MyMedR

Fulltext Supreme Nasal Turbinate as an Additional Surgical Landmark in Endoscopic Sinus and Skull Base Surgeries

Abdullah SN, Abdullah B

Cureus, 2020 May 15;12(5):e8132.

During endoscopic sinus and skull base surgeries, surgical landmarks are routinely used to guide surgeons navigating in the narrow corridor of the sinonasal region. Risk of complications is higher in difficult cases when there is excessive bleeding or alteration of the normal anatomical landmarks by tumour. An additional landmark is advantageous to prevent complications and serves as a guide. We present a case of supreme turbinate found incidentally during an endoscopic transsphenoidal surgery. Not much is known about the role of supreme turbinate. When it is present, the sphenoid ostium is located medial to its posteroinferior attachment, and behind its vertical part. Hence, the identification of this structure serves as an additional landmark besides superior turbinate during surgery.

Matched MeSH terms: Skull Base

Basal skull fractures. A prospective study of 100 consecutive admissions

Chee CP, Ali A

Aust N Z J Surg, 1991 Aug;61(8):597-602.

PMID: 1867613

A prospective study of 100 consecutive patients with basal skull fracture admitted to the University Hospital, Kuala Lumpur between July 1986 and October 1988 was carried out to study its epidemiological pattern, clinical and radiological presentations, mechanisms of injury, time interval between accidents and neurosurgical referrals, complications and outcomes. Two-thirds of the patients were between 20 and 50 years old and 79% were male. Half of the injured were motorcyclists and 22% were pedestrians. Three-quarters of the patients were seen within an hour after injury. Thirty-two patients had intracranial haematomas: 14 subdural, 9 extradural and 9 intracerebral. Three patients developed meningitis (two after operations) and six developed epilepsy. Eighteen patients died, but good recovery resulted in 70 patients at follow-up of 1 to 28 months. A small subgroup of 15 patients with severe ear and nose bleeding as a result of basal venous sinus tear died within a few hours despite aggressive resuscitation, probably due to underlying severe brain stem injury. The implication of the high incidence of basal skull fractures in motorcyclists, despite the enforcement of crash helmets is discussed, with possible mechanisms proposed.

Matched MeSH terms: Skull Fractures/complications; Skull Fractures/epidemiology*; Skull Fractures/surgery

Fulltext Using 21st-Century Technologies to Determine the Cognitive Capabilities of a 11,000-Year-Old Perak Man Who Had Brachymesophalangia Type A2

Abdullah JY, Saidin M, Rajion ZA, Hadi H, Mohamad N, Moraes C, et al.

Malays J Med Sci, 2021 Feb;28(1):1-8.

PMID: 33679214 DOI: 10.21315/mjms2021.28.1.1

Perak Man, named after the state where the skeleton was found, was the most complete skeleton found in Southeast Asia. The funerary artefacts indicate that Perak Man was highly respected, as he was buried at the centre of the highest cave in Lenggong, and he was the only person buried there. A copy of the original skull was made using computed tomography (CT) and 3D printing. Based on the internal structure of the reconstructed skull, the estimated intracranial volume (ICV) is 1,204.91 mL. The hypothetical face of Perak Man was reconstructed according to established forensic methods. Based on his presumed status, Perak Man was likely a respected person in the group and, perhaps, a shaman and the most knowledgeable person in the group regarding survival, hunting, gathering and other aspects of Palaeolithic daily life.

Matched MeSH terms: Skull

Midface hypoplasia in syndromic craniosynostosis: predicting craniofacial growth via a novel regression model from anatomical morphometric analysis

Hariri F, Malek RA, Abdullah NA, Hassan SF

Int J Oral Maxillofac Surg, 2024 Apr;53(4):293-300.

