Maxillary Neoplasms: Cancer or tumors of the MAXILLA or upper jaw.Maxillary Sinus: The air space located in the body of the MAXILLARY BONE near each cheek. Each maxillary sinus communicates with the middle passage (meatus) of the NASAL CAVITY on the same side.Maxilla: One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS.Maxillary Sinusitis: Inflammation of the NASAL MUCOSA in the MAXILLARY SINUS. In many cases, it is caused by an infection of the bacteria HAEMOPHILUS INFLUENZAE; STREPTOCOCCUS PNEUMONIAE; or STAPHYLOCOCCUS AUREUS.Maxillary Sinus Neoplasms: Tumors or cancer of the MAXILLARY SINUS. They represent the majority of paranasal neoplasms.Maxillary Nerve: The intermediate sensory division of the trigeminal (5th cranial) nerve. The maxillary nerve carries general afferents from the intermediate region of the face including the lower eyelid, nose and upper lip, the maxillary teeth, and parts of the dura.Maxillary Artery: A branch of the external carotid artery which distributes to the deep structures of the face (internal maxillary) and to the side of the face and nose (external maxillary).Maxillary DiseasesIncisor: Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820)Palatal Expansion Technique: An orthodontic method used for correcting narrow or collapsed maxillary arches and functional cross-bite. (From Jablonski's Dictionary of Dentistry),Cuspid: The third tooth to the left and to the right of the midline of either jaw, situated between the second INCISOR and the premolar teeth (BICUSPID). (Jablonski, Dictionary of Dentistry, 1992, p817)Dental Arch: The curve formed by the row of TEETH in their normal position in the JAW. The inferior dental arch is formed by the mandibular teeth, and the superior dental arch by the maxillary teeth.Molar: The most posterior teeth on either side of the jaw, totaling eight in the deciduous dentition (2 on each side, upper and lower), and usually 12 in the permanent dentition (three on each side, upper and lower). They are grinding teeth, having large crowns and broad chewing surfaces. (Jablonski, Dictionary of Dentistry, 1992, p821)Tooth, Impacted: A tooth that is prevented from erupting by a physical barrier, usually other teeth. Impaction may also result from orientation of the tooth in an other than vertical position in the periodontal structures.Cephalometry: The measurement of the dimensions of the HEAD.Tooth Eruption, Ectopic: An abnormality in the direction of a TOOTH ERUPTION.Bicuspid: One of the eight permanent teeth, two on either side in each jaw, between the canines (CUSPID) and the molars (MOLAR), serving for grinding and crushing food. The upper have two cusps (bicuspid) but the lower have one to three. (Jablonski, Dictionary of Dentistry, 1992, p822)Paranasal Sinus Diseases: Diseases affecting or involving the PARANASAL SINUSES and generally manifesting as inflammation, abscesses, cysts, or tumors.Mandible: The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.Tooth Movement: Orthodontic techniques used to correct the malposition of a single tooth.Tooth Crown: The upper part of the tooth, which joins the lower part of the tooth (TOOTH ROOT) at the cervix (TOOTH CERVIX) at a line called the cementoenamel junction. The entire surface of the crown is covered with enamel which is thicker at the extremity and becomes progressively thinner toward the cervix. (From Jablonski, Dictionary of Dentistry, 1992, p216)Malocclusion, Angle Class III: Malocclusion in which the mandible is anterior to the maxilla as reflected by the first relationship of the first permanent molar (mesioclusion).Odontometry: Measurement of tooth characteristics.Dental Models: Presentation devices used for patient education and technique training in dentistry.Tooth Root: The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)Palate: The structure that forms the roof of the mouth. It consists of the anterior hard palate (PALATE, HARD) and the posterior soft palate (PALATE, SOFT).Pancreatic Neoplasms: Tumors or cancer of the PANCREAS. Depending on the types of ISLET CELLS present in the tumors, various hormones can be secreted: GLUCAGON from PANCREATIC ALPHA CELLS; INSULIN from PANCREATIC BETA CELLS; and SOMATOSTATIN from the SOMATOSTATIN-SECRETING CELLS. Most are malignant except the insulin-producing tumors (INSULINOMA).Alveolar Process: The thickest and spongiest part of the maxilla and mandible hollowed out into deep cavities for the teeth.Tooth, Unerupted: A normal developing tooth which has not yet perforated the oral mucosa or one that fails to erupt in the normal sequence or time interval expected for the type of tooth in a given gender, age, or population group.Malocclusion: Such malposition and contact of the maxillary and mandibular teeth as to interfere with the highest efficiency during the excursive movements of the jaw that are essential for mastication. (Jablonski, Illustrated Dictionary of Dentistry, 1982)Orthodontic Appliances: Devices used for influencing tooth position. Orthodontic appliances may be classified as fixed or removable, active or retaining, and intraoral or extraoral. (Boucher's Clinical Dental Terminology, 4th ed, p19)Maxillary Osteotomy: Surgery of the upper jaw bone usually performed to correct upper and lower jaw misalignment.Orthodontic Appliance Design: The planning, calculation, and creation of an apparatus for the purpose of correcting the placement or straightening of teeth.Neoplasms: New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.Extraoral Traction Appliances: Extraoral devices for applying force to the dentition in order to avoid some of the problems in anchorage control met with in intermaxillary traction and to apply force in directions not otherwise possible.Maxillary Fractures: Fractures of the upper jaw.Facial Bones: The facial skeleton, consisting of bones situated between the cranial base and the mandibular region. While some consider the facial bones to comprise the hyoid (HYOID BONE), palatine (HARD PALATE), and zygomatic (ZYGOMA) bones, MANDIBLE, and MAXILLA, others include also the lacrimal and nasal bones, inferior nasal concha, and vomer but exclude the hyoid bone. (Jablonski, Dictionary of Dentistry, 