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Related Experiment Videos

Seborrheic keratosis with possible central regression.

K Yamamoto1, A Ito, S Yoshitatsu

  • 1Department of Dermatology, Osaka Kosei-Nenkin Hospital, Japan.

Cutis
|September 1, 1989
PubMed
Summary

A suspected basal cell epithelioma case presented with features of pigmented seborrheic keratosis. Mononuclear cell inflammation was identified as a factor in its central regression.

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Area of Science:

  • Dermatology
  • Pathology

Background:

  • Basal cell epithelioma, a common skin cancer, can present with varied clinical and histologic features.
  • Pigmented seborrheic keratosis is a benign epidermal tumor.
  • Central regression is a phenomenon observed in some skin lesions.

Observation:

  • A skin lesion initially suspected as superficial-type basal cell epithelioma was examined.
  • Histologic examination revealed features consistent with pigmented seborrheic keratosis.
  • The lesion's clinical course suggested central regression had occurred.

Findings:

  • The case demonstrated a diagnostic challenge, mimicking basal cell epithelioma but histologically identified as pigmented seborrheic keratosis.
  • Evidence of central regression was observed in the lesion.
  • Mononuclear cell inflammation was implicated as a potential mechanism contributing to the regression process.

Implications:

  • This case highlights the importance of integrating clinical, histologic, and developmental findings for accurate diagnosis.
  • Understanding the role of inflammation in lesion regression may offer insights into dermatologic processes.
  • The findings contribute to the differential diagnosis of pigmented skin lesions.

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