OBJECTIVE To provide a detailed anatomic description of middle ear endoscopy via different approaches. METHOD Using 0, 30 and 90 degree rigid endoscopes, 6 dry temporal bones and 11 temporal bone blocks were examined to define the average range of view obtained by three approaches: 1. via the external ear canal approach; 2. via a retroauricular incision: including two subdivided routes, the m...

The association between arachnoid cyst and subdural hygroma (SH) is rare. We report a case, presenting of left middle cranial fossa arachnoid cyst with traumatic SH and spontaneous resolution of SH. The patient was totally asymtomatic prior to the injury and his arachnoid cyst was detected incidentally during investigations following minor head trauma. Our case with normal neurological examinat...

We report on a 13-year-old boy with temporal lobe epilepsy associated with left hippocampal sclerosis and a contralateral arachnoid cyst in the middle cranial fossa (ACMCF). Chronic intracranial recording from subdural grid electrodes showed the left medial temporal lobe to be the ictal onset zone. After left anterior temporal lobectomy with hippocampectomy, seizure control was improved. ACMCF ...

We report a case of pigmented villonodular synovitis involving the temporomandibular joint that presented as a rapidly growing tumor with extension through the skull base into the middle cranial fossa. The case is of interest not only because of the unusual extensive infiltration of this tumor but also because of the role modern diagnostic imaging and endovascular therapeutic techniques played ...

We report the case of 22-year-old man with nontraumatic intracystic hemorrhage into a middle cranial fossa arachnoid cyst associated with a contiguous subacute subdural hematoma. Arachnoid cysts are benign intra-arachnoidal fluid collections frequently detected incidentally during neuroimaging. Rare complications of arachnoid cysts such as intracystic hemorrhage or subdural hematomas and subdur...

Introduction: Semicircular canal dehiscence syndrome (SCDS) is caused by a bony defect of the superior semicircular canal, resulting in autophony, bone conduction of bodily sounds and pseudo conductive hearing loss. Vestibular manifestations include sound or pressure evoked vertigo. Occluding the dehiscent canal was originally described via the middle cranial fossa approach however, an alternat...

Cavernous sinus hemangiomas are relatively rare but have characteristic imaging features. We present a case of a large extra-axial middle cranial fossa mass arising from the cavernous sinus in a 51-year-old female, and we describe the unique features and complications of this intracranial tumor. With the proper pre-operative diagnosis, an appropriate plan can be created for these highly vascula...

We report the case of 22-year-old man with nontraumatic intracystic hemorrhage into a middle cranial fossa arachnoid cyst associated with a contiguous subacute subdural hematoma. Arachnoid cysts are benign intra-arachnoidal fluid collections frequently detected incidentally during neuroimaging. Rare complications of arachnoid cysts such as intracystic hemorrhage or subdural hematomas and subdur...

The CT and MR findings of a nasopharyngeal nonossifying variant of an ossifying fibromyxoid tumor are presented. The findings are radiographically indistinguishable from more common malignant neoplasms encountered in this region. The tumor was isointense with muscle on T1-weighted images. On proton density- and T2-weighted images, the mass was mostly isointense with gray matter but contained so...

A 72-year-old woman presented with painful proptosis of the right eye and a large destructive tumour of the middle cranial fossa. A diagnosis of IgDK multiple myeloma was made, based on histopathologic and immunologic studies of the biopsy. Biochemistry and bone marrow examination further confirmed the myeloma as IgDK type. The clinical, radiological, and pathological findings are presented. Th...