1992, p113)Maxillofacial Development: The process of growth and differentiation of the jaws and face.Palate, Hard: The anteriorly located rigid section of the PALATE.Tooth Extraction: The surgical removal of a tooth. (Dorland, 28th ed)Radiography, Panoramic: Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film.Denture, Complete, Upper: A complete denture replacing all the natural maxillary teeth and associated maxillary structures. It is completely supported by the oral tissue and underlying maxillary bone.Malocclusion, Angle Class II: Malocclusion in which the mandible is posterior to the maxilla as reflected by the relationship of the first permanent molar (distoclusion).Tooth Apex: The tip or terminal end of the root of a tooth. (Jablonski, Dictionary of Dentistry, 1992, p62)Neoplasms, Cystic, Mucinous, and Serous: Neoplasms containing cyst-like formations or producing mucin or serum.Dental Pulp Cavity: The space in a tooth bounded by the dentin and containing the dental pulp. The portion of the cavity within the crown of the tooth is the pulp chamber; the portion within the root is the pulp canal or root canal.Tooth Eruption: The emergence of a tooth from within its follicle in the ALVEOLAR PROCESS of the MAXILLA or MANDIBLE into the ORAL CAVITY. (Boucher's Clinical Dental Terminology, 4th ed)Vertical Dimension: The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (OVD or VDO) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (VDR) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest position. (From Jablonski, Dictionary of Dentistry, 1992, p250)Orthodontics, Corrective: The phase of orthodontics concerned with the correction of malocclusion with proper appliances and prevention of its sequelae (Jablonski's Illus. Dictionary of Dentistry).Dentition, Mixed: The complement of teeth in the jaws after the eruption of some of the permanent teeth but before all the deciduous teeth are absent. (Boucher's Clinical Dental Terminology, 4th ed)Orthodontic Retainers: Orthodontic appliances, fixed or removable, used to maintain teeth in corrected positions during the period of functional adaptation following corrective treatment. These appliances are also used to maintain the positions of the teeth and jaws gained by orthodontic procedures. (From Zwemer, Boucher's Clinical Dental Terminology, 4th ed, p263)Jaw, Edentulous: The total absence of teeth from either the mandible or the maxilla, but not both. Total absence of teeth from both is MOUTH, EDENTULOUS. Partial absence of teeth in either is JAW, EDENTULOUS, PARTIALLY.Orthodontic Anchorage Procedures: Attachment of orthodontic devices and materials to the MOUTH area for support and to provide a counterforce to orthodontic forces.Osteotomy, Le Fort: Transverse sectioning and repositioning of the maxilla. There are three types: Le Fort I osteotomy for maxillary advancement or the treatment of maxillary fractures; Le Fort II osteotomy for the treatment of maxillary fractures; Le Fort III osteotomy for the treatment of maxillary fractures with fracture of one or more facial bones. Le Fort III is often used also to correct craniofacial dysostosis and related facial abnormalities. (From Dorland, 28th ed, p1203 & p662)Zygoma: Either of a pair of bones that form the prominent part of the CHEEK and contribute to the ORBIT on each side of the SKULL.Anodontia: Congenital absence of the teeth; it may involve all (total anodontia) or only some of the teeth (partial anodontia, hypodontia), and both the deciduous and the permanent dentition, or only teeth of the permanent dentition. (Dorland, 27th ed)Root Resorption: Resorption in which cementum or dentin is lost from the root of a tooth owing to cementoclastic or osteoclastic activity in conditions such as trauma of occlusion or neoplasms. (Dorland, 27th ed)Neoplasms, Multiple Primary: Two or more abnormal growths of tissue occurring simultaneously and presumed to be of separate origin. The neoplasms may be histologically the same or different, and may be found in the same or different sites.Skin Neoplasms: Tumors or cancer of the SKIN.Paranasal Sinus Neoplasms: Tumors or cancer of the PARANASAL SINUSES.Dentition, Permanent: The 32 teeth of adulthood that either replace or are added to the complement of deciduous teeth. (Boucher's Clinical Dental Terminology, 4th ed)Cone-Beam Computed Tomography: Computed tomography modalities which use a cone or pyramid-shaped beam of radiation.Tooth Fractures: Break or rupture of a tooth or tooth root.Dental Implantation, Endosseous: Insertion of an implant into the bone of the mandible or maxilla. The implant has an exposed head which protrudes through the mucosa and is a prosthodontic abutment.Dental Occlusion: The relationship of all the components of the masticatory system in normal function. It has special reference to the position and contact of the maxillary and mandibular teeth for the highest efficiency during the excursive movements of the jaw that are essential for mastication. (From Jablonski, Dictionary of Dentistry, 1992, p556, p472)Orthodontic Wires: Wires of various dimensions and grades made of stainless steel or precious metal. They are used in orthodontic treatment.Denture Design: The plan, delineation, and location of actual structural elements of dentures. The design can relate to retainers, stress-breakers, occlusal rests, flanges, framework, lingual or palatal bars, reciprocal arms, etc.Tooth, Supernumerary: An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption.Malocclusion, Angle Class I: Malocclusion in which the mandible and maxilla are anteroposteriorly normal as reflected by the relationship of the first permanent molar (i.e., in neutroclusion), but in which individual teeth are abnormally related to each other.Orthodontics, Interceptive: Recognition and elimination of potential irregularities and malpositions in the developing dentofacial complex.Nose Neoplasms: Tumors or cancer of the NOSE.Tooth: One of a set of bone-like structures in the mouth used for biting and chewing.Photography, Dental: Photographic techniques used in ORTHODONTICS; DENTAL ESTHETICS; and patient education.Kidney Neoplasms: Tumors or cancers of the KIDNEY.

