Browsing by Author "Guaman Roldan, Hugo Xavier"

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Oral mucosal melanoma: a case report and literature review.
(2022) Chamba Leon, Daniela Salome; Ruiz Maila, Pablo Rodrigo; Bravo Muñoz, Marx Italo; Guaman Roldan, Hugo Xavier; Diaz Vintimilla, Martin Fabian; Guallpa Gomez, Viviana Fabiola; Bravo Calderón, Diego Mauricio
Oral mucosal melanoma is an unusual and aggressive malignant tumor that mainly affects the palate of men aged between 50 and 60 years. We present a literature review focusing on the etiopathogenesis and the clinicopathologic features of this entity. In addition, we reported a rare case of an oral mucosal melanoma arising in the left cheek of a 60-yearold man. Computed tomography scan revealed infiltration of the tumor to other anatomic structures including the maxillary sinus, the zygomatic bone and the pterygoid processes. Based on its extension, the lesion was considered inoperable and treatment with three-dimensional conformal radiation therapy was proposed but the patient only attended to the first session and died from cancer progression 6 months after the diagnosis. This paper reinforces the importance of inclusion of this malignant tumor in the differential diagnosis of pigmented lesions of the oral mucosa.
Quirúrgico de plagiocefalia anterior: reporte de caso
(2021) Vintimilla Carvallo, Luis Carlos
Craniosynostosis is the premature, abnormal, and non-physiological fusion of one or more cranial sutures. Its etiology can be multifactorial and genetic factors, bone abnormalities or environmental factors may be involved. Among the different types of craniosynostosis we can find anterior plagiocephaly, which generally corresponds to a non-syndromic craniosynostosis and which can affect the patient in a physiological and aesthetic way. Hemi-coronal sutures are affected in this condition. The treatment will depend on each case, although many times it is usually the surgical choice in order to prevent functional deterioration and improve the facial and cranial appearance