Mucocoele and Mucopyocoele of the Frontal Sinus Penetrating to The
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MR Imaging of the Orbital Apex
J Korean Radiol Soc 2000;4 :26 9-0 6 1 6 MR Imaging of the Orbital Apex: An a to m y and Pat h o l o g y 1 Ho Kyu Lee, M.D., Chang Jin Kim, M.D.2, Hyosook Ahn, M.D.3, Ji Hoon Shin, M.D., Choong Gon Choi, M.D., Dae Chul Suh, M.D. The apex of the orbit is basically formed by the optic canal, the superior orbital fis- su r e , and their contents. Space-occupying lesions in this area can result in clinical d- eficits caused by compression of the optic nerve or extraocular muscles. Even vas c u l a r changes in the cavernous sinus can produce a direct mass effect and affect the orbit ap e x. When pathologic changes in this region is suspected, contrast-enhanced MR imaging with fat saturation is very useful. According to the anatomic regions from which the lesions arise, they can be classi- fied as belonging to one of five groups; lesions of the optic nerve-sheath complex, of the conal and intraconal spaces, of the extraconal space and bony orbit, of the cav- ernous sinus or diffuse. The characteristic MR findings of various orbital lesions will be described in this paper. Index words : Orbit, diseases Orbit, MR The apex of the orbit is a complex region which con- tains many nerves, vessels, soft tissues, and bony struc- Anatomy of the orbital apex tures such as the superior orbital fissure and the optic canal (1-3), and is likely to be involved in various dis- The orbital apex region consists of the optic nerve- eases (3). -
Anatomic Variations of the Nose and Paranasal Sinuses in Saudi Population
234 Original article Anatomic variations of the nose and paranasal sinuses in saudi population: computed tomography scan analysis Nada Alshaikha, Amirah Aldhuraisb aDepartment of Otolaryngology Head & Neck Background Surgery, Rhinology Unit, Dammam Medical Knowledge of the anatomy constitutes an integral part in the total management of Complex (DMC), bDepartment of ENT, King Fahad Specialist Hospital (KFSH), Dammam, patients with sinonasal diseases. The aim of this study was to obtain the prevalence Saudi Arabia of sinonasal anatomic variations in Saudi population and to understand their importance and impact on the disease process, as well as their influence on Correspondence to Nada Alshaikh, MD, Department of Otorhinolaryngology Head and surgical management and outcome. Neck Surgery, Dammam Medical Complex, Materials and methods Dammam - 31414, Saudi Arabia This study is prospective review of retrospectively performed normal computed e-mail: [email protected] tomography (CT) scans of the nose and paranasal sinuses in adult Saudi Received 13 November 2016 population at Dammam Medical Complex. The scans were reviewed by two Accepted 23 December 2016 independent observers. The Egyptian Journal of Otolaryngology Results 2018, 34:234–241 Of all CT scans that were reviewed, 48.4% were of female patients and 51.6% were of male patients. The mean age of the study sample was 38.5±26.5 years. The most common anatomic variation after excluding agger nasi cell was pneumatized crista galli, which was seen in 73% of the scans. However, the least common variation seen in this series was hypoplasia of the maxillary sinus, which was encountered in 5% of the cases. We did not detect a single pneumatized inferior turbinate among the studied scans. -
Septation of the Sphenoid Sinus and Its Clinical Significance
1793 International Journal of Collaborative Research on Internal Medicine & Public Health Septation of the Sphenoid Sinus and its Clinical Significance Eldan Kapur 1* , Adnan Kapidžić 2, Amela Kulenović 1, Lana Sarajlić 2, Adis Šahinović 2, Maida Šahinović 3 1 Department of anatomy, Medical faculty, University of Sarajevo, Čekaluša 90, 71000 Sarajevo, Bosnia and Herzegovina 2 Clinic for otorhinolaryngology, Clinical centre University of Sarajevo, Bolnička 25, 71000 Sarajevo, Bosnia and Herzegovina 3 Department of histology and embriology, Medical faculty, University of Sarajevo, Čekaluša 90, 71000 Sarajevo, Bosnia and Herzegovina * Corresponding Author: Eldan Kapur, MD, PhD Department of anatomy, Medical faculty, University of Sarajevo, Bosnia and Herzegovina Email: [email protected] Phone: 033 66 55 49; 033 22 64 78 (ext. 136) Abstract Introduction: Sphenoid sinus is located in the body of sphenoid, closed with a thin plate of bone tissue that