Lesiones cervicofaciales tumorales y pseudotumorales pediátricas en Villa Clara. Años 2010-2019 / Pediatric tumoral and pseudotumoral cervicofacial lesions in Villa Clara from 2010 to 2019

Caracterizar las lesiones cervicofaciales tumorales y pseudotumorales en niños en Villa Clara es una necesidad creciente por las alteraciones físicas, estéticas y psicológicas que pueden ocasionar. Se realizó un estudio transversal y descriptivo en el Servicio de Cirugía Maxilofacial Pediátrico de esta provincia, en el período 2010-2019. La población estuvo constituida por 101 niños con estudio histológico concluyente de lesión tumoral benigna, maligna o pseudotumoral de la región cervicofacial. Se concluyó que los tumores y pseudotumores en la región cervicofacial no tuvieron relación con la edad, género, ni color de la piel, en los niños estudiados. En esta serie predominaron los tumores benignos. El tumor maligno de mayor prevalencia fue el Linfoma de Burkitt. Existió alta correlación entre los diagnósticos clínico e histológico.

Characterizing tumoral and pseudotumoral cervicofacial lesions in children in Villa Clara is a growing need due to the physical, aesthetic and psychological alterations that they can cause. A cross-sectional and descriptive study was carried out in the pediatric maxillofacial surgery service of this province from 2010 to 2019. The population consisted of 101 children with conclusive histological study of benign and malignant tumoral or pseudotumoral lesions of the cervicofacial region. We concluded that tumors and pseudotumors in the cervicofacial region were not related to age, gender or skin color in the studied children. In this series, benign tumors predominated. The most prevalent malignant tumor was Burkitt's lymphoma. There was a high correlation between clinical and histological diagnoses.

Tratamento cirúrgico do mixoma odontogênico sem ressecção maxilar: relato de caso / Surgical Treatment od Odontogenic Mixoma Without Maxillary Resection: Case Report / Tratamiento Quirúrgico del Mixoma Odontogénico Sin Resección Maxilar: Informe de Caso

Mixoma Odontogênico é um tumor de origem mesenquimal raro, de desenvolvimento lento e agressivo que acomete indivíduos entre os 10 e 40 anos de idade e principalmente, do gênero feminino. Este estudo teve como principal objetivo descrever um caso clinico de tratamento cirúrgico do mixoma odontogênico sem ressecção maxilar em uma paciente do gênero feminino que compareceu ao Ambulatório de Patologia Oral e Maxilo Facial, da Faculdade de Odontologia da UNIRG, na cidade de Gurupi-TO - Brasil. A paciente foi submetida ao tratamento cirúrgico conservador, através da curetagem e enucleação total do tumor. A proservação foi realizada em períodos de 12 meses, 24 meses e 48 meses aonde pode-se observar a sequencial e completam reparação óssea, inclusive a permanência dos dentes envolvidos que foram submetidos a tratamento endodôntico com total remodelação da lâmina dura e do ligamento periodontal... (AU)

Odontogenic Myxoma (OM) is a rare tumor of mesenchymal origin, of slow and aggressive development that affects individuals between 10 and 40 years of age and mainly female. This study aimed to describe a clinical case of surgical treatment of odontogenic myxoma with out maxillary resection in a female patient who attended the Outpa tient Clinic of Oral Pathology and Facial Maxillo, of UNIRG Dental School, in the city of Gurupi-TO - Brazil. The patient underwent con servative surgical treatment through curettage and total enucleation of the tumor. Proservation was carried out in periods of 12 months, 24 months and 48 months where it was possible to observe the sequential and complete bone repair including the permanence of the involved teeth that underwent endodontic treatment with total remodeling of hard blade and of the periodontal ligament... (AU)

El mixoma odontogénico es un tumor de origen mesenquimal poco frecuente, de desarrollo lento y agresivo que afecta a individuos entre 10 y 40 años de edad y principalmente mujeres. El objetivo principal de este estudio fue describir un caso clínico de tratamiento quirúrgico de mixoma odontogénico sin resección maxilar en una paciente femenina que asistió a la Clínica Ambulatoria de Patología Oral y Maxilo Facial, de la Facultad de Odontología de UNIRG, en la ciudad de Gurupi-TO - Brasil. El paciente se sometió a tratamiento quirúrgico conservador mediante legrado y enucleación tumoral total. La conservación se realizó en periodos de 12 meses, 24 meses y 48 meses donde es posible observar reparación ósea secuencial y completa, incluyendo la permanencia de los dientes implicados que fueron sometidos a tratamiento endodóntico con remodelación total de la durancia y ligamento periodontal... (AU)

Injerto de hueso calvarial envuelto en colgajo pediculado de fascia temporo-parietal para reconstrucción de reborde cigomático-maxilar e infraorbitario: reporte de caso / Calvarial bone graft wrapped in temporo-parietal fascia pedicled flap for zygomatico-maxillary and infraorbital rim reconstruction: case report

La reconstrucción posterior a una cirugía oncológica resectiva maxilar es todo un desafío. Debido a esto, existen diversas técnicas quirúrgicas cuyo objetivo apunta a mantener no solo la funcionalidad, sino también la estética facial, especialmente en el área del reborde infraorbitario. El injerto de hueso calvarial es una opción segura y versátil para realizar una reconstrucción primaria en el reborde infraorbitario. Esta técnica está indicada en aquellos pacientes en los cuales la resección cutánea y exenteración orbitaria no son necesarias. Por este motivo, a continuación, analizaremos este tipo de injerto a propósito de un caso clínico en el que se usó asociado a un colgajo pediculado de fascia temporoparietal.

