1/16. Solitary plasmacytoma of the skull base presenting with unilateral sensorineural hearing loss.Solitary plasmacytoma of the skull base is a rare entity with only a few reported cases in the literature. We review the literature and present our experience with this lesion that produced ipsilateral sensorineural hearing loss, vertigo and ipsilateral sixth nerve palsy.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
2/16. Extradural meningioma in the left fronto-temporo-parietal region.A case of a 47-year-old male patient who presented with a history of complaints of headache, vertigo and an expanding painful swelling on the left side of the head over the last year is reported. The lump was 15 x 15 cm and protruded 1-3 centimeters. Neurological examination revealed the presence of a mild right hemiparesis with right central facial palsy. Plain skull x-ray film demonstrates a heterogeneous bone thickening in the left fronto-temporo-parietal region with a small osteolytic focus and spotted shadows. Computed tomography scan of the skull showed that a major part of the squamas of the frontal and temporal bones were transformed into spiculoform structures turned outwards and inwards. Thus the bone appeared thickened overall. There were no alterations in the cerebral structures. The tumour was completely removed. It was located extradurally and through the bones extended to the soft tissues under the skin. The histological findings showed a meningioma with hemorrhages and necroses and the presence of lipids containing xanthochromic cells. After a surgical extirpation of the tumour a reduction of the neurological symptomatology and subjective complaints was observed.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
3/16. endolymphatic sac tumor: a case report.Papillary tumors of the temporal bone are aggressive neoplasms which may occur sporadically or as a part of von hippel-lindau disease. The term 'endolymphatic sac tumor' identifies the origin of these rare tumors. The clinical manifestations are sensorineural hearing loss, facial paralysis, cerebellar disorders and vertigo. The tumor is locally invasive, destructive and hypervascular exhibiting consistent imaging and histopathologic features. The treatment of choice is the total removal of the lesion although complete excision of the advanced lesion is nearly impossible due to the anatomic complexity of the endolymphatic sac and distinct patterns of extension. We present a 50-year-old male patient with endolymphatic sac tumor with left sided sensorineural hearing loss and review the literature.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
4/16. Pediatric giant cell granuloma of the temporal bone: a case report and brief review of the literature.Giant cell granuloma of the skull base is a distinct rare clinicopathologic lesion, which progressively destroys the involved bone. It causes increased intracranial pressure and mass effect on the brain. Histologically it may mimic an aneurysmal bone cyst, giant cell tumour and the brown tumour of hyperparathyroidism. Although cited by some authors, the role of trauma in its aetiology is still considered controversial. Authors present an interesting case of a 12 year old Omani boy who sustained a cricket bat injury to his right temporal region from which he initially recovered but later on progressively developed vertigo, tinnitus, right hearing loss and a mild right facial weakness. Computed tomography (CT scan) and magnetic resonance imaging (MR scan) revealed a large destructive lesion of the temporal bone. Microsurgical excision was curative. Interesting clinicoradiological findings are presented with a brief review of the literature.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
5/16. Co-existing cholesteatoma and vestibular schwannoma.A 69-year-old man presented with a cholesteatoma in the right mastoid process and a vestibular schwannoma at the left internal acoustic meatus. cholesteatoma co-existing with a vestibular schwannoma has not been documented previously in the contemporary literature. The clinical dilemma in the management of his progressive bilateral hearing loss is discussed. He presented with dizziness and bilateral hearing loss worse on the right side. Pressure over the mastoid process elicited vertigo and nystagmus. He had no history of previous operation or infection in the ear canal. Audiograms confirmed high-tone hearing loss. Radiological investigations revealed a symptomatic cholesteatoma on the right side and an incidental vestibular schwannoma on the left. We have elected to manage both lesions conservatively. Bilateral cholesteatoma and bilateral vestibular schwannomas have been previously reported. Co-existing lesions, as in our patient have, however, not been reported previously. The management options of his hearing loss are discussed.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
