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1.
Int. j. morphol ; 38(1): 159-164, Feb. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1056415

ABSTRACT

El hueso cigomático, ubicado en la parte superior y lateral de la cara, es un hueso par e irregular con forma cuadrilátera o romboidal. Se describen 2 caras, 4 aristas y 4 ángulos, forma cavidades, permite la inserción muscular y aponeurótica, es parte de la arquitectura facial, distribuye las fuerzas masticatorias y permite el paso del nervio cigomático. Su margen postero-superior presenta una prominencia ósea conocida como tubérculo marginal, en el que se observa la inserción de la fascia temporal. El objetivo de este trabajo fue describir las características particulares de esta prominencia. La muestra correspondió a 30 cráneos de adultos chilenos de ambos sexos. A través de una serie de puntos óseos, se describió la presencia, ubicación, tamaño, forma, cortical y trabeculado del tejido óseo del tubérculo marginal. Para realizar las mediciones se utilizaron cámara digital, compas de precisión y cáliper digital. El análisis radiográfico requirió tomografía computarizada de alta resolución. Los resultados mostraron que el tubérculo marginal del hueso cigomático es una prominencia constante, ubicada en el tercio medio del proceso frontal del hueso y que la mayoría de los individuos mostraron una forma semilunar. Su altura fluctúa entre 3 y 4 mm, siendo más pronunciada en hombres que en mujeres. El grosor de la corteza ósea es directamente proporcional a la prominencia del tubérculo, mientras que el trabeculado esponjoso está inversamente relacionado con este último. El análisis de estos resultados parece indicar que las fuerzas biomecánicas ejercidas por la musculatura masticatoria y transmitidas por la fascia temporal, determinan la morfología externa e interna de esta prominencia y del propio hueso cigomático. Concluimos, declarando la necesidad de revisar el conocimiento anatómico a la luz de las nuevas técnicas de imagen e integración disciplinar.


The zygomatic bone, located in the upper and lateral area of the face, is an even and irregular quadrilateral or rhomboid shaped bone. It presents 2 faces, 4 margins and 4 angles. It forms cavities, allows muscular and aponeurotic insertion, is part of the facial architecture, distributes masticatory forces and allows the passage of the zygomatic nerve. Its postero-superior margin presents a bony prominence known as a marginal tubercle, in which the insertion of the temporal fascia is observed. The objective of this work was to describe the particular characteristics of this prominence. The sample corresponded to 30 skulls of Chilean adults of both sexes. Through a series of bone points, the presence, location, size, shape, cortical and trabeculate of the bone tissue of the marginal tubercle was described. A digital camera, precision compass and digital caliper were used to perform the measurements. The radiographic analysis required high-resolution computed tomography. The results showed that the marginal tubercle of the zygomatic bone is a constant prominence, located in the middle third of the frontal process of the bone and that most individuals showed a semilunar shape. Its height fluctuated between 3 and 4 mm, being more pronounced in men than in women. The thickness of the bone cortex was directly proportional to the prominence of the tuber, while the spongy trabeculate was inversely related to the latter. The analysis of these results seems to indicate that the biomechanical forces exerted by the masticatory musculature and transmitted by the temporal fascia, determine the external and internal morphology of this prominence, and of the zygomatic bone itself. In conclusion, it is recommended to review anatomical knowledge in the light of new imaging techniques and disciplinary integration.


Subject(s)
Humans , Male , Female , Zygoma/anatomy & histology , Facial Bones/anatomy & histology
2.
Rev. otorrinolaringol. cir. cabeza cuello ; 78(2): 161-166, jun. 2018. ilus
Article in Spanish | LILACS | ID: biblio-961609

ABSTRACT

RESUMEN El angiofibroma nasofaríngeo es el tumor benigno más frecuente de la nasofaringe, representando el 0,05% del total de las neoplasias de cabeza y cuello. Los angiofibromas en localizaciones distintas a la nasofaringe son entidades raras. Ellos son descritos esporádicamente en la literatura, ubicándose principalmente en el seno maxilar. En este artículo presentamos un caso de fibroangioma extranasofaríngeo localizado en fosa temporal derecha seguido de una revisión de literatura.


ABSTRACT Nasopharyngeal angiofibroma is the most common benign tumor of the nasopharynx, representing 0.05% of total neoplasms of the head and neck. Extranasopharyngeal angiofibromas are rare entities described sporadically in the literature, being located mainly in the maxillary sinus. We present a case of an extra-nasopharyngeal fibroangioma located in the right temporal fossa followed by a literature review.