Reconstruction after maxillary resective oncological surgery is a challenge. Because of this, there are many surgical techniques whose objective is to maintain not only function but also facial aesthetics, especially in the infraorbital rim area. The calvarial bone graft is a safe and versatile option to perform a primary infraorbital rim reconstruction. This technique is indicated in those patients in whom skin resection and orbital exenteration are not necessary. For this reason, we will now analyze this type of graft in relation to a case in which it was used associated with a temporo-parietal fascia flap.

Defecto oncológico maxilar reconstruido mediante colgajo de músculo temporal / Maxillary oncologic defect reconstructed with temporal muscle flap / Defeito oncológico maxilar reconstruído por aba muscular temporal

El macizo facial es una región anatómica compleja que alberga órganos sensoriales. El desarrollo de una enfermedad oncológica, así como su tratamiento, causan defectos funcionales y estéticos con un alto costo físico y psíquico para el paciente y su entorno. Es por ello que la reconstrucción representa un reto. Las diferentes posibilidades incluyen prótesis obturatríces, colgajos libres, pediculados o microvascularizados. En este artículo se describirá el colgajo de músculo temporal y se desarrolla un caso clínico de cirugía oncológica maxilar reconstruido mediante éste en un paciente que presenta una lesión exofítica en cuadrante superior derecho, que se extiende sobre el flanco vestibular, reborde alveolar y zona palatina, desde zona de premolares hasta la zona del segundo molar inclusive, impidiéndole usar la prótesis dental. Esta cirugía es una técnica económica, que requiere menor tiempo quirúrgico que otras técnicas, asociándose a poco porcentaje de fracaso y pocas complicaciones post operatorias.

The facial mass is a complex anatomical region that houses sensory organs. The development of an oncologic disease, as well as its treatment, causes functional and esthetic defects with a high physical and psychological cost for the patient and his environment. This is why reconstruction represents a challenge. The different possibilities include obturator-root prostheses, free, pedicled or microvascularized flaps. In this article the temporal muscle flap will be described and a clinical case of maxillary oncologic surgery reconstructed by means of it is developed in a patient who presents an exophytic lesion in the right upper quadrant, which extends over the vestibular flank, alveolar ridge and palatal area, from the premolar area up to and including the second molar area, preventing him from using the dental prosthesis. This surgery is an economical technique that requires less surgical time than other techniques, and is ass

A massa facial é uma região anatômica complexa que abriga órgãos sensoriais. O desenvolvimento de uma doença oncológica, assim como seu tratamento, causa defeitos funcionais e estéticos com alto custo físico e psicológico para o paciente e seu ambiente. A reconstrução é, portanto, um desafio. As diferentes possibilidades incluem as próteses de raiz obturadora, abas livres, pediculadas ou microvascularizadas. Este artigo descreve o retalho muscular temporal e descreve um caso clínico de cirurgia oncológica maxilar reconstruída utilizando-o em um paciente com lesão exofítica no quadrante superior direito, estendendo-se pelo flanco vestibular, rebordo alveolar e área palatina, desde a área do pré-molar até a área do segundo molar inclusive, impedindo-o de utilizar a prótese dentária. Esta cirurgia é uma técnica econômica, que requer menos tempo cirúrgico que outras.

Jaw osteosarcoma and pregnancy: a rare coexistence

Osteosarcoma of the jaw represents less than 1% of all head and neck malignancies. This malignancy in pregnant women occurs in one per 1000 deliveries. We report a case of a 29-year-old woman, in the 33rd week of gestation, who presented with an expansive tumor destroying the maxillary alveolar bone, histologically composed of pleomorphic, round, spindle, or epithelioid cells and osteoid/chondroid matrix. Upon final diagnosis of osteosarcoma, the lesion was excised. To the best of our knowledge, only 10 cases of jaw osteosarcoma in pregnant women have been reported to date in the English language literature. The use of ancillary examinations, malignancy diagnosis, and cancer treatment can be challenging during pregnancy. Knowledge about jaw osteosarcoma in pregnancy can increase healthcare providers' awareness, avoid delays and misdiagnosis and potentially improve maternal and neonatal outcomes.

