RESUMEN
Schwannomas are neurogenic tumors that arise from Schwann cells of the neural sheath. They are most often benign and solitary. Ancient schwannoma is a rare variant of schwannoma with a typical characteristics of a slow growing benign tumor. A case of ancient schwannoma which originated from the lingual nerve has not been reported in the literature yet. The clinical and histological aspects of this tumor are discussed and the literature regarding this rare entity is reviewed.
Asunto(s)
Nervio Lingual , Neurilemoma , Células de SchwannRESUMEN
Meningiomas account for approximately 13 to 18 per cent of all primary intracranial neoplasms. The majority of meningioma cases develops in the supratentorial compartment with only 8 to 9 per cent occurring in the posterior fossa. Twenty per cent of intracranial meningiomas eventually develop an extracranial extension. Intracranial tumors that extend to the middle ear and external auditory canal are uncommon. The most common pathway in the temporal bone is through the jugular foramen and foramen lacerum into the parapharyngeal space. When a meningioma gains access to the temporal bone, neurological symptoms usually develop. By the time symptoms become apparent, however, the tumor is usually quite large. The presentation was unusual in that there were no demonstrable neurological signs clinically, despite the large size of the intracranial tumor and mass effect. We experienced a case of extracranial meningioma in the external auditory canal that was extended from intracranial meningioma, and which was diagnosed with biopsy and radiographic examination. In this paper, we report this case with review of literature.
Asunto(s)
Biopsia , Neoplasias Encefálicas , Conducto Auditivo Externo , Oído Medio , Meningioma , Hueso TemporalRESUMEN
The diagnosis of internal jugular vein thrombosis (IJVT), a vascular disorder, can be easily overlooked. Disruption of blood flow through the internal jugular vein can take place in a variety of clinical settings. CT and ultrasonography are useful diagnostic tools. Recently, we experienced a case of IJVT after deep neck infection. This case showed sore throat, odynophagia and swelling of right submandibular area. CT scan revealed diffuse neck swelling and incomplete occlusion of the right internal jugular vein at the thyroid level. Treatment began with antibiotics and hydration. We present a case of IJVT after deep neck infection with literature review.