separates it from the important structures such as the optic nerve, optic chiasm, cavernous sinus, pituitary gland, and internal carotid artery. It is divided by one or more vertical septa that are often asymmetric. Because of its location and the relationships with important neurovascular and glandular structures, sphenoid sinus represents a great diagnostic and therapeutic challenge. Aim: The aim of this study was to assess the septation of the sphenoid sinus and relationship between the number and position of septa and internal carotid artery in the adult BH population. Participants and Methods: A retrospective study of the CT analysis of the paranasal sinuses in 200 patients (104 male, 96 female) were performed using Siemens Somatom Art with the following parameters: 130 mAs: 120 kV, Slice: 3 mm. -
Osteoma of Internal Auditory Canal - a Rare Pathology
Jemds.com Case Report Osteoma of Internal Auditory Canal - A Rare Pathology Bhushita Nilesh Guru1, Bhushan Narayan Lakhkar2 1Department of Radiology, Datta Meghe Institute of Medical Sciences, Sawangi (Meghe), Wardha, Maharashtra, India. 2Department of Radiology, Datta Meghe Institute of Medical Sciences, Sawangi (Meghe), Wardha, Maharashtra, India. PRESENTATION OF CASE A 27-year-old female patient visited the Department of Radiology with complaints of Corresponding Author: right sided facial palsy and sensory-neural hearing loss from past 10 years. Otologic Dr. Bhushita Nilesh Guru, examination revealed both tympanic membranes to be normal. Audiometry revealed Associate Professor, Datta Meghe Institute of right sided sensory neural hearing loss. The patient was also having multiple facial Medical Sciences, Sawangi (M), spasms. Wardha, Maharashtra, India. HRCT temporal bone of the patient was done, and it showed a well-defined round E-mail: [email protected] to oval bony out-pouching arising from posterior wall of right internal auditory canal causing severe stenosis of porus acusticus with only 7 mm patency. (Figure 1) The DOI: 10.14260/jemds/2020/625 lesion was noted to be over the vestibulo-cochlear and the facial nerves. The cortex of the lesion was continuous with that of the parent bone. (Figure 2). The left internal How to Cite This Article: auditory canal was normal. Guru BN, Lakhkar BN. Osteoma of internal auditory canal: a rare pathology. J Evolution Med Dent Sci 2020;9(38):2863- 2864, DOI: 10.14260/jemds/2020/625 DISCUSSION Submission 19-06-2020, Peer Review 13-08-2020, Osteomas are one of the common benign bone pathologies. -
Surgical Anatamic of Paranasal Sinuses
SURGICAL ANATAMIC OF PARANASAL SINUSES DR. SEEMA MONGA ASSOCIATE PROFESSOR DEPARTMENT OF ENT-HNS HIMSR MIDDLE TURBINATE 1. Anterior attachment : vertically oriented, sup to the lateral border of cribriform plate. 2. Second attachment :Obliquely oriented- basal lamella/ ground lamella, Attached to the lamina papyracea ( medial wall of orbit anterior, posterior air cells, sphenopala‐ tine foramen 3. Posterior attachment :medial wall of maxillary sinus, horizontally oriented. , supreme turbinate 3. Occasionally 4. fourth turbinate, 5. supreme meatus, if present 6. drains posterior ethmoid drains inferior, middle, superior turbinates and, occasionally, the supreme turbinate, the fourth turbinate. e. Lateral to these turbinates are the corresponding meatuses divided per their drainage systems ANATOMICAL VARIATIONS OF THE TURBINATES 1. Concha bullosa, 24–55%, often bilateral, 2. Interlamellar cell of grunwald: pneumatization is limited to the vertical part of middle turbinate, usually not causing narrowing of the ostiomeatal unit 3. Paradoxic middle turbinate: 26%,. Occasionally, it can affect the patency of the ostiomeatal unit 4. Pneumatized basal lamella, falsely considered, posterior ethmoid air cell Missed basal lamella – attaches to lateral maxillary sinus wall Ostiomeatal unit Anterior ostiomeatal unit, maxillary, anterior ethmoid, frontal sinuses, (1) ethmoid infundibulum, (2) middle meatus, (3) hiatus semilunaris, (4) maxillaryOstium, (5) ethmoid bulla, (6) frontal recess, (7) uncinate process. , sphenoethmoidal recess Other draining osteomeatal unit, posterior in the nasal cavity, posterior ethmoid sinus, lateral to the superior turbinate, . sphenoid Sinus medial to the superior turbinate Uncinate Process Crescent‐shaped, thin individual bone inferiorly- ethmoidal process of inferior turbinate, anterior, lacrimal bone, posteriorly- hiatus Semilunaris, medial -ethmoid infundibulum, laterally, middle meatus superior attachment- variability, direct effect on frontal sinus drainage pathway. -
