Unusual variant of keratoacanthoma with spontaneous regression

Authors

  • Chatchadaporn Keerathikajornchai DIVISION OF DERMATOLOGY, DEPARTMENT OF MEDICINE, RAMATHIBODI HOSPITAL, MAHIDOL UNIVERSITY, BANGKOK, THAILAND
  • Kumutnart Chanprapaph DIVISION OF DERMATOLOGY, DEPARTMENT OF MEDICINE, RAMATHIBODI HOSPITAL, MAHIDOL UNIVERSITY, BANGKOK, THAILAND

Keywords:

Keratoacanthoma, Tumor, Regression

Abstract

Keratoacanthoma centrifugum marginatum (KCM) is an extremely rare variant of keratoacantoma(KA). In contrast with classic KA, KCM is a special type of KA that shows little tendency to clear spontaneously. We report an exceptional case of keratoacanthoma centrifugum marginatum with spontaneous regression within 5 months. The key point in the history is a lesion diminishing in size or at least one that has stopped enlarging. Histology of involuting tumor gave us confident to merely give close observation.

References

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Published

2026-06-11

How to Cite

Keerathikajornchai, C., & Chanprapaph, K. (2026). Unusual variant of keratoacanthoma with spontaneous regression. Thai Journal of Dermatology, 27(2), 142–146. retrieved from https://he02.tci-thaijo.org/index.php/TJD/article/view/282968

Issue

Section

Case Report