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Isolation, Culture, and Characterization of Primary Dermal Fibroblasts from Human Keloid Tissue
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Does Keloid Histology Influence Recurrence?

Ferdinand W Nangole1, Kelsey Ouyang2, Omu Anzala3

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Keloid histology impacts recurrence. Elevated lymphocytes and macrophages in excised keloids correlate with higher recurrence rates, suggesting targeted monitoring for these patients.

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Area of Science:

  • Dermatology
  • Pathology
  • Surgical Oncology

Background:

  • Keloids are benign fibroproliferative tumors with high recurrence rates after surgical excision.
  • Factors influencing keloid recurrence remain incompletely understood.
  • Histopathological features of keloids are rarely correlated with clinical outcomes.

Purpose of the Study:

  • To investigate the correlation between histopathological parameters of keloids and their postoperative recurrence.
  • To identify specific histological markers predictive of keloid recurrence.

Main Methods:

  • Prospective longitudinal study of 90 patients with 104 keloids undergoing surgical excision.
  • Histological analysis of excised keloids for inflammatory cells (lymphocytes, macrophages, mast cells), fibroblasts, and capillary density.
  • Correlation of histological findings with keloid recurrence over a minimum 1-year follow-up period.

Main Results:

  • Overall keloid recurrence rate was 28.6%.
  • A high count (>50/HPF) of lymphocytes, fibroblasts, and macrophages significantly correlated with keloid recurrence.
  • Lymphocytes (48% sensitivity, 81% specificity) and macrophages (57% sensitivity, 83% specificity) showed predictive value.
  • No correlation was found between mast cells or vascularity and recurrence.

Conclusions:

  • Routine histopathological examination of keloids can identify patients at higher risk of recurrence.
  • Elevated lymphocyte and macrophage counts indicate a need for close postoperative monitoring and consideration of second-line therapies.
  • Histological assessment aids in personalized management strategies to reduce keloid recurrence.