Lichen planus like keratosis: little known and misleading etiology of pigmented skin lesion

Authors

  • Marwa Asermouh Department of Dermatology-Venereology, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco
  • Chaimae Ait Khabba Department of Dermatology-Venereology, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco
  • Zoubida Mehsas Department of Dermatology-Venereology, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco
  • Sabrine Derqaoui Department of Anatomopathology, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco
  • Kaoutar Znati Department of Anatomopathology, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco
  • Mariame Meziane Department of Dermatology-Venereology, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco

DOI:

https://doi.org/10.18203/issn.2455-4529.IntJResDermatol20231829

Keywords:

Lichen planus like keratosis, Lichenoid benign keratosis, Umbilicus, Dermoscopy, Dermatopathology, Black skin tumor

Abstract

Benign lichenoid keratosis is a rarely described entity in the literature. It is believed to correspond to a process of clearance of a solar lentigo or a seborrheic keratosis that must be confirmed on histology. The clinical and dermoscopic presentations are very variable from one subject to another and according to the stage of progression. In our case, its localization on the umbilicus with a grayish-black clinical aspect and a doubtful dermoscopy is not only original, but led us to wrongly think of a malignant tumor and to perform an anatomopathological examination that helped to re-establish the diagnosis.

References

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Published

2023-06-26

Issue

Vol. 9 No. 4 (2023): July-August 2023

Section

Case Reports