Pindborg tumor associated with a supernumerary tooth: a case report

The calcifying epithelial odontogenic tumor is a rare benign neoplasm that accounts for approximately 1% of all odontogenic tumors. Most of the cases occur in the posterior mandible, and a few involve the maxilla. Despite their relatively indolent biological behavior, tumors in the maxilla tend to grow fast. We report the case of a 33-year-old female patient exhibiting swelling in the right maxilla. An isodense area associated with an impacted supernumerary tooth was found on imaging examination. The histopathologic diagnosis was a calcifying epithelial odontogenic tumor. The treatment of choice was surgical removal of the lesion and associated dental elements. The patient has been followed up for 11 months and shows no signs of recurrence. Besides describing this case, we reviewed the literature on the association of calcifying epithelial odontogenic tumors with supernumerary teeth and found two case reports addressing this subject.

Colgajo naso geniano para reconstrucción de lesiones de cavidad oral: Reporte de Caso / Nasogenian flap for reconstruction of oral cavity lesions a Case report / Retalho nasogeniano para reconstrução de lesões da cavidade oral a Relato de caso

Introducción: La maxilectomía es la intervención quirúrgica recomendada para la exéresis de neoplasias faciales, esta técnica comprende la resección de los maxilares y de estructuras anatómicas adyacentes, y conlleva diferentes grados de alteración funcional. La reconstrucción de defectos medio faciales re-presenta un gran desafío, se utilizan diferentes técnicas desde el uso de prótesis obturadoras, colgajos locales, hasta colgajos libres, con la finalidad de la mayor recuperación de funciones sofisticadas como el habla, la deglución y la ventilación en vía área superior. Reporte de caso: Paciente hombre de 89 años de edad con 4 meses de evolución de masa tumoral decrecimiento progresivo y constante en la mitad del paladar superior y se extiende tomando el maxilar superior derecho. Al examen físico se observa la cavidad con deficiente cuidado de las piezas dentales y una masa tumoral de más de 15 cm de diámetro que deforma la cavidad oral. Evolución: Se realizó tumorectomía y vaciamiento ganglionar con preservación de nervio espinal, hipogloso, lingual, musculo esternocleidomastoideo, vena yugular interna, vena y arteria facial. Se realizó una reconstrucción de neopaladar con colgajo nasogeniano. La patología definitiva recibida en días posteriores reportó un carcinoma escamo celular pobremente diferenciado de estirpe epitelial con borde quirúrgico positivo para el tumor. Dentro del período postoperatorio el paciente presentó una neumonía asociada a los cuidados de la salud, acompañada con déficit neurológico, el cuadro involucionó hasta sepsis de origen pulmonar y fallece 21 días posteriores a la cirugía. Conclusiones: El crecimiento acelerado de una masa del maxilar en este paciente se asoció con la presencia de un carcinoma escamo celular pobremente diferenciado.

Introduction: Maxillectomy is the recommended surgical intervention for the excision of facial neoplasms. This technique includes the resection of the jaws and adjacent anatomical structures, and en-tails different degrees of functional alteration. The reconstruction of mid-facial defects represents a great challenge, different techniques are used from the use of obturator prostheses, local flaps, to free flaps, with the aim of greater recovery of sophisticated functions such as speech, swallowing and ventilation in via upper area. Case report: An 89-year-old male patient with a 4-month evolution of a tumor mass with progressive and constant growth in the middle of the upper palate and extending taking the right upper jaw. Physical examination revealed the cavity withpoor dental care and a tumor mass of more than 15 cm in diameter that deformed the oral cavity. Evolution: A lumpectomy and lymph node dissection were performed with preservation of the spinal, hypoglossal, lingual, sternocleidomastoid muscle, internal jugular vein, vein and facial artery. A neo-palatal reconstruction with a nasolabial flap was performed. The definitive pathology received in later days reported a poorly differentiated squamous cell carcinoma of epithelial lineage with a positive surgical border for the tumor. Within the postoperative period, the patient presented pneumonia associated with health care, accompanied by neurological deficit, the condition regressed to sepsis of pulmonary origin and died 21 days after surgery. Conclusions: The accelerated growth of a maxillary mass in this patient was associated with the pres-ence of a poorly differentiated squamous cell carcinoma.

