Microanatomy do ângulo ponto-cerebelar com análise morfométrica do meato acústico interno

Barreto, Eduardo Carlos; Carvalho, Gustavo Adolpho de

doi:10.1590/S0004-282X1993000200011

Resumos

Foram dissecados com auxílio de microscópio cirúrgico 12 ângulos ponto-cerebelares em cadáveres de adultos. Os seguintes parâmetros foram analisados: dimensões ântero-posterior (horizontal) e súpero-inferior (vertical) do meato acústico interno (MAI). Além dessas dimensões foram determinadas suas distâncias para as seguintes estruturas: cavum de Meckel, forame jugular superior e inferior (CM, FJS e FJI, respectivamente). Foi utilizada fórmula matemática para o cálculo da área do meato acústico interno. Este estudo contribui para melhor compreensão da microneuroanatomiia do ângulo ponto-cerebelar e parâmetros morfométricos ósseos associados, em indivíduos brasileiros.

meato acústico interno; ângulo ponto-cerebelar; microanatomia

Twelve cerebello-pontine angles of the corpses of six adults were dissected with the aid of a surgical microscope. The following parameters were analyzed: the superior-inferior (vertical) and the anterior-posterior (horizontal) dimensions of the internal acoustic meatus (IAM); and the distances from the IAM to the Meckel's cave, the superior jugular foramen (SJF) and the inferior jugular foramen (IJF). We used a mathematical formula to calculate the area of the IAM. Important variations in the IAM's measurements were found, main'ly concerning its area. This study contributes to a better understanding of cerebello-pontine angle (CPA) structures and their relaionships wih osseous parameters in Brazilian individuals.

internal acoustic meatus; cerebello-pontine angle; microanatomy

Eduardo Carlos Barreto^I; Gustavo Adolpho de Carvalho^II

^IProfessor-Auxiliar, Setor de Neuroanatomia, Departamento de Anatomia - UERJ e Disciplina de Neurocirurgia do Hospital Universitário Pedro Ernesto (HUPE-UERJ)

^IIEstagiário do Setor de Neuroanatomia, Departamento de Anatomia - UERJ e Interno do HUPE-UERJ

RESUMO

Foram dissecados com auxílio de microscópio cirúrgico 12 ângulos ponto-cerebelares em cadáveres de adultos. Os seguintes parâmetros foram analisados: dimensões ântero-posterior (horizontal) e súpero-inferior (vertical) do meato acústico interno (MAI). Além dessas dimensões foram determinadas suas distâncias para as seguintes estruturas: cavum de Meckel, forame jugular superior e inferior (CM, FJS e FJI, respectivamente). Foi utilizada fórmula matemática para o cálculo da área do meato acústico interno. Este estudo contribui para melhor compreensão da microneuroanatomiia do ângulo ponto-cerebelar e parâmetros morfométricos ósseos associados, em indivíduos brasileiros.

Palavras-chave: meato acústico interno, ângulo ponto-cerebelar, microanatomia.

SUMMARY

Twelve cerebello-pontine angles of the corpses of six adults were dissected with the aid of a surgical microscope. The following parameters were analyzed: the superior-inferior (vertical) and the anterior-posterior (horizontal) dimensions of the internal acoustic meatus (IAM); and the distances from the IAM to the Meckel's cave, the superior jugular foramen (SJF) and the inferior jugular foramen (IJF). We used a mathematical formula to calculate the area of the IAM. Important variations in the IAM's measurements were found, main'ly concerning its area. This study contributes to a better understanding of cerebello-pontine angle (CPA) structures and their relaionships wih osseous parameters in Brazilian individuals.

Key words: internal acoustic meatus, cerebello-pontine angle, microanatomy.

Full text available only in PDF format.

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Agradecimentos Agradecemos a contribuição dos Professores Mandarim-de-Lacerda (Departamento de Anatomia-UERJ) e Carlos Telles (Disciplina de Neurocirurgia-HUPE-UERJ) e ao Sr. Mário Espínola durante a execução do estudo.

Aceite: 21-setembro-1992.

Dr. Gustavo Adolpho C. de Carvalho - Rua Bambina 56 conj. 105 - 22251-050 Rio de Janeiro RJ - Brasil. Fax (5521) 2666485.

Trabalho realizado no Setor de Neuroanatomia do Departamento de Anatomia da Universidade do Estado do Rio de Janeiroi (UERJ)

Apoio da FAPERJ (Processo no E-29/170.077/90).

Apresentação: 2º Congresso da Sociedade de Neurocirurgia do Rio de Janeiro (2 a 4-julho-1902)

