Hearing conservation in acoustic neuroma surgery via the retrosigmoid approach depends upon a good exposure of the internal auditory canal from behind avoiding labyrinthine injury. The accessibility is influenced largely by the individual characteristics of the temporal bone and the variability of the surgical landmarks is the result of different skull base shapes among different races. The aim...

We herein report on a patient with a cerebral aneurysm located at the petrous portion of the internal carotid artery (ICA). An 18-year-old male, previously diagnosed with neurofibromatosis, was referred to our emergency service complaining of severe headache, pulsatile tinnitus, nausea, and vomiting which occurred suddenly. Neuro-radiological studies including computed tomography and magnetic r...

側頭骨錐体部を介した髄液漏は，稀ではあるものの難治性の頭蓋内感染症を生じることが知られている．その原因には頭部外傷，錐体骨周辺の手術，腫瘍，放射線治療，中耳炎，先天性，特発性などが報告されているが，その原因の如何を問わず，繰り返す髄膜炎や致死的な重症頭蓋内感染症を生じうる．治療には髄液の漏出部位の正確な特定と速やかな閉鎖が推奨されるが，画像診断では同定困難なことが多い．そのため漏出する可能性がある部位を推測して同定することが重要である．本報告では経頭蓋的なアプローチによる欠損部の修復術により良好な経過をたどった治療経験をふまえ，効果的な修復術を達成するための工夫について述べる．

Correction After the publication of this abstract [1], we found some mistakes in the text. In details: Methods section: the correct sentence is “We modified these protocol improving screening criteria to all patients with petrous bone fracture, even without carotid canal involvement”. Results section: the correct sentence is “According to our proposed modified Memphis criteria, 53 patients (ins...

A 60-year-old man was referred to the ENT department for intense episodic vertigo triggered by loud sounds. Pure tone audiometry and otoneurological assessment, including videonystagmography using auditory stimulation and cervical vestibular evoked myogenic potential measures, conducted to the hypothesis of a third window syndrome in the left ear. Results from the high-resolution computed tomog...

We describe the unusual case of a 9-month-old Caucasian girl with a retropharyngeal abscess secondary to a mastoid abscess who presented with torticollis. The retropharyngeal abscess was caused by pus from the mastoid abscess tracking down under the petrous part of the temporal bone to reach the retropharyngeal space via the fossa of Rosenmüller. We believe that this is the first time that this...

A 41-year-old man presented with a large mass bulging over the suprazygomatic temporal region. Neuroradiological examination showed that the huge extra-axial mass with osteolytic character originated from the upper surface of the petrous bone. Preoperative obliteration of the feeding arteries with super-selective intravascular embolization was helpful for the total removal of the tumor. Histolo...

There are many criteria for sexual diamorphism of crania after puberty such as prominence of superciliary arches, breadth of Foramen magnum, depth of diagastric groove, width of Zygomatic arches, length and breadth of mastoid process but least data is available for sexual dimorphism. As CC is a Greek word means sleep. Greek ancestors thought that, the internal carotid artery, sympathetic nerve ...