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Eccrine squamous syringometaplasia. A prospective clinicopathologic study

T Serrano1, A Saez, A Moreno

  • 1Department of Pathology, Hospital Princeps d'Espanya, Barcelona.

Journal of Cutaneous Pathology
|February 1, 1993
PubMed
Summary

Squamous syringometaplasia (SS), a condition affecting eccrine ducts, was studied in 21 patients, often appearing with chronic ulcers. Distinguishing SS from squamous cell carcinoma (SCC) relies on specific pathological features.

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Area of Science:

  • Dermatopathology
  • Histopathology

Background:

  • Squamous syringometaplasia (SS) involves mature squamous metaplasia of eccrine ducts.
  • The etiology and precise clinical significance of SS require further elucidation.

Purpose of the Study:

  • To prospectively evaluate the frequency, clinical, and pathological characteristics of squamous syringometaplasia.
  • To identify key features for differentiating SS from well-differentiated squamous cell carcinoma (SCC).

Main Methods:

  • Prospective evaluation of 21 patients with SS.
  • Histopathological analysis of eccrine duct alterations.
  • Clinical correlation with associated diseases, particularly chronic ulcers.

Main Results:

  • SS was identified in association with various conditions, predominantly chronic ulcers.

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  • Patient ages ranged from 20 to 80 years, with no significant sex predilection.
  • Affected eccrine ducts were located in superficial and mid-dermis, showing inner keratinization.

    • Conclusions:

    • Squamous syringometaplasia is a distinct histopathological finding, often associated with chronic cutaneous disease.
    • Key diagnostic criteria for SS include preserved lobular configuration and absence of dysplasia/invasion, crucial for distinguishing it from SCC.