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Updated: May 22, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
Published on: August 9, 2024
Spontaneous involution of keratoacanthoma, iconographic documentation and similarity with volcanoes of nature
Maria Leonor Enei Gahona1, Carlos d' Aparecida Santos Machado Filho
1Santiago Polanco 2030, 2°piso. of 10, Iquique, Chile, CEP: 1100000. leonorenei@vtr.net
Abstract:
Through iconography, we show a case of keratoacanthoma (KA) on the nasal dorsum at two different stages of evolution (maturation and regression) and its similarity with images of the Mount St. Helens volcano and the Orcus Patera crater. Using these illustrations, we highlight why the crateriform aspect of this tumor is included in its classic clinical description. Moreover, we photographically documented the self-involuting tendency of KA, an aspect that is seldom documented in the literature.
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