Prenatal sonographic features of embryonal rhabdomyosarcoma. (1/187)

We describe a case of fetal rhabdomyosarcoma detected during the third trimester of pregnancy by prenatal sonography. At 33 weeks' gestation, sonography performed because of suspected polyhydramnios showed a solid mass of 120 x 54 mm arising from the anterior wall of the fetal thoracic cage. Another mass within the left maxillary area which originated from the left orbital floor was also detected. In the abdomen, there were multiple round masses in and around the liver. As the previous scan at 28 weeks had appeared normal, the multiple masses which became visible and enlarged rapidly in different locations led us to believe that there was fetal cancer. The most likely diagnosis was rhabdomyosarcoma (which was later confirmed), because it is the most prevalent soft-tissue tumor in children and may develop within or outside muscle anywhere in the body and at any age. Two other reported cases which were detected by prenatal ultrasound examination are also discussed.  (+info)

CT and MR imaging appearances of an extraosseous calcifying epithelial odontogenic tumor (Pindborg tumor). (2/187)

We herein report a rare case of extraosseous calcifying epithelial odontogenic tumor with local aggressive behavior. CT and MR imaging showed the distinctive appearances of this histologic entity. We briefly discuss the radiologic features of calcifying epithelial odontogenic tumor and the relevant literature.  (+info)

Bilateral hyperplasia of the mandibular coronoid processes associated with the nevoid basal cell carcinoma syndrome in an Italian boy. (3/187)

In this report we present a subject affected by nevoid basal cell carcinoma syndrome (NBCCS), showing also bilateral mandibular coronoid processes hyperplasia, a hitherto unreported association. Our observation of bilateral hyperplasia of the mandibular coronoid processes in a boy with NBCCS may prompt a retrospective and prospective review of other patients affected by this syndrome in order to establish if this anomaly is part of it.  (+info)

Ameloblastic fibroma of the anterior maxilla presenting as a complication of tooth eruption: a case report. (4/187)

Ameloblastic fibroma is a rare mixed odontogenic tumour, which is extremely uncommon in the anterior maxillary region. A case report is presented where failure of eruption of an upper central incisor was the presenting feature.  (+info)

The management of cervical lymph nodes in head and neck cencer. (5/187)

