Experience with cerebellopontine angle epidermoids

Aaron Mohanty, Sastry Kolluri Venkatrama, Basrur Ravimohan Rao, Bangalore A. Chandramouli, Peruvumba N. Jayakumar, Bhabani Shankar Das

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

OBJECTIVE: Cerebellopontine angle (CPA) epidermoids, although of benign nature, are of considerable neurosurgical interest because of their close proximity and adherence to the cranial nerves and the brain stem. We describe our experience and attempt to correlate the final outcomes with the extent of surgical removal. METHODS: Twenty-five consecutive patients with CPA epidermoids that were surgically treated were reviewed, and the final outcomes were assessed. RESULTS: Thirteen patients had trigeminal neuralgia. In 7 of the 13 patients, trigeminal neuralgia was the only presenting feature. The epidermoid was confined to the CPA in each of 6 patients, and in each of 18, it had varying degrees of supratentorial extension. One patient had a predominant supratentorial epidermoid with extension to the CPA. The lesions were totally excised in 12 patients. Near-total removal was accomplished in eight patients, and in the remaining five, partial removal was accomplished. Transient worsening of the cranial nerve functions occurred in 11 patients, probably as a result of aggressive dissection of the capsule from the cranial nerves. In 9 of the 11 patients, the cranial nerve functions improved by the time of discharge. All of the patients who had trigeminal neuralgia were relieved of their symptoms. Eighteen patients were followed up for a mean period of 42 months, and none had symptoms of recurrence. CONCLUSION: Aggressive surgical removal results in transient but significant cranial nerve dysfunction in the postoperative period. A conservative approach is indicated for patients in whom the capsule is adherent to the brain stem and the cranial nerves.

Original languageEnglish (US)
Pages (from-to)24-30
Number of pages7
JournalNeurosurgery
Volume40
Issue number1
DOIs
StatePublished - Jan 1997
Externally publishedYes

Fingerprint

Cerebellopontine Angle
Cranial Nerves
Trigeminal Neuralgia
Brain Stem
Capsules
Postoperative Period
Dissection

Keywords

  • Cerebellopontine angle
  • Cysts
  • Epidermoid cyst
  • Outcome

ASJC Scopus subject areas

  • Clinical Neurology
  • Surgery

Cite this

Mohanty, A., Venkatrama, S. K., Rao, B. R., Chandramouli, B. A., Jayakumar, P. N., & Das, B. S. (1997). Experience with cerebellopontine angle epidermoids. Neurosurgery, 40(1), 24-30. https://doi.org/10.1097/00006123-199701000-00004

Experience with cerebellopontine angle epidermoids. / Mohanty, Aaron; Venkatrama, Sastry Kolluri; Rao, Basrur Ravimohan; Chandramouli, Bangalore A.; Jayakumar, Peruvumba N.; Das, Bhabani Shankar.

In: Neurosurgery, Vol. 40, No. 1, 01.1997, p. 24-30.

