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Related Experiment Videos

Intravenous tufted angioma.

M Fukunaga1

  • 1Department of Pathology, The Jikei University School of Medicine, Tokyo, Japan. maasafu@jikei.ac.jp

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
|June 8, 2000
PubMed
Summary

This case report details a rare intravenous tufted angioma, a vascular tumor presenting as a reddish nodule. The findings suggest it may be a unique clinicopathological entity related to other vascular tumors.

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Area of Science:

  • Vascular Pathology
  • Dermatopathology
  • Oncology

Background:

  • Intravenous tufted angioma is a rare vascular tumor.
  • Understanding its distinct clinicopathological features is crucial for diagnosis.

Observation:

  • A 51-year-old Japanese man presented with a congenital 12x8 mm solitary reddish nodule on his right foot.
  • Histological examination revealed a tumor confined to a malformed vein, characterized by nodular aggregates of plump, round, capillary-forming cells.

Findings:

  • Immunohistochemistry confirmed endothelial markers (factor VIII-related antigen, CD31, CD34) in capillary-forming and endothelial cells.
  • Pericyte-like cells (alpha-smooth muscle actin) and macrophage-like cells (factor XIIIa) were present.
  • Flow cytometry showed diploidy, and no multinucleated giant cells were observed.

Implications:

  • The tumor may represent a hamartomatous lesion with secondary reactive changes.
  • This entity appears closely related histogenetically and pathologically to tufted angioma and giant cell angioblastoma.
  • Further research may clarify its unique clinicopathological status.

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