Macroscopic Anatomy of the Nasal Cavity and Paranasal Sinuses of the Domestic Pig (Sus Scrofa Domestica) Daniel John Hillmann Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1971 Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica) Daniel John Hillmann Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Animal Structures Commons, and the Veterinary Anatomy Commons Recommended Citation Hillmann, Daniel John, "Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica)" (1971). Retrospective Theses and Dissertations. 4460. https://lib.dr.iastate.edu/rtd/4460 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. 72-5208 HILLMANN, Daniel John, 1938- MACROSCOPIC ANATOMY OF THE NASAL CAVITY AND PARANASAL SINUSES OF THE DOMESTIC PIG (SUS SCROFA DOMESTICA). Iowa State University, Ph.D., 1971 Anatomy I University Microfilms, A XEROX Company, Ann Arbor. Michigan I , THIS DISSERTATION HAS BEEN MICROFILMED EXACTLY AS RECEIVED Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica) by Daniel John Hillmann A Dissertation Submitted to the Graduate Faculty in Partial Fulfillment of The Requirements for the Degree of DOCTOR OF PHILOSOPHY Major Subject: Veterinary Anatomy Approved: Signature was redacted for privacy. h Charge of -^lajoï^ Wor Signature was redacted for privacy. For/the Major Department For the Graduate College Iowa State University Ames/ Iowa 19 71 PLEASE NOTE: Some Pages have indistinct print. -
Case Report Orbital Apex Syndrome Caused by Ethmoid Sinus Mucocele: a Case Report and Review of Literature
Int J Clin Exp Med 2017;10(1):1434-1438 www.ijcem.com /ISSN:1940-5901/IJCEM0041925 Case Report Orbital apex syndrome caused by ethmoid sinus mucocele: a case report and review of literature Li-Bo Dai1*, Chao Cheng2*, Jiang Bian2, He-Ming Han1, Li-Fang Shen1, Shui-Hong Zhou1, Yang-Yang Bao1, Jiang-Tao Zhong1, Er Yu1 1Department of Otolaryngology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, Zhejiang Province, China; 2Department of Otolaryngology, People’s Hospital of Jinhua City, Jinhua 321000, Zhejiang Province, China. *Equal contributors. Received October 15, 2016; Accepted November 16, 2016; Epub January 15, 2017; Published January 30, 2017 Abstract: Ethmoid sinus mucoceles are benign, expansile and cyst-like lesions, when sufficiently large, may causing compression of the optic nerve and nearby structures. We report an extremely rare case of ethmoid sinus mucocele causing orbital apex syndrome. A 59-year-old female presented with over one month history of left-side headache that worsened with left-side ophthalmodynia for six days, accompanied by left-side sudden ptosis and vision loss for half a day. Clinical findings were proved with that of a combined CN II, III, IV and VI paralysis. Computed tomographic scan demonstrated a dense homogeneous mass expanding the left ethmoid sinus and rarefaction of the lateral wall of the left ethmoid sinus with the contents compressing the optic nerve. She underwent a prompt endoscopic sinus surgery. Three days after the operation, the movement and vision of the left eye returned to normal, the left eye pain and headache had also resolved. -
Anatomic Variations of Sphenoid Sinus Pneumatization in a Sample of Turkish Population: MRI Study
Int. J. Morphol., 32(4):1140-1143, 2014. Anatomic Variations of Sphenoid Sinus Pneumatization in a Sample of Turkish Population: MRI Study Variaciones Anatómicas de la Neumatización del Seno Esfenoidal en una Muestra de Población Turca: Estudio por Resonancia Magnética Ozdemir Sevinc*; Merih Is**; Cagatay Barut*** & Aliriza Erdogan**** SEVINC, O.; IS, M.; BARUT, C. & ERDOGAN, A. Anatomic Variations of Sphenoid Sinus Pneumatization in a Sample of Turkish Population: MRI Study. Int. J. Morphol., 32(4):1140-1143, 2014. SUMMARY: There are a number of variations regarding morphometric anatomy and degree of pneumatization of the sphenoid sinus. In our study, we planned to examine and show the differences of pneumatization of the sphenoid sinus particularly to guide the neurosurgeon during transsphenoidal surgery. Sagittal T1-weighed spin-echo Magnetic Resonance Images (MRIs) of 616 adult individuals (406 women and 210 men) were analyzed, retrospectively. According to the collected data from our study, the most common type of the sphenoid sinus was the