Intradermal Proliferative Fasciitis Occurring With Chondrodermatitis Nodularis Helicis

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Ashley Elsensohn1, Sasha Getty, Jessica Shiu

  • 1Division of Dermatology, University of California Irvine, Irvine, CA.

The American Journal of Dermatopathology
|December 7, 2017
PubMed

Insights

Intradermal proliferative fasciitis (PF) is a rare skin tumor. This case highlights its occurrence on the ear, suggesting trauma may trigger this benign myofibroblastic proliferation.

Area of Science:

  • Dermatopathology
  • Surgical Pathology
  • Oncology

Background:

  • Nodular fasciitis is a benign myofibroblastic tumor.
  • Proliferative fasciitis (PF) is an uncommon variant.
  • Intradermal PF is an even rarer presentation.

Observation:

  • A 45-year-old man presented with recurrent painful, swollen ear lesions.
  • Histology revealed a dermal proliferation of ganglion-like fibroblasts and histiocytes.
  • Lesional cells expressed smooth muscle actin but lacked markers for other tumors.

Findings:

  • The case represents an intradermal proliferative fasciitis of the ear.
  • Immunohistochemistry confirmed the myofibroblastic nature of the tumor.
  • The patient's presentation suggests a possible link to chondrodermatitis nodularis helicis.

Implications:

  • This case expands the known clinical spectrum of proliferative fasciitis.
  • It supports the hypothesis that intradermal PF may arise secondary to trauma.
  • Understanding the etiology is crucial for accurate diagnosis and management of this benign neoplasm.

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