PMID: 37739816 DOI: 10.1016/j.ijom.2023.08.009

Midface hypoplasia in syndromic craniosynostosis (SC) may lead to serious respiratory issues. The aim of this study was to analyse the morphometric correlation between midface and cranial base parameters in paediatric SC patients in order to formulate predictive regression models. The computed tomography scans of 18 SC patients and 20 control were imported into Materialise Mimics Medical version 21.0 software for the measurement of multiple craniofacial landmarks and correlation analysis. The results showed a strong correlation of anterior cranial base (SN), posterior cranial base (SBa), and total cranial base (NBa) (r = 0.935) to maxilla length and width (ZMR-ZML) (r = 0.864). The model of NBa = - 1.554 + 1.021(SN) + 0.753(SBa) with R2 = 0.875 is proposed to demonstrate the development of the cranial base that causes a certain degree of midface hypoplasia in SC patients. The formula is supported using a prediction model of ZMR-ZML = 5.762 + 0.920(NBa), with R2 = 0.746. The mean absolute difference and standard deviation between the predicted and true NBa and ZMR-ZML were 2.08 ± 1.50 mm and 3.11 ± 2.32 mm, respectively. The skeletal growth estimation models provide valuable foundation for further analysis and potential clinical application.

Matched MeSH terms: Skull Base

Test of Sex Estimation Equations on Carpal Bones in a Northeastern Thai Population

Laowatthanaphong S, Das S, Phatsara M, Tuamsuk P, Mahakkanukrauh P

Clin Ter, 2016 Mar-Apr;167(2):29-32.

PMID: 27212569 DOI: 10.7417/CT.2016.1917

Sex assessment is an essential step in person identification, both in forensic and anthropological contexts. Many parts of skeletal remains such as skull, pelvis and long bones have been proven to be useful in determining sex. However, literature has shown that short bones such as carpal bones are also sexually dimorphic. In the last few years, there was an unpublished study using lunate, scaphoid and hamate from bone collection in Northern Thailand to create 6 discriminant equations to assess sex. The objective of this study was to investigate the application of those equations in the sample from other parts of Thailand.

Matched MeSH terms: Skull

Metastatic osteosarcoma of the ethmoid: an unusual cause of recurrent epistaxis and proptosis

Sharma HS, Reddy SC, Mohamad A, Kamal MZ, Halder D

J Laryngol Otol, 1996 Jul;110(7):676-8.

PMID: 8759546

Osteosarcoma is the most common primary malignant tumour of bone and it usually metastasises to the lung. In the nasal cavity metastatic disease is extremely rare. We describe a case of osteosarcoma presenting with recurrent epistaxis, and proptosis due to secondaries in the nasal cavity. To our knowledge such a case has not been reported previously in the available English literature.

Matched MeSH terms: Skull Neoplasms/complications; Skull Neoplasms/secondary*

Geographical variation of skull morphology and its functional significances in the red-cheeked squirrel

Endo H, Kimura J, Oshida T, Stafford BJ, Rerkamnuaychoke W, Nishida T, et al.

J Vet Med Sci, 2003 Nov;65(11):1179-83.

PMID: 14665745

Skulls of the red-cheeked squirrel (Dremomys rufigenis) from various geographical locations: Malaysia (peninsular area), Vietnam (south district)-Laos, and Thailand (north district) were osteometrically examined. The skull size of the squirrels in the southern (Malaysia) population was fundamentally larger than that in the northern (Vietnam, Laos and Thailand) populations. The proportion indices indicated that the splanchnocranium was relatively longer in the Malaysia population, and that the interorbital space was narrower in Vietnam-Laos, and Thailand populations. We suggest that the long nose and laterally-oriented orbits in the skull may be better adapted for terrestrial-insectivorous life in the Malaysia population and the binocular sense facilitated by rostrally-oriented eyes contributes to the arboreal-fruit eating behavior in the two northern populations. The Malaysia population was clearly distinguished from the other populations by the principal component analysis. We suggest that the geographical barrier of the Isthmus of Kra influences the morphological variation of the skull among the squirrel populations.

Matched MeSH terms: Skull/anatomy & histology*; Skull/physiology

Surgical management of tympanojugular paragangliomas with intradural extension, with a proposed revision of the Fisch classification

Sivalingam S, Konishi M, Shin SH, Lope Ahmed RA, Piazza P, Sanna M

Audiol Neurootol, 2012;17(4):243-55.

PMID: 22584244 DOI: 10.1159/000338418

Tympanojugular paragangliomas (TJPs) with intradural extension can be successfully treated by a single or staged procedure with low surgical morbidity.