It is suggested that the last major improvement in the surgical treatment of head and neck cancer was Crile's description of radical neck dissection in 1906, and that modifications of this procedure, including extended surgery, have made little or no difference to survival rates. It is hoped that some means may soon be found of identifying those patients with head and neck cancer who do badly--the majority. As a start, it is proposed that patients with an antral carcinoma and a gland in the neck, and patients with hypopharyngeal carcinoma and bilateral neck glands should not be treated by surgery. A retrospective analysis is made of matched pairs drawn from a personal series, one patient in each pair having had a prophylactic neck dissection, and one having been submitted to a policy of 'wait and see'. The survival rate for patients undergoing prophylactic neck dissection was worse than that of the wait and see group; this difference was statistically significant.  (+info)

Intraosseous pleomorphic adenoma: case report and review of the literature. (6/187)

Pleomorphic adenoma is the most common neoplasm of the salivary glands, affecting mainly the parotid gland. The preferential intraoral site of this tumor is the palate. A case of a 31-year-old woman with an intraosseous pleomorphic adenoma located in the maxilla (left paramedian region), showing an approximate evolution of one year is reported. The present intraosseous case represents a rare location, with the tumor probably originating from glandular epithelial remnants captured during embryogenesis. In a review of the literature of 142 cases of intragnathic localization (24% in the maxilla) are identified. A slight predominance of women was observed (56%), with 55% of the patients being affected during the 5th to 7th decade of life. The tumors were malignant in 94% of the cases, with special predominance of mucoepidermoid carcinoma (65%). Intraosseous pleomorphic adenomas are rare, with the present patient being the 6th case reported in the literature and the second found in the maxilla. Mean age of the 5 previously reported cases was 58.8 years.  (+info)

3D-CT imaging processing for qualitative and quantitative analysis of maxillofacial cysts and tumors. (7/187)

The objective of this study was to evaluate spiral-computed tomography (3D-CT) images of 20 patients presenting with cysts and tumors in the maxillofacial complex, in order to compare the surface and volume techniques of image rendering. The qualitative and quantitative appraisal indicated that the volume technique allowed a more precise and accurate observation than the surface method. On the average, the measurements obtained by means of the 3D volume-rendering technique were 6.28% higher than those obtained by means of the surface method. The sensitivity of the 3D surface technique was lower than that of the 3D volume technique for all conditions stipulated in the diagnosis and evaluation of lesions. We concluded that the 3D-CT volume rendering technique was more reproducible and sensitive than the 3D-CT surface method, in the diagnosis, treatment planning and evaluation of maxillofacial lesions, especially those with intra-osseous involvement.  (+info)

Anterolateral thigh flap. (8/187)

A 64-year-old Japanese male had a squamous cell carcinoma (T4N1M0) in the left gingival and buccal mucosa, so a radical wide resection involving left radical neck dissection was performed. An anterolateral thigh flap measuring 15 x 8 cm was raised from the left thigh and transferred to the defect. The postoperative course was eventful. There was no postoperative flap necrosis, infection, not even a cervical fistula.  (+info)

