The megadolichobasilar artery anomaly and expansion of the internal auditory meatus

1976 ◽  
Vol 11 (3) ◽  
pp. 109-111 ◽  
Author(s):  
B. Azar-Kia ◽  
E. Palacios ◽  
M. Spak
Keyword(s):  
Internal Auditory Meatus ◽  
Megadolichobasilar Artery

Ultrasonic bone curettage for optic canal unroofing and anterior clinoidectomy

2006 ◽  
Vol 104 (4) ◽  
pp. 621-624 ◽  
Author(s):  
Han Soo Chang ◽  
Masahiro Joko ◽  
Joon Suk Song ◽  
Kiyoshi Ito ◽  
Tatsushi Inoue ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Visual Outcome ◽  
Optic Canal ◽  
Internal Auditory Meatus ◽  
Major Morbidity ◽  
Anterior Clinoidectomy ◽  
Optic Nerve Damage ◽  
Bone Removal ◽  
Visual Status ◽  
Optic Canal Unroofing

✓Extradural unroofing of the optic canal and subsequent mobilization of the optic nerve is a useful technique in the surgical treatment of parasellar tumors; however, the drilling procedure itself is associated with the risk of optic nerve damage. A safer technique would certainly be beneficial. The ultrasonic bone curette is a device developed in Japan for safer bone removal. Its use in intradural anterior clinoidectomy and opening of the internal auditory meatus has been reported before. In this article the authors describe their experience in using this device for extradural unroofing of the optic canal in patients with parasellar tumors. Between March 2002 and November 2004, the aforementioned technique was used in the treatment of eight patients with parasellar tumors. After undertaking a frontotemporal craniotomy and orbital osteotomy, an ultrasonic bone curette was used to unroof the optic canal via an epidural approach; in five cases anterior clinoidectomy was added subsequently. Using an ultrasonic bone curette, unroofing of the optic canal was completed safely and required much less expertise than that required for standard drilling. The mortality and major morbidity rates were 0%. The visual function outcome was satisfactory, with the overall visual status improving in all seven patients in whom this symptom was present preoperatively. The ultrasonic bone curette makes the unroofing of the optic canal safer and easier, possibly improving the visual outcome of patients undergoing surgery for parasellar tumors.

Vanishing tumour of the internal auditory meatus

2008 ◽  
Vol 123 (5) ◽  
pp. 563-565 ◽  
Author(s):  
A Jain ◽  
M Ablett ◽  
P Wardrop
Keyword(s):  
World Literature ◽  
Cerebellopontine Angle ◽  
Renal Carcinoma ◽  
Treatment Options ◽  
Internal Auditory Meatus ◽  
Radiological Investigation ◽  
Urological Symptoms ◽  
History Of ◽  
The Common ◽  
Rare Report

AbstractObjectives:We report a very rare case of prostatic metastasis in the internal auditory meatus, which disappeared with treatment.Case report:An elderly man presented with a history of hearing loss, dizzy spells and, more recently, facial palsy. He also complained simultaneously of urological symptoms, which on investigation revealed advanced, metastatic prostate cancer. Radiological investigation, in the form of magnetic resonance imaging, revealed an internal auditory meatus mass which resembled an acoustic neuroma. The patient was treated with hormone injections.Tumours of the internal auditory meatus and cerebellopontine angle are mostly primary. Rarely, metastatic deposits have been described in this region, from squamous cell carcinoma, malignant melanoma, malignant parotid oncocytoma, renal carcinoma, and lung and thyroid primaries.Conclusion:To our knowledge, this is a very rare report in the world literature of prostatic metastasis to the internal auditory meatus. We discuss the common presenting features, investigations and treatment options for metastatic prostatic tumours of the internal auditory meatus and cerebellopontine angle.

ACOUSTIC TUMORS WITHIN THE INTERNAL AUDITORY MEATUS

1936 ◽  
Vol 46 (8) ◽  
pp. 616???627 ◽  
Author(s):  
EDMUND PRINCE FOWLER
Keyword(s):  
Internal Auditory Meatus

scholarly journals Dilative Arteriopathy and Leucencephalopathy as Manifestations of a Neurometabolic Disease

2015 ◽  
Vol 9 (1) ◽  
pp. 28-31 ◽  
Author(s):  
Josef Finsterer ◽  
Adam Bastovansky
Keyword(s):  
Ischemic Stroke ◽  
Recurrent Stroke ◽  
Low Density Lipoprotein ◽  
Cerebral Arteries ◽  
Mitochondrial Disorder ◽  
Density Lipoprotein ◽  
Internal Capsule ◽  
Low Density ◽  
Megadolichobasilar Artery ◽  
Caucasian Female

Background: Dilative arteriopathy plus leucencephalopathy as a manifestation of a mitochondrial disorder (MID) is rare. Case report: In a 70yo Caucasian female, height 160cm, weight 62kg, with mild right-sided hemiparesis due to subacute ischemic stroke in the posterior leg of the left internal capsule, a megadolichobasilar artery and marked leucencephalopathy and gliosis of the pons were detected. In addition, microbleeds in a peripheral distribution at the cortical/subcortical border were noted. After the exclusion of various differentials, which could have explained her abnormalities, a MID was suspected. Conclusions: Dilative arteriopathy of the intra-cerebral arteries, in association with recurrent stroke and supra- and infratentorial leucencephalopathy, but the absence of neurofibromatosis or increased low-density lipoprotein values, is most likely attributable to a non-syndromic MID.

scholarly journals External auditory canal lesion: colorectal metastatic adenocarcinoma

2018 ◽  
pp. bcr-2018-224876 ◽  
Author(s):  
Aswathy James ◽  
Sharad Karandikar ◽  
Shobhit Baijal
Keyword(s):  
External Auditory Canal ◽  
Primary Tumour ◽  
Right Hemicolectomy ◽  
R0 Resection ◽  
Internal Auditory Meatus ◽  
Tissue Mass ◽  
Ascending Colon Cancer ◽  
Laparoscopic Right Hemicolectomy ◽  
The Right ◽  
Nose And Throat

The patient presented to the ear, nose and throat clinic with failed conservative treatment of persistent right otitis externa. On examination, the roof of the right ear canal was polypoid and the tympanic membrane could not be visualised. There was a fragile mass noted in the external auditory canal (EAC) which on microsuction started to bleed. CT internal auditory meatus and MRI internal auditory meatus identified soft tissue mass in the EAC. The patient underwent urgent examination under anaesthetic of the ear and biopsies were taken. He had a background of ascending colon cancer; Duke’s C1, pT4, N1 M0, R0 resection and had undergone laparoscopic right hemicolectomy with adjuvant chemotherapy, in the previous year. The biopsy results proved that the mass in the EAC was due to metastatic deposit of colorectal primary tumour. The patient also had a full body CT which revealed other new metastases. The patient is being treated with palliative chemotherapy.

scholarly journals Translabyrinthine approach to internal auditory meatus: A retrospective study

2018 ◽  
Vol 74 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Sunil Goyal ◽  
Kiran Natarajan ◽  
Amarnath Devarasetty ◽  
T. Sarankumar ◽  
Neha Chauhan ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Internal Auditory Meatus ◽  
Translabyrinthine Approach
Sign in / Sign up

Export Citation Format

Share Document