Matched MeSH terms: Skull Base Neoplasms/classification; Skull Base Neoplasms/surgery*

Metachronous inflammatory myofibroblastic tumour in the temporal bone: case report

Goh BS, Tan SP, Husain S, Rose IM, Saim L

J Laryngol Otol, 2009 Oct;123(10):1184-7.

PMID: 19192318 DOI: 10.1017/S0022215109004642

We report an extremely rare case of metachronous inflammatory myofibroblastic tumour in the temporal bone.

Matched MeSH terms: Skull Neoplasms/pathology; Skull Neoplasms/surgery*

Cranial base and airway morphology in adult malays with obstructive sleep apnoea

Banabilh SM, Suzina AH, Dinsuhaimi S, Singh GD

Aust Orthod J, 2007 Nov;23(2):89-95.

PMID: 18200785

Obstructive sleep apnoea (OSA) has been described as a public health problem comparable to smoking in its impacts upon society.

Matched MeSH terms: Skull Base/pathology*; Skull Base/radiography

Endoscopic skull base training using 3D printed models with pre-existing pathology

Narayanan V, Narayanan P, Rajagopalan R, Karuppiah R, Rahman ZA, Wormald PJ, et al.

Eur Arch Otorhinolaryngol, 2015 Mar;272(3):753-7.

PMID: 25294050 DOI: 10.1007/s00405-014-3300-3

Endoscopic base of skull surgery has been growing in acceptance in the recent past due to improvements in visualisation and micro instrumentation as well as the surgical maturing of early endoscopic skull base practitioners. Unfortunately, these demanding procedures have a steep learning curve. A physical simulation that is able to reproduce the complex anatomy of the anterior skull base provides very useful means of learning the necessary skills in a safe and effective environment. This paper aims to assess the ease of learning endoscopic skull base exposure and drilling techniques using an anatomically accurate physical model with a pre-existing pathology (i.e., basilar invagination) created from actual patient data. Five models of a patient with platy-basia and basilar invagination were created from the original MRI and CT imaging data of a patient. The models were used as part of a training workshop for ENT surgeons with varying degrees of experience in endoscopic base of skull surgery, from trainees to experienced consultants. The surgeons were given a list of key steps to achieve in exposing and drilling the skull base using the simulation model. They were then asked to list the level of difficulty of learning these steps using the model. The participants found the models suitable for learning registration, navigation and skull base drilling techniques. All participants also found the deep structures to be accurately represented spatially as confirmed by the navigation system. These models allow structured simulation to be conducted in a workshop environment where surgeons and trainees can practice to perform complex procedures in a controlled fashion under the supervision of experts.

Matched MeSH terms: Skull Base/anatomy & histology*; Skull Base/surgery*

Sound production in the tiger-tail seahorse Hippocampus comes: Insights into the sound producing mechanisms

Lim AC, Chong VC, Chew WX, Muniandy SV, Wong CS, Ong ZC

J Acoust Soc Am, 2015 Jul;138(1):404-12.

PMID: 26233039 DOI: 10.1121/1.4923153

Acoustic signals of the tiger-tail seahorse (Hippocampus comes) during feeding were studied using wavelet transform analysis. The seahorse "click" appears to be a compounded sound, comprising three acoustic components that likely come from two sound producing mechanisms. The click sound begins with a low-frequency precursor signal, followed by a sudden high-frequency spike that decays quickly, and a final, low-frequency sinusoidal component. The first two components can, respectively, be traced to the sliding movement and forceful knock between the supraorbital bone and coronet bone of the cranium, while the third one (purr) although appearing to be initiated here is produced elsewhere. The seahorse also produces a growling sound when under duress. Growling is accompanied by the highest recorded vibration at the cheek indicating another sound producing mechanism here. The purr has the same low frequency as the growl; both are likely produced by the same structural mechanism. However, growl and purr are triggered and produced under different conditions, suggesting that such "vocalization" may have significance in communication between seahorses.

Matched MeSH terms: Skull/physiology; Skull/radiography

Metastatic Pleomorphic Adenoma in the infratemporal fossa and neck following total parotidectomy after 30 years

Wong DKC, Muhamad NS, Sobri SS, Amin WAM, Yusof Z

Med J Malaysia, 2019 04;74(2):85-86.