Introdução: A maxilectomia é a intervenção cirúrgica recomendada para a excisão de neoplasias faciais, esta técnica inclui a ressecção da mandíbula e das estruturas anatômicas adjacentes e acarreta diferentes graus de alteração funcional. A reconstrução dos defeitos médios da face representa um grande desafio, diferentes técnicas são utilizadas desde o uso de próteses obturadoras, retalhos locais, até retalhos livres, com o objetivo de maior recuperação de funções sofisticadas como fala, deglutição e ventilação em via. . Relato do caso: Paciente do sexo masculino, 89 anos, com evolução de 4 meses de massa tumoral progressiva e constante decrescente em meio palato superior e extensão em maxilar superior direito. Ao exame físico, observa-se cavidade com mau atendimento odontológico e massa tumoral de mais de 15 cm de diâmetro que forma a cavidade oral. Evolução: Realizada lumpectomia e dissecção dos linfonodos com preservação da coluna vertebral, hipoglosso, nervo lingual, músculo esternocleidomastóideo, veia jugular interna, veia e artéria facial. Foi realizada reconstrução neo-palatina com retalho nasolabial. A patologia definitiva recebida em dias posteriores relatou um carcinoma de células escamosas pouco diferenciado de linhagem epitelial com uma borda cirúrgica positiva para o tumor. No pós-operatório, o paciente apresentou pneumonia associada aos cuidados de saúde, acompanhada de déficit neurológico, o quadro regrediu para sepse de origem pulmonar e faleceu 21 dias após a cirurgia. Conclusões: O crescimento acelerado de uma massa maxilar neste paciente foi associado à presença de um carcinoma espinocelular pouco diferenciado.

Reconstrucción de cavidad oral con colgajo de músculo temporal: caso clínico / Reconstruction of oral cavity with temporal muscle flap: a clinical case

Objetivo: Describir la técnica de reconstrucción oral con colgajo de músculo temporal por resección de lesión oncológica. Caso clínico: Un paciente de sexo masculino, de 70 años de edad, fue derivado al Hospital Sirio Libanés desde la Facultad de Odontología de la Universidad de Buenos Aires con diagnóstico de carcinoma mucoepidermoide de siete meses de evolución, ubicado en el reborde alveolar del maxilar superior izquierdo, a nivel de las piezas dentarias 25 a 28. Se realizó la resección del tumor bajo anestesia general y la consiguiente reconstrucción del lecho mediante la técnica de reconstrucción oral con colgajo de músculo temporal. Conclusión: El colgajo temporomiofascial resultó ser versátil para la reconstrucción maxilofacial en lo que respecta a la proximidad, el tamaño, la fiabilidad de la vascularización y la facilidad de la técnica (AU)

Aim: To describe the temporalis myofacial flap technique for reconstruction in the maxillofacial region following oral cancer resection. Clinical case: A 70-year-old male patient was referred to the Sirio Libanés Hospital from the Dental School, University of Buenos Aires with a diagnosis of mucoepidermoid carcinoma with 7 months of evolution located in the alveolar ridge of the left upper jaw, at the level of teeth 25 to 28. The tumor was resected under general anesthesia and a rotational flap of the temporalis muscle was used for the reconstruction of the area. Conclusion: The temporalis flap was a versatile option for the reconstruction of maxillofacial defects due to its proximity to the oral cavity, the reliable vascularity and minor donor site morbidity (AU)

Tumor odontogénico adenomatoide mandibular / Mandibular adenomatoid odontogenic tumor

Introducción: El tumor odontogénico adenomatoide, es una neoplasia benigna hamartomatosa de tipo odontogénico, que constituye entre 3 al 7 % de todos los tumores odontogénicos. Se presenta frecuentemente en pacientes jóvenes de sexo femenino y se localiza en el maxilar superior en la zona anterior, principalmente en el canino, se asocia a dientes incluidos, son neoplasias de crecimiento lento, indoloro y asintomático. Se clasifica: en folicular, extrafolicular, y periférico. Presentación del caso: El caso trata de un paciente masculino de 22 años 8 meses, sin antecedentes patológicos de importancia el cual presenta desde hace 1 año abultamiento en región paranasal izquierda, indolora. Acude a odontología del Hospital Carlos Andrade Marín, donde se le realiza una radiografía panorámica y se evidencia un OD 23 (pieza 23 que no ha erupcionado) la lesión se relaciona con la órbita, se observa una formación quística que abarca maxilar y seno maxilar del lado izquierdo. Además, el abultamiento toma el tercio medio de la región facial. Discusión: El tumor odontogénico adenomatoide es considerado una neoplasia benigna que crece progresivamente y lentamente. El tratamiento de esta lesión es la enucleación y curetaje de la zona afectada sin observarse recidiva.

Introduction: The adenomatoid odontogenic tumor, is a benign hamartomatous neoplasm of odontogenic type, which constitutes between 3 to 7% of all odontogenic tumors. It occurs in young patients more than females and are located in the upper jaw in the anterior area, mainly the canine, is associated with teeth included, are slow growing, painless and asymp- tomatic neoplasms. It is classified: follicular, extrafollicular, and peripheral. Case presentation: The case concerns a 22-year-old 8-month-old male patient, with no significant pathological history, who has presented painless bulging in the left paranasal region for 1 year. He goes to dentistry at the Carlos Andrade Marín Hospital, where a panoramic X-ray is performed and an OD 23 (piece 23 that has not erupted) is evidenced, the lesion is related to the orbit, a cystic formation is observed that encompasses the maxilla and maxillary sinus of the left side. Also, the bulge takes up the middle third of the facial region. Discussion: The adenomatoid odontogenic tumor is considered a benign neoplasm that grows progressively and slowly. The treatment of this lesion is enucleation and curettage of the affected area without observing recurrence.

