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Eccrine differentiation in basal cell carcinoma

P J Heenan1, M S Bogle

  • 1Department of Pathology, University of Western Australia, Nedlands.

The Journal of Investigative Dermatology
|March 1, 1993
PubMed
Summary
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Basal cell carcinomas can show eccrine differentiation, suggesting a potential origin from eccrine ducts. This finding offers new insights into the relationship between basal cell carcinoma and squamous cell carcinoma.

Area of Science:

  • Dermatopathology
  • Oncology

Background:

  • Basal cell carcinoma (BCC) is the most common human cancer.
  • The origin of BCC is generally considered to be the basal layer of the epidermis or the follicular bulge.
  • Eccrine differentiation in BCC has been infrequently reported.

Purpose of the Study:

  • To investigate the occurrence and characteristics of eccrine differentiation in basal cell carcinomas.
  • To explore the potential origin of BCC from the eccrine ductal system.

Main Methods:

  • Histologic examination of 66 basal cell carcinoma (BCC) specimens.
  • Immunohistochemical analysis to identify markers of eccrine differentiation.

Main Results:

  • Eccrine differentiation was identified in 16 out of 66 (24%) BCCs based on histologic and immunohistochemical criteria.

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  • The observed differentiation included features of the eccrine duct and acrosyringium.

    • Conclusions:

    • Basal cell carcinomas can exhibit differentiation towards eccrine structures.
    • This suggests that some BCCs may arise from the eccrine duct, including the acrosyringium.
    • Understanding this differentiation may help elucidate differences in site distribution and etiology between BCC and squamous cell carcinoma.