy and the excessive rarity of the entity at the involved location all contributed to a challenging diagnosis, which was finalized with the resection specimen. Review of the literature highlighted the rarity of this tumor but revealed a relatively positive outcome, with no previous reports of disease recurrence. We therefore describe the first report of malignant bladder SFT associated with pulmonary metastases.

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