Quality of Life and Maxillary Defects: A Cross-Sectional Study / Calidad de Vida y Defectos Maxilares: Un Estudio Transversal

ABSTRACT: There has been little discussion about the quality of life of patients with maxillary defects. This article evaluates the issues related to the condition. We performed a cross-sectional study of patients with maxillary defects from referral centers in Brazil. To avoid subject burden, a questionnaire was developed, based on questions from seven instruments, which dealt with domains and conclusions that were similar to those from other studies. The predictor variable was the patients' score for each question. The outcome measure was the presence of the best-ranked items on the questionnaire as the impact factor. Six experts assessed these items and suggested which questions to include or exclude. Patients scored each item according to its occurrence and importance. Descriptive statistics and the items' rank according to the impact factor were computed to determine whether there is a comprehensive instrument available. Thirteen patients and six professionals were included in this study. The patients' age ranged from 24 to 72 years (mean (standard deviation, SD), 50.41 (14.46) years). We obtained a 60-item instrument from the selected questionnaires and subject interviews. Only 12 (37.5 %) out of the 32 best-rated items were verified by the existing instruments, two (6.25 %) were suggested by professionals and 18 (56.25 %) were conclusions from other studies. To the best of our knowledge, this is the first study to provide many features related to the quality of life in patients with maxillary defects.

RESUMEN: Existe escasa discusión en la literatura sobre la calidad de vida de los pacientes con defectos maxilares. Este artículo evalúa los problemas relacionados con esta condición. Realizamos un estudio transversal de pacientes con defectos maxilares de centros de referencia en Brasil. Se desarrolló un cuestionario basado en preguntas de siete instrumentos, que trataba sobre dominios y conclusiones similares a las de otros estudios. La variable de estimación fue la puntuación de los pacientes para cada pregunta. La medida de resultado fue la presencia de los elementos mejor clasificados en el cuestionario como factor de impacto. Seis expertos evaluaron estos ítems y sugirieron qué preguntas incluir o excluir. Los pacientes puntuaron cada ítem según su ocurrencia e importancia. Se calcularon las estadísticas descriptivas y la clasificación de los ítems según el factor de impacto, para determinar si existe un instrumento completo. Trece pacientes y seis profesionales fueron incluidos en este estudio. La edad de los pacientes osciló entre 24 y 72 años [media (desviación estándar), 50,41 (14,46) años]. Obtuvimos un instrumento de 60 ítems de los cuestionarios y entrevistas de temas seleccionados. Solo 12 (37,5 %) de los 32 ítems mejor calificados se verificaron de acuerdo a los instrumentos existentes, dos (6,25 %) fueron sugeridos por profesionales y 18 (56,25 %) fueron conclusiones de otros estudios. De acuerdo a nuestro conocimiento, este es el primer estudio que proporciona características relacionadas con la calidad de vida en pacientes con defectos maxilares.

Application of a modified paramedian lower lip-submandibular approach in maxillary (subtotal) total resection / 华西口腔医学杂志

OBJECTIVE@#To investigate the clinical efficacy of a modified paramedian lower lip-submandibular approach for maxillary (subtotal) total resection.@*METHODS@#Eleven patients of maxillary tumors underwent maxillary (subtotal) total resection through the modified paramedian lower lip-submandibular approach. Clinical follow-up visits were conducted to evaluate appearance restoration, facial nerve functional status, parotid gland functional status, and orbital region complication.@*RESULTS@#During the follow-up period of 6-36 months, the appearance of all 11 patients recovered well. All cases presented hidden scars. No facial nerve and parotid duct injury, lower eyelid edema, lower eyelid ectropion, or epiphora in all cases was observed.@*CONCLUSIONS@#Applying modified paramedian lower lip-submandibular approach to maxillary (subtotal) total resection effectively reduces incidence of orbital region complications including lower eyelid edema, lower eyelid ectropion, and epiphora, which often occur to traditional approach. The modified approach produces more subtle scars than other methods and should be applied to treatment of maxillary (subtotal) total resection.

Ameloblastic fibro-odontoma in an unusual area of the maxilla: two case reports / Fibro-odontoma ameloblástico en una región inusual de los maxilares: reporte de dos casos

Ameloblastic fibro-odontoma (AFO) is a mixed odontogenic tumor, which has an epithelial and mesenchymal component. It can be observed in imaging tests as a radiomixed lesion, with some authors claiming it represents only the predecessor of an odontoma. Epidemiologically, it appears between the second and third decade of life, predominantly in males and with a predilection for the posterior area of the mandible. This lesion presents a good prognosis and it responds well to enucleation by curettage with a low rate of recurrence. In the present article, two cases of ameloblastic fibro-odontoma in an unusual region of the maxilla are presented.

