Rehabilitation of the severely atrophic maxilla using LeFort I maxillary advancement and simultaneous zygoma implant placement: Proof of concept.

PURPOSE: To illustrate the workflow for simultaneous LeFort I maxillary advancement and zygomatic implant (ZI) placement. MATERIALS AND METHODS: Three consecutive patients referred for the rehabilitation of the severely atrophic maxilla were treated with simultaneous LeFort I maxillary advancement and ZI placement. An evaluation of the treatment protocol was carried out to validate the proposed workflow: indications, treatment planning, surgical splint manufacturing, surgical procedure and prosthetic loading. RESULTS: Maxillary reposition was carried out according to the previous virtual planning. Consequently, in all cases extrasinusal or sinus slot paths were used, proper emergence of the implant platform fully surrounded by alveolar bone was ensured, and full-arch rehabilitation supported by ZI was performed. A straight facial profile was achieved postoperatively in all cases and no surgical complications were noted. No resorption of maxillary distal bone was evident at the end of the first year of follow-up. However, a mean relapse of -4.3 mm (-10.06%) was evidenced for maxillary downward movement, and conversely, an extra-forward maxillary movement was observed (mean +1.4 mm, +82.8%) in all cases. CONCLUSIONS: Besides restoring oral function and aesthetics, this technique avoids donor site morbidity, decreases surgical time, and shortens the overall rehabilitation period.

Sarcoma de Ewing extraóseo en cabeza y cuello: revisión de la literatura a propósito de un caso / Extraskeletal Ewing's sarcoma of the head and neck: a case report and a literature review

Introducción. El sarcoma de Ewing extraesquelético (SEE) es un tumor maligno muy poco frecuente. La región de la cabeza y el cuello es una localización primaria inusual para este tipo de tumor. Material y métodos. El objetivo de esta revisión es identificar las principales localizaciones dentro de cabeza y cuello. Para ello se realizó una búsqueda en la base de datos MEDLINE. Se analizaron múltiples variables. Se realiza la revisión a propósito un caso clínico de un paciente con SEE en la mejilla. Resultados. De un total de 31 pacientes, se reportan 18 casos en cabeza y 13 en cuello. Conclusiones. En nuestra revisión no pudimos determinar ninguna localización que sea de mayor frecuencia en esta región. Las pruebas de imagen son útiles para estadificar, y son necesarios estudios anatomopatológicos para confirmar el diagnóstico. El tratamiento intensivo es el de mayor eficacia (AU)

Introduction. Extraskeletal Ewing's sarcoma (EES) is a rare malignant neoplasm. It is a highly unusual finding in the head and neck region. Material and methods. The aim of this review is to identify the main sites in the head and neck region, by searching in the MEDLINE database. A wide range of variables were analysed. This review was carried out due to a case report of a patient with EES of the cheek. Results. Out of a total of 31 patients, there were 18 cases in the head and 13 in the neck. Conclusions. In our review it was not possible to determine a more frequent head and neck location. The imaging studies are useful for staging, and the histology to confirm the diagnosis. An aggressive treatment has demonstrated to be more effective (AU)

Displasia fibrosa craneofacial avanzada: a propósito de un caso / Advanced craniofacial fibrous dysplasia: case report

La displasia fibrosa (DF) es una enfermedad fibroósea benigna que consiste en el reemplazamiento de hueso normal con excesiva proliferación de tejido conectivo fibroso con estructuras óseas afuncionales. La forma de DF craneofacial es poco frecuente y no está bien definida. La afectación más frecuente en el área craneofacial se da en el cuerpo de la mandíbula y zona posterior del maxilar. Los autores describen el manejo completo y la rehabilitación funcional de un caso de displasia fibrosa de mandíbula avanzado y revisan las opciones terapéuticas de esta condición (AU)

Fibrous dysplasia (FD) is a benign fibro-osseous disease where normal bone is replaced by an excessive proliferation of fibrous connective tissue with irregular trabecular bone. Craniofacial involvement is uncommon and is not well defined. The most commonly involved bones in the craniofacial area are the mandible body and the posterior maxilla. The authors describe the complete management and functional rehabilitation of a case of advanced fibrous dysplasia of the mandible, and provide an updated review of the therapeutic options for this condition (AU)

Malformación venosa intraósea primaria en hueso cigomático: actualización en criterios diagnósticos / Primary intraosseous venous malformation of the zygoma: update in diagnostic criteria

Las anomalías vasculares incluyen dos entidades bien diferenciadas aunque frecuentemente confundidas en la literatura científica: los hemangiomas y las malformaciones vasculares. La localización primaria intraósea cigomática es muy infrecuente. Además, la mayoría de los casos publicados han sido categorizados de «hemangioma» de forma poco rigurosa. Los autores describen un caso de malformación venosa intraósea cigomática y discuten las características clínicas, histológicas e inmunohistoquímicas distintivas de las anomalías vasculares que conducen a un adecuado diagnóstico y un tratamiento eficaz (AU)

Vascular anomalies include two well-differentiated conditions that are nevertheless often confused in the scientific literature: haemangiomas and vascular malformations. Primary intraosseous involvement of the zygoma is particularly rare. Moreover, most reported cases of zygomatic involvement have been categorised as “haemangioma” without appropriate diagnostic criteria. The authors describe a case of intraosseous venous malformation of the zygoma and discuss the specific clinical, histological and immunohistochemical criteria of vascular anomalies that lead to a correct diagnosis and subsequent effective treatment (AU)