Subject(s)
Humans , Female , Middle Aged , Nasopharyngeal Neoplasms/radiotherapy , Nasopharyngeal Neoplasms/diagnostic imaging , Angiofibroma/radiotherapy , Angiofibroma/diagnostic imaging , Magnetic Resonance Spectroscopy , Nasopharyngeal Neoplasms/pathology , Treatment Outcome , Angiofibroma/pathology , Head and Neck Neoplasms/radiotherapy , Head and Neck Neoplasms/diagnostic imaging
3.
Int. j. morphol ; 32(1): 208-213, Mar. 2014. ilus, tab
Article in English | LILACS | ID: lil-708748

ABSTRACT

The pterion is an important landmark on the side of the skull as it overlies both the anterior branch of the middle meningeal artery and the lateral cerebral fissure intracranially. The study was carried out to determine the pterion types and define its distances to some neighboring structures in dry human skulls of Southern Nigerians. The study comprised 50 dry human skulls of unknown sex and age obtained from selected Nigerian Universities. Sutural patterns of the pterion on both sides of each skull based on the description of Murphy (1956), were observed and recorded. Distances of the pterion to neighboring structures were also measured using digital vernial caliper. Data obtained were subjected to statistical analysis using descriptive statistics and chi-square contingency table with the aid of the statistical package for social sciences (SPSS) version 16. P<0.05 is considered statistically significant. Results showed that the most common type of Pterion in Nigerian skulls was sphenoparietal. There was no significant association between side of the head and pterion type. The mean distance of the pterion to the frontozygomatic suture was 31.56±2.47 mm taking both side together, (left side = 31.08±2.24 mm; right side = 32.06±2.62 mm). The mean distance of the pterion to the midpoint of the zygomatic arch was 39.87±3.16 mm taking both sides together (left side = 39.52±3.32 mm; right side = 40.22±2.98 mm). The mean distance of the pterion to the glabella was 77.51±4.08 mm taking both side together (left side = 76.74±4.27 mm; right side = 78.27±3.77 mm). This will be useful in Surgery, Anthropology and for assessing the location of the pterion in incomplete archeological remains or forensic materials.


El pterion es un importante marcador del lado del cráneo, ya que se superpone a la rama anterior de la arteria meníngea media y a la cisura cerebral lateral por vía intracraneal. El estudio se realizó para determinar el tipo de pterion y definir las distancias con algunas estructuras cercanas, en cráneos humanos secos de nigerianos del Sur. Se utilizaron 50 cráneos humanos sin información de sexo y edad, obtenidos de Universidades. Fueron observados y registrados los patrones suturales del pterion en ambos lados de cada cráneo, basados en la descripción de Murphy en 1956. También se midieron las distancias del pterion hacia estructuras cercanas utilizando un cáliper digital. Los datos obtenidos fueron sometidos a análisis estadístico mediante estadística descriptiva y prueba de chi cuadrado con el programa estadístico SPSS versión 16. Un valor P<0,05 se consideró significativo. El tipo más común de pterion en cráneos de Nigeria fue esfenoparietal. No hubo asociación significativa entre el lado del cráneo y el tipo pterion. La distancia media del pterion a la sutura frontocigomática fue 31,56±2,47 mm (al lado izquierdo = 31,08±2,24 mm, al derecho = 32,06±2,62 mm). La distancia media del pterion hasta el punto medio del arco cigomático fue 39,87±3,16 mm (al lado izquierdo = 39,52±3,32 mm; al derecho = 40,22±2,98 mm). La distancia media del pterion a la glabela fue 77,51±4,08 mm (al lado izquierdo = 76,74±4,27 mm, al derecho = 78,27±3,77 mm). Esta información es útil para la cirugía y antropología, así como también en la evaluación de la ubicación del pterion en restos arqueológicos incompletos o material forense.


Subject(s)
Humans , Skull/anatomy & histology , Sphenoid Bone/anatomy & histology , Temporal Bone/anatomy & histology , Black People , Nigeria
4.
Korean Journal of Neurotrauma ; : 154-156, 2013.
Article in English | WPRIM | ID: wpr-142796

ABSTRACT

Temporal fossa hollowing can represent a serious cosmetic concern to patients after post-traumatic surgery, oncological resection, or surgical dissection for obtaining access to the temporal area. Various methods have been described to augment temporal fossa hollowing, such as use of autogenous bone and cartilage implants, high-density polyethylene implants, and dermal fat grafts. We report a case of 22-year-old man with temporal fossa hollowing after post-traumatic surgery, including temporal muscle resection, whose defect was augmented by using titanium mesh even though long after cranioplasty.


Subject(s)
Humans , Young Adult , Cartilage , Methods , Polyethylene , Temporal Muscle , Titanium , Transplants
5.
Korean Journal of Neurotrauma ; : 154-156, 2013.
Article in English | WPRIM | ID: wpr-142793

ABSTRACT

Temporal fossa hollowing can represent a serious cosmetic concern to patients after post-traumatic surgery, oncological resection, or surgical dissection for obtaining access to the temporal area. Various methods have been described to augment temporal fossa hollowing, such as use of autogenous bone and cartilage implants, high-density polyethylene implants, and dermal fat grafts. We report a case of 22-year-old man with temporal fossa hollowing after post-traumatic surgery, including temporal muscle resection, whose defect was augmented by using titanium mesh even though long after cranioplasty.


Subject(s)
Humans , Young Adult , Cartilage , Methods , Polyethylene , Temporal Muscle , Titanium , Transplants
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