MyMedR

Radiological analysis of the ethmoid roof in the Malaysian population

Alazzawi S, Omar R, Rahmat K, Alli K

Auris Nasus Larynx, 2012 Aug;39(4):393-6.

PMID: 22055509 DOI: 10.1016/j.anl.2011.10.002

To ascertain the prevalence of the lateral lamella of the cribriform plate height according to Keros classification in the Malaysian population, and to find if there is any difference between the major ethnic groups in Malaysia (Malay, Chinese, Indian).

Matched MeSH terms: Ethmoid Bone/anatomy & histology*; Ethmoid Bone/radiography*

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: Ethmoid Bone*

Anatomical variations of anterior ethmoidal artery at the ethmoidal roof and anterior skull base in Asians

Abdullah B, Lim EH, Mohamad H, Husain S, Aziz ME, Snidvongs K, et al.

Surg Radiol Anat, 2019 May;41(5):543-550.

PMID: 30542929 DOI: 10.1007/s00276-018-2157-3

PURPOSE: The variations of the anterior ethmoidal artery (AEA) in different populations should be recognized by surgeons to prevent unwarranted complications during surgery. The aim of this study was to assess the anatomical variations of AEA in Asian population.

METHODS: A cross-sectional study of 252 AEA identified by computed tomography (CT) of the paranasal sinuses. The multiplanar CT images were acquired from SOMATOM® Definition AS+ and reconstructed to axial, coronal and sagittal view at 1 mm slice thickness.

RESULTS: 42.5% of AEA was within skull base (grade I), 20.2% at skull base (grade II) and 37.3% coursed freely below skull base (grade III). The prevalence of supraorbital ethmoid cell (SOEC) and suprabullar cell (SBC) was 29.8% and 48.0%. The position of AEA at skull base has significant association with SOEC (p ethmoid sinus (p = 0.016). The mean distance of AEA from skull base was 1.93 ± 2.03 mm, orbital floor 21.91 ± 2.47 mm and nasal floor 49.01 ± 3.53 mm.

CONCLUSIONS: The position of AEA at skull base depends on the presence of SOEC and length of lateral lamella, but not with SBC. When compared to European population, the mean distance between AEA and nasal floor is shorter in Asians.

Matched MeSH terms: Ethmoid Bone/blood supply*

Frontoethmoidal encephalocele: treatment and outcome

Arshad AR, Selvapragasam T

J Craniofac Surg, 2008 Jan;19(1):175-83.

PMID: 18216685 DOI: 10.1097/scs.0b013e3181534a77

This is a study on 124 patients who were treated by the authors over a 19-year period. There were 48 male and 76 female patients. The age range of these patients at the time of treatment was between 4 months and 32 years. There was no family history of similar deformity. All of these patients come from a socially low-income group. Fourteen patients had accompanying congenital amputation of fingers, toes, or limbs. Two had oral cleft lip and palate. The surgical treatment was medial orbital wall osteotomy and excision of encephalocele. There were two mortalities and five patients who had complications that needed secondary surgical intervention. Thirty-eight patients are still under follow up without any complaints.

Matched MeSH terms: Ethmoid Bone/surgery*

Fulltext Endoscopic transnasal approach to anterior and middle cranial base lesions

Tan SH, Brand Y, Prepageran N, Waran V

Neurol India, 2015 Sep-Oct;63(5):673-80.

PMID: 26448224 DOI: 10.4103/0028-3886.166539

We present our experience in managing pathologies involving the anterior and middle cranial base using an endoscopic transnasal approach, highlighting the surgical technique, indications, and complications. The different types of endoscopic approaches used include the transtuberculum/transplanum, transcribiform, transsellar, and cavernous sinus approaches. The common indications include repair of cerebrospinal fluid leaks (both spontaneous and post traumatic) and excision of pituitary adenomas, meningiomas, craniopharyngiomas, esthesioneuroblastomas, and other malignancies of the anterior cranial base. Careful reconstruction is performed with the multilayer technique utilizing fat, fascia lata, and fibrin sealant. The endoscopic transnasal approach, coupled with the present-day sophisticated neuronavigation systems, allows access to lesions in the midline extending from the cribriform plate to the craniovertebral junction. However, preoperative planning and careful selection of cases with evaluation of each case on an individual basis with regard to the lateral extension of the lesion are imperative.

Matched MeSH terms: Ethmoid Bone

Fulltext Traumatic transnasal penetrating injury with cerebral spinal fluid leak

Teng TS, Ishak NL, Subha ST, Bakar SA

EXCLI J, 2019;18:223-228.

PMID: 31217785 DOI: 10.17179/excli2018-1971

CSF leak in penetrating skull base injury is relatively rare compared to close head injury involving skull base fracture. We report a 5-year-old boy presented with epistaxis and impacted pencil into the left nostril. The child was hemodynamically stable without any neurological deficit. Intraoperatively, there was a nasal septal defect posteriorly with anterior skull base fracture associated with CSF leak. The pencil was removed from the left nostril and the CSF leak was repaired using harvested abdominal fat under the same setting. Computed Tomography (CT) of the brain showed right cribriform plate fracture with small pneumocranium. Postoperatively, a prophylactic antibiotic was given for seven days and he was discharged well. Subsequent clinic visits up to one-year postoperative period showed no recurrence of the CSF leak. History taking, physical examination and CT imaging give valuable diagnostic values in managing the penetrating skull base injury. Early intervention for removal of the foreign body and repair of the CSF leak is advocated to prevent catastrophic complication.

Matched MeSH terms: Ethmoid Bone

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