Case report identifies seborrheic keratosis in a 59-year-old man, suggesting distinct diagnostic considerations for nasal lesions.
Seborrheic keratosis (SK) is a common benign epithelial neoplasm most often found on sun-exposed skin, particularly in elderly individuals. Despite its prevalence, involvement of the nasal vestibule is extraordinarily rare, with only a few documented cases. We present the case of a 59-year-old man with a verrucous lesion in the left nasal vestibule that was completely excised and histopathologically confirmed as SK. This case emphasizes the importance of distinguishing SK from benign and malignant tumors such as basal cell carcinoma and squamous cell carcinoma, which occur more frequently in this anatomical site. A comprehensive review of the literature regarding the presentation, diagnosis, histopathology, and treatment of SK at atypical locations is also provided.
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Moon et al. (2025) studied this question.
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