1. Aherne WA, Dunnil MS. Morphometry. London: Edward Arnold, 1982.
2. Benedetti A, Curri D, Oarbonin C. Aneurysm of the internal auditory artery revealed by a partial cerebellopontine angle syndrome. Neurochirurgia 1975, 18:126-130.
3. Canigiani G. Nativdiagnostik mit Tomographie der Kleinhirnbrueckelwink Tumoren. In Pleaster D, Wende S, Nakayama N (eds): Kleinhirnbruecklwinkel Tumoren. Diagnostik und Therapie. Berlin: Springer-Verlag, 1978, p 92-120.
4. Fisch U. Otochirurgische Behandlung des Acusticusneurinoms. In Plester D, Wende S, Nakayama N (eds): Kleinhirnbrueckenwinkel Tumoren. Diagnostik und Therapie. Berlin: Springer-Verlag, 1978, p 196-214.
5. Haines SJ, Janetta PJ, Zorub DS. Microvascular relations of the trigeminal nerve: an anatomical study with clinical correlation. J Neurosurg 1980, 52:381-386.
6. Hardy DG, Rhoton AL. Microsurgical relationships of the superior cerebellar artery and trigeminal nerve. J Neurosurg 1978, 49:669-678.
7. Hutchins LG, Harnsberger HR, Jacobs JM, Apfelbaum RI. Trigeminal neuralgia (tic douloureux): MR imaging assessment. Radiology 1990, 175:837-841.
8. Jannetta PJ. Treatment of trigeminal neuralgia by suboccipital and transtentorial cranial Médicas, Univ Nac Rosario 1981, 14:42-49.
9. Klun B, Prestor B. Microvascular relations of the trigeminal nerve: an anatomical study. Neurosurgery 1986, 19:535-539.
10. Lang J. Surgical anatomy of the skull base. In Samii M, Draf W (eds): Surgery of the skull base. An interdisciplinary approach. Berlin: Springer-Verlag, 1989, p 72-104.
11. Mendelowitsch A, Radue EW, Gratzl O. Aneurysm, arteriovenous malformation and arteriovenous fistula in posterior fossa compression, syndrome. Eur Neurol 1990, 30:338-342.
12. Renzi N, Miguel JC, Diap G. Relación vasculo-nerviosa del V par. Rev Fac Ciencias Médicas, Univ Nac Rosario 1981, 14:42-49.
13. Shelden CH, Pudenz RH, Freshwater DB, Crue BL. Compression rather than decompression for trigeminal neuralgia, J Neurosurg 1955, 12:123-126.
14. Tash RR, Size G, Leslie DR. Trigeminal neuralgia: MR imaging features. Radiology 1989, 172:767-770.
15. Yasargil, MG. Mikrochirurgie der Kleinhirnbrueckenwinkel Tumoren. In Plester D, Wende S, Nakayama N (eds): Kleinhirnbrueckenwinkel Tumoren. Diagnostik und Therapie. Berlin: Springer-Verlag, 1978, p 215-257.

Microanatomy do ângulo ponto-cerebelar com análise morfométrica do meato acústico interno

Microanatomy of cerebello-pontine angle is Brazilian specimens with special remarks on the internal acoustic meatus

Datas de Publicação

Publicação nesta coleção
19 Jan 2011
Data do Fascículo
Jun 1993

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] 1. Aherne WA, Dunnil MS. Morphometry. London: Edward Arnold, 1982.

[2] 2. Benedetti A, Curri D, Oarbonin C. Aneurysm of the internal auditory artery revealed by a partial cerebellopontine angle syndrome. Neurochirurgia 1975, 18:126-130.

[3] 3. Canigiani G. Nativdiagnostik mit Tomographie der Kleinhirnbrueckelwink Tumoren. In Pleaster D, Wende S, Nakayama N (eds): Kleinhirnbruecklwinkel Tumoren. Diagnostik und Therapie. Berlin: Springer-Verlag, 1978, p 92-120.

[4] 4. Fisch U. Otochirurgische Behandlung des Acusticusneurinoms. In Plester D, Wende S, Nakayama N (eds): Kleinhirnbrueckenwinkel Tumoren. Diagnostik und Therapie. Berlin: Springer-Verlag, 1978, p 196-214.

[5] 5. Haines SJ, Janetta PJ, Zorub DS. Microvascular relations of the trigeminal nerve: an anatomical study with clinical correlation. J Neurosurg 1980, 52:381-386.

[6] 6. Hardy DG, Rhoton AL. Microsurgical relationships of the superior cerebellar artery and trigeminal nerve. J Neurosurg 1978, 49:669-678.

[7] 7. Hutchins LG, Harnsberger HR, Jacobs JM, Apfelbaum RI. Trigeminal neuralgia (tic douloureux): MR imaging assessment. Radiology 1990, 175:837-841.

[8] 8. Jannetta PJ. Treatment of trigeminal neuralgia by suboccipital and transtentorial cranial Médicas, Univ Nac Rosario 1981, 14:42-49.

[9] 9. Klun B, Prestor B. Microvascular relations of the trigeminal nerve: an anatomical study. Neurosurgery 1986, 19:535-539.

[10] 10. Lang J. Surgical anatomy of the skull base. In Samii M, Draf W (eds): Surgery of the skull base. An interdisciplinary approach. Berlin: Springer-Verlag, 1989, p 72-104.

[11] 11. Mendelowitsch A, Radue EW, Gratzl O. Aneurysm, arteriovenous malformation and arteriovenous fistula in posterior fossa compression, syndrome. Eur Neurol 1990, 30:338-342.

[12] 12. Renzi N, Miguel JC, Diap G. Relación vasculo-nerviosa del V par. Rev Fac Ciencias Médicas, Univ Nac Rosario 1981, 14:42-49.

[13] 13. Shelden CH, Pudenz RH, Freshwater DB, Crue BL. Compression rather than decompression for trigeminal neuralgia, J Neurosurg 1955, 12:123-126.

[14] 14. Tash RR, Size G, Leslie DR. Trigeminal neuralgia: MR imaging features. Radiology 1989, 172:767-770.

[15] 15. Yasargil, MG. Mikrochirurgie der Kleinhirnbrueckenwinkel Tumoren. In Plester D, Wende S, Nakayama N (eds): Kleinhirnbrueckenwinkel Tumoren. Diagnostik und Therapie. Berlin: Springer-Verlag, 1978, p 215-257.