Extra-Axial Cavernoma of the Cerebellopontine Angle: A Case Study and Review of Literature

Tarabay, Antonio; Rocca, Alda; Maeder, Philippe; Simonin, Alexandre; Messerer, Mahmoud; Daniel, Roy Thomas

doi:10.1016/j.wneu.2019.05.034

Cited by 13 publications

(9 citation statements)

References 16 publications

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“…For cystic tumors in the CPA, differential diagnoses include schwannoma, endodermal sinus tumor (neurenteric cyst), hemangioblastoma, cavernous malformation, meningioma, teratoma, epidermoid cyst, cysticercus, and ependymal cyst. [14][15][16][17][18][19][20][21][22][23][24] In the present case, MRI revealed a cystic tumor without any enhancement by the gadoliniumcontrast agent. Epidermoid cysts, endodermal sinus tumors, and ependymal cysts are typically nonenhanced lesions found on the CPA.…”

Section: Secondary Hfs and Differential Diagnosis Of The Cystic Lesionsupporting

confidence: 47%

Arachnoid cyst alone causes hemifacial spasm: illustrative case

Ozaki

Higuchi

Nakano

et al. 2022

Journal of Neurosurgery: Case Lessons

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BACKGROUND Hemifacial spasm (HFS) due to an arachnoid cyst at the cerebellopontine angle is rare. Here, the authors reported such a case and analyzed the mechanism of facial nerve hyperactivity by reviewing the literature. OBSERVATIONS A 40-year-old man presented with right HFS for the past 3 years. Preoperative magnetic resonance imaging revealed a right cerebellopontine angle cystic mass with high intensity on T2-weighted images, low intensity on T1-weighted and diffusion-weighted images, and no contrast effects. Cyst excision and decompression of the facial nerve using a lateral suboccipital approach to monitor abnormal muscle response (AMR) resulted in permanent relief. The cyst was histologically compatible with an arachnoid cyst. LESSONS In the present case, when the cyst was dissected, the AMR disappeared and no offending arteries were detected around the root exit zone. Therefore, the cyst itself was responsible for HFS, for which AMR was useful. Limited cases of HFS due to arachnoid cysts without neurovascular compression have been previously reported. The authors suggested that pulsatile compression by the cyst results in facial nerve hyperactivity and secondary HFS.

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Section: Secondary Hfs and Differential Diagnosis Of The Cystic Lesionsupporting

confidence: 47%

Arachnoid cyst alone causes hemifacial spasm: illustrative case

Ozaki

Higuchi

Nakano

et al. 2022

Journal of Neurosurgery: Case Lessons

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“…When reviewing the current data, most of the extra axial located cavernoma are diagnosed around and in the cavernous sinus, 1 2 3 4 5 6 7 8 9 10 11 parasellar, suprasellar, 12 13 14 15 16 17 18 in the cerebellopontine angle, 42 43 44 45 46 47 48 49 and lateral to midbrain and medulla.…”

Section: Discussion and Literature Reviewmentioning

confidence: 99%

Convexity Dura-Based Cerebral Cavernous Malformation Mimicking Meningioma: A Case Report and Literature Review

et al. 2022

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Cavernous angioma, cavernoma, cavernous hemangioma, also called cerebral cavernous malformation (when present in the brain), are benign vascular malformations, usually intraparenchymal; however, a few reported cases are in the extra-axial location—as middle cranial fossa, near the cavernous sinuses, and in the cerebellopontine angle—and are rarely reported as dura-based convexity lesion resembling meningioma. We report a giant dura-based, convexity, a cerebral cavernous malformation. We wish to notify the case as occurring at a rare location and a large-sized cerebral cavernous malformation. A case of young female presented with a long-standing history of headache. Computed tomography scan and magnetic resonance imagings (MRIs) suggested right occipital dura-based large mass lesion of approximately 5 cm in diameter. The lesion was excised and pathology studies confirmed the diagnosis of a cerebral cavernous malformation. A follow-up MRI confirmed total resection of the lesion and the patient had a smooth postoperative recovery.

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“…In general, such lesions are considered to be histologically benign, however cases of malignant transformation have been reported [13,14]. Schwannomas [15], choroid plexus papillomas [16] and cavernous haemangiomas [17] Remission of symptoms usually follows fenestration of the cyst regardless of the surgical approach [18]. Moreover, E. J. Lee and Y. S. Ra [18], in their series of 110 patients with surgically treated intracranial cysts, found 6 patients without radiologic evidence of reduction in the size of the cyst, requiring additional operations.…”

Section: Discussionmentioning

confidence: 99%

Mass phenomena from a cerebellopontine angle arachnoid cyst: case report

Apostolakis

Karagianni

Mylonakis

et al. 2022

Nejrohirurgiâ (Mosk.)

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Introduction. Arachnoid cysts are benign lesions comprising about 1 % of all intracranial space occupying lesions. The majority are asymptomatic, while surgical intervention, consisting of fenestration, is suggested in the presence of mass phenomena.The aim of the study – to present the case of a patient with arachnoid cysts in the cerebellopontine angle and its treatment.Materials and methods. A 53‑years old female patient was referred to our Department of Neurosurgery for the surgical management of a cerebellopontine angle mass. The patient reported tingling sensation and causalgia of her left hemiface, dysarthria, hoarseness, difficulty swallowing solid food and liquids, tinnitus and pain distributed along the ophthalmic branch of the trigeminal nerve.Results. The patient was subjected to retrosigmoid craniotomy with fenestration of the cyst and concurrent placement of a Torkildsen shunt. No complete resection of the capsule of the cyst was attempted, due to its tight adhesions to the adjacent structures. Postoperatively, there was an improvement in the dysarthria and swallowing of the patient.Conclusions. Cerebellopontine angle cystic lesions while histologically benign, may become clinically apparent due to compression of adjacent structures. Simple fenestration of the cyst may be sufficient for the remission of symptoms.

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Extra-Axial Cavernoma of the Cerebellopontine Angle: A Case Study and Review of Literature

Cited by 13 publications

References 16 publications

Arachnoid cyst alone causes hemifacial spasm: illustrative case

Arachnoid cyst alone causes hemifacial spasm: illustrative case

Convexity Dura-Based Cerebral Cavernous Malformation Mimicking Meningioma: A Case Report and Literature Review

Mass phenomena from a cerebellopontine angle arachnoid cyst: case report

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