A rare spontaneous temporal meningoencephalocele with dehiscence into the pterygoid fossa

Nishikawa, Tasuku; Ishida, Hirotaka; Nibu, Ken‐ichi

doi:10.1016/j.anl.2004.07.004

Cited by 7 publications

(8 citation statements)

References 7 publications

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“…To the best to our knowledge, only five cases with a transalar sphenoidal encephalocele protruding into pterygoid fossa have been reported in the literature 3,8,9,10 .…”

Section: Discussionmentioning

confidence: 98%

Transalar Sphenoidal Encephalocele

2007

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“…To the best to our knowledge, only five cases with a transalar sphenoidal encephalocele protruding into pterygoid fossa have been reported in the literature 3,8,9,10 .…”

Section: Discussionmentioning

confidence: 98%

Transalar Sphenoidal Encephalocele

2007

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“…Differential diagnosis in cases of tumoral lesions in pterygoid fossa should be performed ( Table 1 ). 1 8 9 10 11 12 13 …”

Section: Discussionmentioning

confidence: 99%

Transpterygoid Approach to a Dermoid Cyst in Pterygopalatine Fossa

Ordones

Fornazieri

Pinna

et al. 2013

Int. Arch. Otorhinolaryngol.

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Objective To describe a case of dermoid cyst arising from the pterygopalatine fossa and review the literature. Methods We report a case of a 23-year-old man who suffered a car accident 2 years before otolaryngologic attendance. He had one episode of generalized tonic-clonic seizure and developed a reduction of visual acuity of the left side after the accident. Neurologic investigation was performed and magnetic resonance imaging revealed an incidental finding of a heterogeneous ovoid lesion in the pterygopalatine fossa, hyperintense on T2-weighted imaging. Results Endoscopic sinus surgery with transpterygoid approach was performed. The ovoid lesion was noted in the pterygopalatine fossa. Puncture for intraoperative evaluation showed a transparent thick fluid. Surprisingly, hair and sebaceous glands were found inside the cyst capsule. The cyst was excised completely. Histologic examination revealed a dermoid cyst. The patient currently has no evidence of recurrence at 1 year postoperatively. Conclusion This unique case is a rare report of a dermoid cyst incidentally diagnosed. An endoscopic transnasal transpterygoid approach may be performed to treat successfully this kind of lesion. Although rare, it should be considered in the differential diagnosis of expansive lesions in the pterygopalatine fossa, including schwannoma, angiofibroma, esthesioneuroblastoma, osteochondroma, cholesterol granuloma, hemangioma, lymphoma, and osteoma.

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“…[1][2][3] Previous reports have shown that temporal lobe encephaloceles in the lateral sphenoid sinus present with a variety of signs and symptoms, such as CSF rhinorrhea, meningitis, headache, vertigo, seizure, and some somatic complaints. [11][12][13][14] In addition to the low incidence, the fact that some of them are not related to a specific pathophysiology of this disease makes the early diagnosis difficult. Moreover, lateral sphenoid sinus encephaloceles are not readily noticeable on routine radiological exams unless the lesion is large enough to be detectable on ordinary axial CT scans.…”

Section: Discussionmentioning

confidence: 99%

Temporal Lobe Encephalocele in the Lateral Recess of the Sphenoid Sinus Presenting with Intraventricular Tension Pneumocephalus

Ohkawa

Nakao²,

Uematsu³

et al. 2010

Skull Base

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A basal encephalocele often shows an insidious clinical course. Only two cases of temporal lobe encephalocele accompanied with tension pneumocephalus have previously been reported. In this paper, we describe a case of lateral sphenoid sinus encephalocele presenting with intraventricular tension pneumocephalus. A 54-year-old man was referred to our institution presenting with intraventricular tension pneumocephalus. He had undergone ventriculoperitoneal shunt placement for postmeningitis hydrocephalus 3 months before this admission. Precise imaging examinations detected evidence suggestive of a lateral sphenoidal sinus recess encephalocele. Endoscopic transnasal approach was performed for surgical repair of the encephalocele. The encephalocele was removed with subsequent repair of the bony defect. Histological examination showed that the encephalocele includes a part of the ventricular system. This indicates that air might enter directly into the ventricular system after rupture of the temporal lobe encephalocele. A lateral sphenoid sinus encephalocele would potentially cause intraventricular tension pneumocephalus, although pneumocephalus is an extremely unusual complication of this type of basal encephaloceles.

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A rare spontaneous temporal meningoencephalocele with dehiscence into the pterygoid fossa

Cited by 7 publications

References 7 publications

Transalar Sphenoidal Encephalocele

Transalar Sphenoidal Encephalocele

Transpterygoid Approach to a Dermoid Cyst in Pterygopalatine Fossa

Temporal Lobe Encephalocele in the Lateral Recess of the Sphenoid Sinus Presenting with Intraventricular Tension Pneumocephalus

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