sellar type (83%; n=511) for the whole study group. Of the 616 individuals 16.6% (n=102) had presellar type and 0.5% (n=3) had conchal type of sphenoid sinus. Preoperative detailed detection of the anatomical characteristics of sphenoid sinus is essential. A thorough information obtained from studies of the regional anatomy and awareness of its variability can provide a safe and accurate transsphenoidal and extended endoscopic skull base approaches. KEY WORDS: Paranasal sinus; Pneumatization; Sphenoid sinus; Transsphenoidal approach. INTRODUCTION The sphenoid sinus is the most hidden and first years of life, it extends backward into the presellar area inaccessible of the paranasal sinuses which is approached and gradually expands into the area below and behind the by neurosurgeons via many surgical routes through basis sella turcica, and reaches its full size during adolescence cranii (Hewaidi & Omami, 2008). -
Prevalence of Ethmoid Sinus Abnormalities on Brain CT of Asymptomatic Adults
599 Prevalence of Ethmoid Sinus Abnormalities on Brain CT of Asymptomatic Adults Bertrand Duvoisin 1 To evaluate the prevalence of ethmoid sinus abnormalities in adults without clinical Arido Agrifoglio2 history of sinusitis or allergic rhinitis, the brain CT scans of 156 patients were analyzed prospectively. In 17 cases (10.9%) the ethmoid labyrinth showed abnormalities. In most of these cases (88%) the ethmoid disease was localized to four or fewer cells. Men were more often affected than women (ratio, 2.5:1), and the prevalence of abnormalities was fairly similar across age groups. Isolated ethmoid sinus infections usually go unrecognized if uncomplicated, and the diagnosis is made retrospectively [1]. However, most bacterial infections of the paranasal sinuses begin with ethmoiditis [1, 2] . During recent years the crucial role of ethmoid sinus disease in the genesis of recurrent frontal and maxillary sinusitis has been emphasized [3, 4]. Standard sinus radiographs incompletely delineate ethmoiditis because of the superimposition of various ethmoid cells, whatever the radiographic position [5, 6] . Axial CT sections allow excellent analysis of the ethmoid labyrinth [7, 8] . The aim of this prospective study was to determine the prevalence of ethmoid sinus abnormalities on brain CT scans of adults whose clinical history was free of symptoms of sinusitis or allergic rhinitis. Subjects and Methods During a 10-week period from May to July 1988, 729 consecutive brain CT scans were obtained for indications other than CT evaluation of paranasal sinus abnormalities. The CT scans were evaluated prospectively for ethmoid sinus alterations and correlated with clinical history. Patients were excluded from the study population for any of the following reasons: under 18 years old, unconscious or confused, antecedents of surgery or radiation therapy involving the facial region , clinical hi story of si nusitis, or allergic rhinitis (the study was conducted between spring and summer). -
Name: Jekey-Green, Tamuno-Imim Sokari 300L, MBBS Matric No: 17
Name: Jekey-Green, Tamuno-imim Sokari 300l, MBBS Matric No: 17/MHS01/169 Head and neck assignment 28th April, 2020 1. Write an essay on Cavernous sinus The cavernous sinuses are located within the middle cranial fossa, on either side of the Sella turcica of the sphenoid bone (which contains the pituitary gland)) they are enclosed by the endosteal and meningeal layers of the Dura mater. Diagram showing Cavernous sinus and some borders The borders of the cavernous sinus are as follows: Anterior: super orbital fissure Posterior: Petrous part of the temporal bone Medial: body of the sphenoid bone Lateral: Meningeal layer of the Dura mater running from the roof to the floor of the middle cranial fossa Roof: meningeal layer of the Dura mater that attaches to the anterior and middle clinoid processes of the sphenoid bone Floor: endosteal layer of Dura mater that overlies the base of the greater wing of the sphenoid bone The right and left wall of the cavernous sinus are joined anteriorly and posteriorly by the intercarvenous sinus. Diagram showing Cavernous sinus, artery and veins Venous drainage The cavernous sinuses receive blood from the 1. Cerebral veins which includes: Superficial middle cerebral veins, inferior cerebral vein 2. the superior and inferior ophthalmic veins (from the orbit) 3. Emissary veins (from the pterygoid plexus of veins in the infratemporal fossa Each sinus extends anteriorly from the superior orbital fissure to the apex of the temporal bone posteriorly It is of great clinical importance because of the connection and structures that pass through them Structures passing through the medial Structures that travels through lateral wall of the cavernous sinus wall of the Cavernous Sinus • Abducens nerve(CNVI) From superior to inferior • Carotid Plexus • Occulomotor nerve(CNIII) • Internal Carotid artery(Cavernous • Trochlear nerve(CNIV) portion) • Opthalamic nerve(VI) • Maxillary nerve(VII) Clinical Significance 1. -