El Fibro-odontoma ameloblástico (FOA), es una lesión tumoral mixta de origen odontogénico, el cual tiene un componente epitelial y mesenquimático. En su imagenología se observa como una lesión radiomixta, debido a que algunos autores afirman que este no es más que el predecesor de un odontoma. Epidemiológicamente, se presenta entre la segunda y tercera década de la vida, preferencia por sexo masculino y predilección por el área posterior de la mandíbula. Es una lesión de buen pronóstico que responde bien a la enucleación por curetaje con baja tasa de recidiva. En el presente artículo, se presentan dos casos de fibro-odontoma ameloblástico en una región inusual de los maxilares.

Conservative treatment of odontogenic fibromixoma in maxilla with 11-year follow-up: case report

Introduction: Odontogenic mixomas (OMs) are a locally infiltrating slow-growing intraosseous nonmetastasizing tumors of the maxilla and the mandible that have the potential for bone des-truction and cortical expansion, showing high recurrence rates. Their frequency varies around the world, accounting for 3-20% of all odontogenic tumors, ranking third among odontogenic tumors. They predominantly affect young adults, but may occur in various age groups. Report: A 37-year-old female patient who in August 2005 sought treatment at the Maxillofacial Dental Unit at Hospital Higueras, Talcahuano, Chile, for a left maxillary bone lesion. An increase in vo-lume was observed in the left maxillary region in the clinical analysis of the oral cavity. The neo-plasm was sessile and painless, measuring approximately 3 cm, with a greater diameter in the vestibule, firm on palpation and without signs of gangliopathy. Computed cone beam tomogra-phy imaging showed an extensive infiltrating osteolytic lesion in the left maxillary sinus, with noinvolvement of the orbital bone structure. Analysis of incisional biopsy yielded the diagnosis ofOdontogenic Fibromixoma. It was proposed to perform the conservative treatment of the lesion,consisting of enucleation and surgical curettage, obtaining excellent postoperative results and absence of relapse after 11-year follow-up. Conclusion: The present case report provides eviden-ce that supports the conservative surgical approach for the treatment of odontogenic myxomas, which contributes to a better postoperative quality of life for the patient.

Fibromixoma Odontogénico Agresivo en Maxila: Abordaje Quirúrgico / Aggressive Odontogenic Fibromixoma in Maxilla: Surgical Approach

RESUMEN: El fibromixoma odontogénico (FM) es una infrecuente lesión benigna que muestra un comportamiento invasivo. Considerada una variante del mixoma odontogénico, presenta un origen mesenquimal controvertido y ligera predilección por el sexo femenino. La lesión está asociada a zonas con estructuras dentales adyacentes, siendo su localización más frecuente la región mandibular posterior. El objetivo de este trabajo fue mostrar un caso agresivo de FM en una paciente, localizado en la zona posterior de maxila, destacando su abordaje quirúrgico. Se reporta un caso de una mujer de 52 años, la cual acudió a la consulta por presentar una masa indolora, firme a la palpación en el lado derecho de la maxila. Radiográficamente se observaba como una imagen radiopaca, de márgenes mal definidos que se extendía en el seno maxilar ipsilateral; la tomografía computarizada pudo evidenciar la expansión de las paredes del antro y la fosa nasal, con compromiso del cigomático y el piso de órbita. Se realizó biopsia incisional y el diagnóstico histopatológico fue de FM. El tratamiento de elección consistió en la resección en bloque, mediante abordaje Weber-Fergusson, acompañada de reconstrucción con placa y malla de titanio para garantizar la suspensión del globo ocular; un nuevo estudio histopatológico, confirmó el diagnóstico inicial. Al año del procedimiento quirúrgico no se evidenció recidiva, observando que el material de reconstrucción mantiene su posición, proporcionado estética y funcionabilidad a la paciente.

ABSTRACT: Odontogenic fibromyxoma (FM) is an infrequent benign lesion that shows with invasive characteristics. Considered a variant of the odontogenic myxoma, it presents a controversial mesenchymal origin and is somewhat more frequent in women. The lesion is associated with areas with adjacent dental structures, with its most frequent location in the posterior mandibular region. The objective of this study was to show an aggressive case of FM in a female, located in the posterior area of the maxilla, emphasizing its surgical approach. A case of a 52-year-old woman, who came to the clinic because of a painless, firm mass on the right side of the maxilla. Radiographically, it was seen as a radiopaque image, with poorly defined margins extending in the ipsilateral maxillary sinus; computed tomography showed the expansion of the walls of the antrum and the nasal cavity, with zygomatic compromise and the orbital floor. An incisional biopsy was performed and the histopathological diagnosis was FM. The treatment of choice consisted of block resection, using a WeberFerguson approach, along with reconstruction with a titanium plaque and mesh to guarantee suspension of the eyeball; a new histopathological study, confirmed the initial diagnosis. One year after the surgical procedure, there is no recurrence, and the reconstruction material maintains its position, providing aesthetic and functionality to the patient.