  • St. Pierre S, Baker SR. Squamous cell carcinoma of the maxillary sinus: analysis of 66 cases. (
  • Twenty-eight patients with maxillary sinus squamous cell carcinoma, who visited the Otorhinolaryngology Department at Severance Hospital from March, 1993 to February, 2001 and underwent the surgery, were analyzed retrospectively by reviewing clinical medical records and radiologic test results. (
  • For cancer of the maxillary sinus, the nasal cavity, and the ethmoid sinus, the American Joint Committee on Cancer (AJCC) has designated staging by TNM classification. (
  • Even though maxillary sinus is the most common site for the origin of this lesion, angiofibroma arising from the nasal septum is extremely rare. (
  • Nasal papillomas are true neoplasms and, while their etiology is unclear, they are known to arise from the nasal respiratory epithelium, which undergoes metaplastic change and proliferation. (
  • Maxillary and ethmoid sinus are the most commonly involved sites, whereas other localizations such as nasal septum and inferior turbinate are infrequent. (
  • The most common site of occurrence of IP is at the lateral nasal wall and maxillary sinus, followed by ethmoid air cells and nasal septum. (
  • Appropriate diagnosis of the disease causing deformation of the maxillary and frontal bones, sometimes accompanied by lacrimal and nasal bone involvement, may be delayed if the owner assumes the deformity is due to a untreatable disease. (
  • These portions of the maxillary sinus communicate only indirectly through the opening into the nasal passage, i.e. the nasomaxillary aperture. (
  • A 50-year-old women presented to the Otolaryngology Department of our University reporting a three-month progressively worsening history of left maxillary swelling with mild facial pain and left nasal obstruction. (
  • The exam showed a soft tissue mass in the left maxillary sinus measuring 4.6×4.1 cm and extending to the nasal cavity, with signs of bone erosion in the medial and anterior wall of the maxillary sinus. (
  • The objectives of this study were to describe a modified approach for caudal maxillectomy in the dog involving preligation of the maxillary artery, to retrospectively evaluate the ability of this modified approach to limit hemorrhage in a cohort of 22 dogs, and to clarify the vascular anatomy of the maxillary artery and its branches in relation to associated nerves. (
  • Medical records were retrospectively reviewed for cases that had caudal maxillectomy via a combined approach (with or without preligation of the maxillary artery) from January 1, 2004 to December 31, 2019. (
  • Caudal maxillectomy is often part of the treatment plan for caudally located oral neoplasms that have not yet crossed the midline of the hard palate ( 3 , 4 ). (
  • A maxillectomy may also be performed as part of a combined resection of a skull base or nasopharyngeal neoplasm. (
  • We investigated the surgical outcome of radical maxillectomy in advanced maxillary sinus cancers invading through the posterior wall and into the infratemporal fossa. (
  • We strongly recommend the use of radical maxillectomy in the cases of advanced maxillary sinus cancers invading the infratemporal fossa. (
  • Aly Tawfik ,Ebrahim El Dosoky ,Nadia Nada , Maxillary melanotic neuroectodermal tumour of infancy: review of literature, ultrastructural immunohistochemical study and follow-up, J. Egypt. (
  • Myeloproliferative neoplasms are heterogeneous group of clonal hematopoietic stem cell neoplasms with excessive proliferation of one or more of the erythroid, megakaryocytic, or myeloid li. (
  • The purpose of this study is to determine a dose of LY2784544 that may be safely administered to participants with myeloproliferative neoplasms. (
  • Myeloproliferative Neoplasms May Be Sensitive to Dual BET/JAK Inhibition. (
  • In myeloproliferative neoplasms (MPN) chromatin changes promote NF-κB signaling to drive inflammation. (
  • The reported case describes morphological characteristics, clinical course, radiographic and histopathological features, and surgical therapy of an extrafollicular variant of AOT in the maxillary posterior region. (
  • The definitive treatment is surgical with endoscopic uncinectomy and opening of the maxillary ostium. (
  • Intraoral view showing a swelling in the buccal fold of the left maxillary posterior region. (
  • Recently, we experienced a case of oncocytic Schneiderian papilloma of the left maxillary sinus developed in 53-year-old female patient. (
  • The CT scan result showed that the lump mainly located in the left maxillary sinus. (
  • Otolaryngologic examination showed a painful, tough swelling in the left maxillary region. (
  • Approximately one year after starting orthodontic treatment, the patient went to the emergency department because of a phlegmonous tumefaction of the lateroposterior upper left maxillary region. (
  • Diagnostic orthopantomography and axial computed tomography scan results of the facial skeleton revealed a large lesion occupying the left maxillary sinus, rhizolysis of dental elements 26 and 27, and dislocation of dental element 28. (
  • Bone Marrow Neoplasms are cancers that occur in the bone marrow. (
  • Discover the latest research on Bone Marrow Neoplasms here. (
  • Crackles may be taught the proper level of fatigue and shortness of breath instead of a functional maxillary obturator prosthesis improves the integrity of bone. (
  • postsegmental mandibular resection, after following a fully guided staged protocol, which established a systematic approach that correlates the grafted bone and the enclosed implants to the undisturbed mandibular segments and the maxillary occlusal plane. (
  • within its lateral wall are the oculomotor nerve (III), the trochlear nerve (IV), and the ophthalmic and maxillary divisions of the trigeminal nerve (V1, V2). (
  • The lateral extension of pituitary neoplasms into the cavernous sinus usually affects the 3rd cranial nerve, with the 4th and 6th nerves less commonly involved. (
  • These include diminished sinus volume with retraction and inward bowing of the maxillary sinus walls, downward bowing and thinning of the orbital floor and increased orbital volume, near-to-complete sinus opacification, lateral retraction of the uncinate process with apposition of the uncinate against the inferomedial orbital wall, enlargement of the middle meatus and an increased retroantral fat pad (Figure 2). (
  • The ventral conchal sinus communicates with the rostral maxillary sinus on its lateral border at the dorsal aspect of the infraorbital canal. (
  • As stated before, a non-bony swelling in the posterior lateral palate of 20 years' duration is an unlikely presentation for a malignant neoplasm. (
  • By the time ominous signs and symptoms (such as severe intractable headache, visual disturbance, or cranial neuropathy) occur, the neoplasm is often advanced. (