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Things to from BD CH#15 Page 26 CH 15, Page 255 Formation of Lateral wall of nose--- Lymphatic drainage of nasal cavityC-H--#- 15 page 255-256 Arterial supply, venous drainage, lymphatic drainage and ImpnoervteasnuptpSlyEofQpasranasal sinuses 1st priority Give the arterial supply of medal and lateral walls of nasal cavity. What are the components of bony part of nasal septum? Discuss the anatomical basis of epistaxis with reference to arterial supply of nasal septum. What are the boundaries of nasal cavities? What is the venous drainage, innervation and lymphatic nd 2 pdrraiionraigteyo;f nasal cavity? What is rhinitis? Enlist five different routes of spread of infection from nasal cavity. www.themedicalglobe.com / www.mgElearning.net Page 1 of 9 What is little’s area and what is its clinical importance? What is the skeleton of external nose? What are nasal meatus? Enumerate openings in various meatus. What are paranasal sinuses? briefly describe frontal sinus, ethmoidal and sphenoidal sinuses. What are boundaries of Maxillary sinus. Give its arterial supply, NOTEv;eDnoufsirasntdplryimorpihtyatSicEQdrSafiinrasgteaannddtihnennersveactoionnd priority SEQs. Do not skip any Imp clinicals Nasal fractures Rhinitis Impeopirstaaxnist points for MCQs and VIVA; Skeleton of the nose is composed of bone and hyaline cartilage. The bony part of the nose (consists of the nasal bones, frontal processes of the maxillae, the nasal part of the frontal bone and its nasal spine, and the bony parts of the nasal septum. The main components of the nasal septum are the perpendicular plate of the ethmoid, the vomer, and the septal cartilage roof of the nasal cavities is formed by frontonasal, ethmoidal, and sphenoidal bones www.themedicalglobe.com / www.mgElearning.net Page 2 of 9 The floor of the nasal cavities is formed by the palatine processes of the maxilla and the horizontal plates of the palatine bone. -
Approach to Frontal Sinus Outflow Tract Injury
Arch Craniofac Surg Vol.18 No.1, 1-4 Archives of Cr aniofacial Surgery https://doi.org/10.7181/acfs.2017.18.1.1 Review Article Approach to Frontal Sinus Outflow Tract Injury Yong Hyun Kim, Frontal sinus outflow tract (FSOT) injury may occur in cases of frontal sinus fractures and Baek-Kyu Kim nasoethmoid orbital fractures. Since the FSOT is lined with mucosa that is responsible for the path from the frontal sinus to the nasal cavity, an untreated injury may lead to complica- Department of Plastic and Reconstructive tions such as mucocele formation or chronic frontal sinusitis. Therefore, evaluation of FSOT Surgery, Seoul National University Bundang is of clinical significance, with FSOT being diagnosed mostly by computed tomography or Hospital, Seoul National University College of Medicine, Seongnam, Korea intraoperative dye. Several options are available to surgeons when treating FSOT injury, and they need to be familiar with these options to take the proper treatment measures in order to follow the treatment principle for FSOT, which is a safe sinus, and to reduce com- plications. This paper aimed to examine the surrounding anatomy, diagnosis, and treatment of FSOT. No potential conflict of interest relevant to this article was reported. Keywords: Frontal sinus / Frontonasal / Recess / Duct INTRODUCTION the anatomy of the frontal sinus, and it is important to maintain sinus function, restore facial aesthetics, and prevent complications Frontal sinus fracture and nasoethmoid orbital fracutre accounts [4]. Being FSOT injury present is of special clinical significance, for approximately 10% of all craniofacial fractures and it occurs because complications associated with FSOT injury can include from high velocity impact with the main cause of injury being mucocele formation or chronic frontal sinusitis (infection) [1,3].