Odontoma composto associado a incisivo central superior impactado: relato de caso / Compound odontoma associated with impacted upper central incisor: case report

Introdução: o odontoma é um tipo de tumor do epitélio odontogênico com ectomesênquima, podendo estar relacionado à presença de dentes não irrompidos. O tratamento consiste em excisão cirúrgica da lesão. Nor-malmente, dentes impactados são assintomáticos, sendo descobertos em radiografias de rotina. A impactação é causada por fatores sistêmicos ou etiológicos locais. Objetivo: reportar um caso clínico de uma criança com impactação dentária de um incisivo central superior esquerdo associado a um odontoma, enfatizando e discutindo a técnica cirúrgica e o planejamento realizado. Relato de caso: paciente de 13 anos de idade, do gênero feminino, com a não erupção do incisivo central superior esquerdo, ao exame clínico, apresentou ausência clínica do dente 21, persistência do dente 61 e um discreto aumento de volume entre os elementos 61 e 22. Foi solicitada uma tomografia computadorizada de feixe cônico (cone beam) da região, na qual se diagnosticou a presença de uma massa radiopaca envolta por um halo radiolúcido sugestivo de odontoma composto, alterando a posição e impedindo a erupção do dente 21, que se encontrava em posição transal-veolar. O plano de tratamento proposto foi remoção cirúrgica do odontoma e tracionamento do dente não irrompido. Conclusão: a remoção cirúrgica de patologias associadas e as manobras referentes aos dentes envolvidos devem ser realizadas no momento mais oportuno e com adequado planejamento, evitando lesões a estruturas nobres e permitindo, assim, um processo de reparo adequado e uma completa restauração da saúde bucal do paciente. (AU)

Introduction: Odontoma is a type of tumor of the odontogenic epithelium with ectomesenchyme and it may be related to the presence of unerupted teeth. The treatment consists of surgical excision of the lesion. Usually, unerupted teeth are asymptomatic and discovered in routine radiographs. Impaction is caused by local systemic or etiological factors. Objective: The present study aims to report a clinical case of a child with an impacted upper central incisor associated with an odontoma, highlighting and discussing the surgical technique and treatment planning. Case report: A 13-year-old female patient without eruption of the left upper central incisor. After clinical examination, the absence of tooth 21, persistence of tooth 61, and a discrete volume increase between elements 61 and 22 were observed. A cone beam computed tomography of the region was requested, which diagnosed the presence of a radiopaque mass involved by a radiolucent halo suggestive of compound odontoma. This condition changed the position and prevented the eruption of tooth 21, which was found in a transalveolar position. The treatment plan proposed was the surgical removal of the odontoma and orthodontic traction of the unerupted tooth. Conclusion: The surgical removal of associated pathologies and maneuvers related to the teeth involved should be performed in a timely manner, with adequate planning, preventing lesions in noble structures, thus allowing an adequate repair process and a complete restoration of the oral health of the patient. (AU)

Ameloblastoma sólido multiquístico en mandibula y reconstrucción con placa de titanio / Solid multicystic ameloblastoma in jaw and reconstruction with titanium plate

El ameloblastoma sólido multiquístico es una neoplasia odontogénica rara, representa el 1% de los tumoresmaxilares, es de crecimiento lento y muestra un comportamiento agresivo local; en estado avanzado es capaz de generar deformidad facial, dolor, infección de la lesión, ulceración de la mucosa, pérdida dentaria, parestesia y puede alterar la masticación y la fonética. Objetivo: determinar las características clínicas, imagenológicas e histológicas del ameloblastoma para realizar el diagnóstico correcto y tratamiento oportuno. Presentación de caso clínico: p aciente femenina de 66 años, tratada en el servicio de cirugía oral y maxilofacial del Hospital Escuela Universitario, por presentar lesión de aspecto tumoral en cavidad bucal y región mandibular izquierda de 4 años de evolución. Los resultados deexámenes complementarios confirmaron que se trataba de un ameloblastoma sólido multiquístico. Se extirpó el tumor con amplios márgenes de seguridad mediante hemimandibulectomía y reconstrucción posterior con placa de titanio 2.4 W Lorenz. Conclusión: Los ameloblastomas son neoplasias benignas que presentan comportamientos clínicos similares con debe establecer un diagnóstico diferencial exhaustivo, auxiliándose de los exámenes complementarios pertinentes para iniciar el tratamiento adecuado y oportuno...(AU)

Lesiones óseas multicéntricas por trastorno paratiroideo: Reporte de un caso clínico / Multicentric Bone Lesions Due to Parathyroid Disease: A Case Report

Resumen Introducción: El hiperparatiroidismo (Hpt) es un desorden endócrino que crea condiciones de hipersecreción de la hormona paratiroidea, propicias para el asentamiento de tumores en el tejido óseo. Si bien no es frecuente, los huesos maxilares, pueden estar involucrados en la patogenia de estas lesiones. Pacientes y métodos: En este trabajo, se presenta un caso clínico de una paciente femenina de 56 años de edad, con lesiones óseas multicéntricas maxilares y extramaxilares a predominio de células gigantes, vinculado a un hiperparatiroidismo. Discusión: El diagnóstico de un Tumor Pardo del Hiperparatiroidismo (TPH) es difícil en la clínica estomatológica, donde la metodología de diagnóstico debe reunir criterios serológicos, clínicos e histopatológicos. La multifocalidad de las lesiones, hacen a este caso un verdadero síndrome endócrino, siendo éste el aspecto más importante. Esta entidad, de incumbencia en la Endocrinología y en la Medicina Bucal, debe ser tratada fundamentalmente de forma interdisciplinar para lograr un tratamiento exitoso.

