Abstract
Background: Keratoacanthoma is a rapidly growing cutaneous epithelial tumor that often resolves spontaneously or with minimal treatment. However, its occurrence in the nasal vestibule is rare, and its nature is poorly understood.
Case report: We report a case of a 46-year-old female who presented with a rapidly growing lesion in her left nasal vestibule. A biopsy confirmed the diagnosis of keratoacanthoma. However, the patient declined further treatment and was followed up regularly. Subsequently, the lesion gradually decreased in size over the next several months and eventually disappeared without any intervention.
Discussion: The spontaneous regression of keratoacanthoma is a well-known phenomenon, but its occurrence in the nasal vestibule is rare. To our knowledge, few cases of nasal vestibular keratoacanthoma with spontaneous regression have been reported in the literature. This case highlights the importance of considering the possibility of spontaneous regression in patients with keratoacanthoma, even in rare locations such as the nasal vestibule.
Conclusion: This case demonstrates that keratoacanthoma in the nasal vestibule can regress spontaneously without any intervention. Clinicians should be aware of this possibility and carefully weigh the risks and benefits of treatment options in such cases. Further studies are needed to elucidate the natural course and optimal management of this rare entity.