PMID: 31079134

Metastasising pleomorphic adenoma is rare and may occur years after surgical excision of a pleomorphic adenoma (PA). We present a 61-year-old woman with a right infratemporal PA with metastases to the cervical lymph nodes after 30 years following a total parotidectomy. She was treated successfully with a resection of the tumour with combined neck and mandibulotomy approach along with postoperative radiotherapy given subsequently.

Matched MeSH terms: Skull Base Neoplasms/diagnosis*; Skull Base Neoplasms/etiology; Skull Base Neoplasms/pathology; Skull Base Neoplasms/therapy

Association of traumatic head injuries and maxillofacial fractures: A retrospective study

Abosadegh MM, Rahman SA, Saddki N

Dent Traumatol, 2017 Oct;33(5):369-374.

PMID: 28504848 DOI: 10.1111/edt.12349

BACKGROUND/AIMS: The association of traumatic head injury (THI) with maxillofacial fractures (MFF) is a major health concern worldwide. In spite of the close anatomical proximity of maxillofacial bones to the cranium, the association of THI with MFF is controversial. The aim of this study was to assess the association between THI and MFF. Other factors associated with THI in patients with MFF were also investigated.

MATERIALS AND METHODS: A hospital-based retrospective study was conducted at the OMFS Unit, Hospital USM, Kelantan, Malaysia. From 12 June 2013 to 31 December 2015, 473 patient records with MFF were reviewed to evaluate the association of THI and MFF.

RESULTS: A total of 331 patients (69.98%) presented with concomitant THI. The most common associated THI were cranial bone fractures (68.6%) followed by intracranial injuries and concussion. A significant association existed between the Glasgow coma scale (GCS) score and the presence of THI concomitant MFF with P-value

Matched MeSH terms: Skull Fractures/etiology; Skull Fractures/epidemiology*

Oncologic outcome in surgical management of jugular paraganglioma and factors influencing outcomes

Lope Ahmad RA, Sivalingam S, Konishi M, De Donato G, Sanna M

Head Neck, 2013 Apr;35(4):527-34.

PMID: 22544660 DOI: 10.1002/hed.22987

The purpose of this study was to identify the factors that may influence the management outcome in patients with jugular paragangliomas.

Matched MeSH terms: Skull Base Neoplasms/pathology; Skull Base Neoplasms/surgery*

Endoscopic fenestration at the splenial-habenular junctional area for symptomatic cavum and tumor at the foramen of Monro: case reports and anatomical review

Idris Z, Johnson JR, Abdullah JM

J. Neurosurg., 2015 Mar;122(3):504-10.

PMID: 25343181 DOI: 10.3171/2014.9.JNS132683

The splenial-habenular junctional area is an alternative site for neuroendoscopic fenestration to divert CSF flow into the quadrigeminal cistern in cases in which endoscopic third ventriculostomy is not amenable. In some patients with obstructive hydrocephalus, the splenium of the corpus callosum can be elevated from the habenular complex. This exposes the membranous connection between the splenium and habenula, which can be fenestrated to divert the CSF flow into the quadrigeminal cistern. This technique can be performed in patients in whom the foramen of Monro or the third ventricle is blocked by a lesion. Here, the authors present 3 complex cases that were managed by neuronavigation-guided transventricular transcavum endoscopic fenestration of the splenial-habenular junctional area. These cases may increase the knowledge and understanding of the anatomy of this region.

Matched MeSH terms: Skull/anatomy & histology; Skull/surgery*

Fulltext Posterior reversible encephalopathy in undiagnosed systemic lupus erythematous: a case report

Sulaiman W, Husin NM, Baba MS

Oman Med J, 2011 Nov;26(6):e026.

PMID: 28861180 DOI: 10.5001/omj.2011.119

A 33-year old Malay woman with undiagnosed systemic lupus erythematosus (SLE) and other comorbids presented with acute glomerularnephritis, hypertensive emergency and later acute confusional state. Cranial MRI revealed features consistent with posterior reversible encephalopathy syndrome (PRES).

Matched MeSH terms: Skull

Fulltext A new method for sex estimation from maxillary suture length in a Thai population

Sinthubua A, Ruengdit S, Das S, Mahakkanukrauh P

Anat Cell Biol, 2017 Dec;50(4):261-264.

