title: Spontaneous involution of keratoacanthoma, iconographic documentation and similarity with volcanoes of nature.
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.
authors.affiliation: Santiago Polanco 2030, 2°piso. of 10, Iquique, Chile, CEP: 1100000. leonorenei@vtr.net
authors.forename: Maria Leonor
authors.initials: ML
authors.lastname: Enei Gahona
authors.forename: Carlos d' Aparecida Santos
authors.initials: Cd
authors.lastname: Machado Filho
mesh_terms: D003937:Diagnosis, Differential; D004282:Documentation; D005260:Female; D006801:Humans; D007636:Keratoacanthoma / Q000473:pathology*; D019365:Metaphor; D008875:Middle Aged; D009668:Nose Diseases / Q000473:pathology*; D012075:Remission, Spontaneous