6/16. Hyperostotic paraganglioma of occipitotemporal bone.A 25-year-old male presented with off-and-on vertigo of 10-year duration. He had left-sided cerebellar signs, left vocal cord paresis, and minimal left-sided hearing impairment. Computed tomography of the head revealed significant hyperostosis of squamous occipital, mastoid, and petrous temporal bone with no adjacent soft tissue mass. On excision, it turned out to be paraganglioma. paraganglioma as a pure bony mass is not reported in the literature. The site of origin of such a tumor could not be ascertained, even on generous screening. The tumor remained nonsecretory on clinical and biochemical investigations.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
7/16. Inflammatory myofibroblastic tumor of the temporal bone.Inflammatory myofibroblastic tumors include a diverse group of lesions characterized by inflammatory cell infiltration and variable fibrotic responses. Occurrence in the temporal bone is unusual. We present CT and MR imaging findings of an inflammatory myofibroblastic tumor of the temporal bone in a 26-year-old patient with repeated paroxystic episodes of rotatory vertigo that occurred over a few days. CT and MR imaging revealed a homogeneously enhancing soft-tissue mass of the right mastoid with bone erosion of the tegmen and extensive dural thickening. The mass resembled a malignant tumor, and the patient underwent an extended mastoidectomy through a retroauricular approach. Microscopic examination showed myofibroblastic spindle cells with mixed inflammatory infiltrate, and the pathologic diagnosis was inflammatory myofibroblastic tumor.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
8/16. temporal bone secretory meningioma presenting as a middle ear mass.A 44-year-old woman presented with a history of increasing left hypoacusis and sporadic vertigo. CT scan revealed a tumor occupying the mastoid, middle ear, and external auditory canal. After surgical removal, a typical secretory meningioma was diagnosed. The histological hallmark and the immunohistochemical profile of secretory meningiomas are reviewed. The differential diagnosis of this tumor in this location is also commented on. As far as we know, primary temporal bone meningiomas with secretory histology have not been previously reported in the medical literature.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
9/16. Giant cell tumor of the petrous temporal bone with direct invasion into the middle ear.Giant cell tumor (GCT) is an uncommon primary bone tumor. The GCT mostly involves the extremity long bones. Rare is a GCT with tumoral growth in the cranium, especially other than the sphenoid bone. We herein report a 31-year-old male patient presenting with ipsilateral hearing loss and episodes of vertigo due to a large lobulated GCT of the right petrous temporal bone extending into the contiguous middle cranial fossa, infratemporal space, middle ear and external ear canal. He was treated with a macroscopically radical tumor excision followed by conventional megavoltage radiotherapy. The patient remains free of clinical and radiological evidences of tumoral recurrence six years after treatment. This experience supports the rationale for the combined treatment with radical excision plus irradiation toward this rare neoplasm when vigorous invasion of the skull base is encountered.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
10/16. magnetic resonance imaging in the diagnosis of temporal bone and skull base lesions.Six patients are presented in whom total reliance on magnetic resonance imaging (MRI) interpretations would have resulted in less than ideal treatment. The misleading information on magnetic resonance imaging could be divided into two types; as follow: type I were those in which there was no signal but nonosseous pathology was present, and in type II an abnormal signal was present but misinterpreted. In three of these patients (cases, 2, 3, and 5), information gained from more traditional means (history, physical examination, audiologic and vestibular testing, and computed tomography) led to proper treatment, whereas, in two patients (cases 4 and 6), treatment exceeded that required by the disease process. In one patient (case 1), ideal therapy resulted, despite a negative magnetic resonance imaging study, when a small intracanalicular tumor was found fortuitously during a translabyrinthine vestibular nerve section for vertigo. Although magnetic resonance imaging provides excellent supplemental information to more traditional means of diagnosis, it cannot be used entirely in their place. As gadolinium-diethylene triamine pentaacetic acid (Gd-DTPA) becomes more readily available, as the resolution of magnetic resonance imaging improves, and as we gain more familiarity with this diagnostic modality, misleading information from these studies should decrease.- - - - - - - - - - ranking = 1keywords = vertigo (Clic here for more details about this article) |
| | Next -> |