PMID: 29354297 DOI: 10.5115/acb.2017.50.4.261

Sex estimation is one of the crucial procedures in the biological profile identification of human skeletal remains. Knowing sex of unknown case can lead to accurate and appropriate methods for predicting age, stature, ancestry, or even personal identification. Skull is one of the most reliable one among other skeletons and it is usually retained for both archaeological and forensic contexts. Although many morphological features and metric measurements of skull have been studied for sexing, but to the best of our knowledge is no study on maxillary suture length for sex estimation. Therefore, this study aims to develop a new sex estimation method for a Thai population by determining three maxillary suture lengths: anterior, transverse, and posterior maxillary suture, by computerizing amount of pixel obtained from photographs of these sutures. The present study was conducted on 190 Thai bone samples of which 96 were males and 94 were females. Independent t test revealed statistically significant difference (P<0.01) between males and females in all maxillary suture measurements. Equations derived from prediction model, which required three maxillary suture lengths gave 76.8421% accuracy from the leave-one-out cross validation in estimating sex percentage accuracies in predicting sex from these equations, which were relatively moderate. This study provides a novel and objective sex estimation method for Thais. It suggests that maxillary suture length can be applied for sex estimation. The new computerized technique will contribute basis knowledge and method for sex estimation, especially when only base of skull is available in forensic circumstance.

Matched MeSH terms: Skull Base

Fulltext Description of cranial elements and ontogenetic change within Tropidolaemus wagleri (Serpentes: Crotalinae)

Hill N

PLoS One, 2019;14(2):e0206023.

PMID: 30785876 DOI: 10.1371/journal.pone.0206023

Tropidolaemus wagleri is a species of Asian pitviper with a geographic range including Thailand, Vietnam, Malaysia, Singapore, Bruniei, parts of Indonesia, and the Philippines. Tropidolaemus is a member of the Crotalinae subfamily, within Viperidae. The genus Tropidolaemus includes five species, and was once included within the genus Trimeresurus. While some osteologic characteristics have been noted a comprehensive description of cranial elements has not been produced for T. wagleri. An in-depth description of the cranial skeleton of Tropidolaemus wagleri lays the foundation for future projects to compare and contrast other taxa within Crotalinae and Viperidae. The chosen reference specimen was compared to the presumed younger specimens to note any variation in ontogeny. The study here provides a comprehensive description of isolated cranial elements as well as a description of ontogenetic change within the specimens observed. This study contributes to the knowledge of osteological characters in T. wagleri and provides a foundation for a long term project to identify isolated elements in the fossil record.

Matched MeSH terms: Skull

Effects of nasal lavage with and without mupirocin after endoscopic endonasal skull base surgery: a randomised, controlled study

Ng BHK, Tang IP, Narayanan P, Raman R, Carrau RL

J Laryngol Otol, 2019 Dec;133(12):1059-1063.

PMID: 31774052 DOI: 10.1017/S0022215119002329

BACKGROUND: Nasal lavage with mupirocin has the potential to reduce sinonasal morbidity in endoscopic endonasal approaches for skull base surgery.

OBJECTIVE: To evaluate the effects of nasal lavage with and without mupirocin after endoscopic endonasal skull base surgery.

METHODS: A pilot randomised, controlled trial was conducted on 20 adult patients who had undergone endoscopic endonasal approaches for skull base lesions. These patients were randomly assigned to cohorts using nasal lavages with mupirocin or without mupirocin. Patients were assessed in the out-patient clinic, one week and one month after surgery, using the 22-item Sino-Nasal Outcome Test questionnaire and nasal endoscopy.

RESULTS: Patients in the mupirocin nasal lavage group had lower nasal endoscopy scores post-operatively, and a statistically significant larger difference in nasal endoscopy scores at one month compared to one week. The mupirocin nasal lavage group also showed better Sino-Nasal Outcome Test scores at one month compared to the group without mupirocin.

CONCLUSION: Nasal lavage with mupirocin seems to yield better outcomes regarding patients' symptoms and endoscopic findings.

Matched MeSH terms: Skull Base/surgery; Skull Base Neoplasms/surgery*

Displaying publications 61 - 80 of 174 in total