Keratoacanthoma: A Case Report, An Update, and Review of Literature

This study aimed to review and briefly discuss the literature about keratoacanthoma (KA) and present a case of KA of the facial skin under the right eye with over 6-months of follow-up after removal. Case: An 86-year-old healthy man was referred to a private clinic with a 5-6-week history of a rapidly growing, crateriform nodule with a central hemorrhagic crust on the facial skin under the right eye. Surgical excision was the treatment chosen to differentiate the lesion from squamous cell carcinoma (SCC). Thereafter, the lesion was completely excised. Histopathological analysis confirmed the diagnosis of KA. During over 6 months of follow-up after removal of the lesion, the patient was completely satisfied with the process of treatment, and no recurrence occurred. Conclusion Solitary KA lesions are commonly found on sun-exposed skin in older adults, similar to our case. Early diagnosis and treatment could reduce the risk of malignancy and recurrence. Moreover, close follow-up of patients with a history of KA is needed, because the possibility of developing a new KA lesion, due to trauma or medical and cosmetic procedures, especially on the UV damaged skin, still exists.