Abstract Introduction: Hyperparathyroidism is an endocrine disorder that could create parathyroid hormone hypersecretion conditions, propitious for bone tumors development. Although is not frequent, maxillary bones may be involved in the pathogenesis of these lesions. PATIENTS AND METHODS: In this case, a 56-year-old female is reported. An Hyperparathyroidism was diagnosed due to multiple maxillary and extra-maxillary multicentric bone lesions, with a predominance of giant cells, linked to her endocrine disorder. Discussion: The diagnosis of a Hyperparathyroidism Brown Tumor must meet serological, clinical and histopathological criteria. The multifocality of the lesions is the most remarkable clinical aspect in this case. For an adequate treatment of this entity is necessary an interdisciplinary and coordinate work between different areas of healthcare physicians and Oral Medicine specialist.

Management of compound odontoma with guided bone regeneration: a case report

An odontoma is a mixed benign odontogenic tumor, being a hamartomatous neoplastic lesion of odontogenic epithelial and mesenchymal cells that form enamel, dentine and cement, which occurs in the second to third decade of life, and is commonly a radiographic finding. The aim of this paper is to describe the management of a compound odontoma with guided bone regeneration. A 20-year-old asymptomatic male patient with no relevant surgical medical history underwent surgery for the enucleation of a compound odontoma followed by guided bone regeneration of the defect, and histopathological study of the specimen. The evolution was favorable, without any sign of recurrence. It is important to carry out a previous surgical plan, taking into account the size of the defect resulting from its enucleation, assess the need for guided bone regeneration and use complementary diagnostic resources for a satisfactory recovery.

Clinical and immunohistochemical study of melanotic neuroectodermal tumor of infancy in the maxilla / Estudo clínico e imuno-histoquímico de tumor neuroectodérmico melanocítico da infância em maxila

ABSTRACT Melanotic neuroectodermal tumor of infancy is a rare and fast-growing neoplasm. In this study, we describe the case of a 6-month-old female patient, who presented swelling in the anterior maxilla. Tomographic reconstruction showed an unilocular hypodense and expansive area associated with the upper right central primary incisor. The presumptive diagnoses were dentigerous cyst, adenomatoid odontogenic tumor, melanotic neuroectodermal tumor of infancy and rhabdomyosarcoma, and an incisional biopsy was performed. Microscopically, the lesion revealed a biphasic cell population, consisting of small, ovoid, neuroblastic-like cells and epithelioid cells containing melanin. Immunohistochemically, the melanocyte-like component was strongly and diffusely positive for HMB-45 and Melan-A, but weakly positive for S100. Based on these findings, definitive diagnosis of melanotic neuroectodermal tumor of infancy was established. Then, enucleation of the lesion was performed by careful curettage. After 2 year follow-up, no clinical or radiographical evidence of recurrence was verified. The present case highlights the importance of early diagnosis and therapeutic intervention at the appropriate time to achieve a favorable outcome for the patient.

RESUMO O tumor neuroectodérmico melanocítico da infância é uma neoplasia rara e de crescimento rápido. Neste estudo, relata-se o caso de uma paciente do sexo feminino de 6 meses de idade, que apresentou tumefação na região anterior de maxila. A reconstrução tomográfica revelou área unilocular hipodensa e expansiva associada ao incisivo central superior direito decíduo. Realizou-se biópsia incisional, considerando as hipóteses diagnósticas de cisto dentígero, tumor odontogênico adenomatoide, tumor neuroectodérmico melanocítico da infância e rabdomiossarcoma. Microscopicamente, a lesão revelou população celular bifásica, consistindo de células pequenas, ovoides, de aparência neuroblástica, e de células epitelioides, contendo melanina. A análise imuno-histoquímica demonstrou que o componente celular contendo melanina era positivo de forma intensa e difusa para HMB-45 e Melan-A, mas levemente positivo para S100. Com base nestes achados, foi estabelecido o diagnóstico definitivo de tumor neuroectodérmico melanocítico da infância. Em seguida, foi realizada a enucleação da lesão com curetagem cuidadosa. Após 2 anos de acompanhamento, não foram verificadas evidências clínicas ou radiográficas de recorrência. O presente caso destaca a importância do diagnóstico precoce e da intervenção terapêutica no momento apropriado, a fim de alcançar um desfecho favorável para o paciente.