Research output: Contribution to journalArticle

Mohanty, A, Venkatrama, SK, Rao, BR, Chandramouli, BA, Jayakumar, PN & Das, BS 1997, 'Experience with cerebellopontine angle epidermoids', Neurosurgery, vol. 40, no. 1, pp. 24-30. https://doi.org/10.1097/00006123-199701000-00004
Mohanty A, Venkatrama SK, Rao BR, Chandramouli BA, Jayakumar PN, Das BS. Experience with cerebellopontine angle epidermoids. Neurosurgery. 1997 Jan;40(1):24-30. https://doi.org/10.1097/00006123-199701000-00004
Mohanty, Aaron ; Venkatrama, Sastry Kolluri ; Rao, Basrur Ravimohan ; Chandramouli, Bangalore A. ; Jayakumar, Peruvumba N. ; Das, Bhabani Shankar. / Experience with cerebellopontine angle epidermoids. In: Neurosurgery. 1997 ; Vol. 40, No. 1. pp. 24-30.
@article{4410d0ff45774ad495474a34c9a173e1,
title = "Experience with cerebellopontine angle epidermoids",
abstract = "OBJECTIVE: Cerebellopontine angle (CPA) epidermoids, although of benign nature, are of considerable neurosurgical interest because of their close proximity and adherence to the cranial nerves and the brain stem. We describe our experience and attempt to correlate the final outcomes with the extent of surgical removal. METHODS: Twenty-five consecutive patients with CPA epidermoids that were surgically treated were reviewed, and the final outcomes were assessed. RESULTS: Thirteen patients had trigeminal neuralgia. In 7 of the 13 patients, trigeminal neuralgia was the only presenting feature. The epidermoid was confined to the CPA in each of 6 patients, and in each of 18, it had varying degrees of supratentorial extension. One patient had a predominant supratentorial epidermoid with extension to the CPA. The lesions were totally excised in 12 patients. Near-total removal was accomplished in eight patients, and in the remaining five, partial removal was accomplished. Transient worsening of the cranial nerve functions occurred in 11 patients, probably as a result of aggressive dissection of the capsule from the cranial nerves. In 9 of the 11 patients, the cranial nerve functions improved by the time of discharge. All of the patients who had trigeminal neuralgia were relieved of their symptoms. Eighteen patients were followed up for a mean period of 42 months, and none had symptoms of recurrence. CONCLUSION: Aggressive surgical removal results in transient but significant cranial nerve dysfunction in the postoperative period. A conservative approach is indicated for patients in whom the capsule is adherent to the brain stem and the cranial nerves.",
keywords = "Cerebellopontine angle, Cysts, Epidermoid cyst, Outcome",
author = "Aaron Mohanty and Venkatrama, {Sastry Kolluri} and Rao, {Basrur Ravimohan} and Chandramouli, {Bangalore A.} and Jayakumar, {Peruvumba N.} and Das, {Bhabani Shankar}",
year = "1997",
month = "1",
doi = "10.1097/00006123-199701000-00004",
language = "English (US)",
volume = "40",
pages = "24--30",
journal = "Neurosurgery",
issn = "0148-396X",
publisher = "Lippincott Williams and Wilkins",
number = "1",

}

TY - JOUR

T1 - Experience with cerebellopontine angle epidermoids

AU - Mohanty, Aaron

AU - Venkatrama, Sastry Kolluri

AU - Rao, Basrur Ravimohan

AU - Chandramouli, Bangalore A.

AU - Jayakumar, Peruvumba N.

AU - Das, Bhabani Shankar

PY - 1997/1

Y1 - 1997/1

N2 - OBJECTIVE: Cerebellopontine angle (CPA) epidermoids, although of benign nature, are of considerable neurosurgical interest because of their close proximity and adherence to the cranial nerves and the brain stem. We describe our experience and attempt to correlate the final outcomes with the extent of surgical removal. METHODS: Twenty-five consecutive patients with CPA epidermoids that were surgically treated were reviewed, and the final outcomes were assessed. RESULTS: Thirteen patients had trigeminal neuralgia. In 7 of the 13 patients, trigeminal neuralgia was the only presenting feature. The epidermoid was confined to the CPA in each of 6 patients, and in each of 18, it had varying degrees of supratentorial extension. One patient had a predominant supratentorial epidermoid with extension to the CPA. The lesions were totally excised in 12 patients. Near-total removal was accomplished in eight patients, and in the remaining five, partial removal was accomplished. Transient worsening of the cranial nerve functions occurred in 11 patients, probably as a result of aggressive dissection of the capsule from the cranial nerves. In 9 of the 11 patients, the cranial nerve functions improved by the time of discharge. All of the patients who had trigeminal neuralgia were relieved of their symptoms. Eighteen patients were followed up for a mean period of 42 months, and none had symptoms of recurrence. CONCLUSION: Aggressive surgical removal results in transient but significant cranial nerve dysfunction in the postoperative period. A conservative approach is indicated for patients in whom the capsule is adherent to the brain stem and the cranial nerves.

AB - OBJECTIVE: Cerebellopontine angle (CPA) epidermoids, although of benign nature, are of considerable neurosurgical interest because of their close proximity and adherence to the cranial nerves and the brain stem. We describe our experience and attempt to correlate the final outcomes with the extent of surgical removal. METHODS: Twenty-five consecutive patients with CPA epidermoids that were surgically treated were reviewed, and the final outcomes were assessed. RESULTS: Thirteen patients had trigeminal neuralgia. In 7 of the 13 patients, trigeminal neuralgia was the only presenting feature. The epidermoid was confined to the CPA in each of 6 patients, and in each of 18, it had varying degrees of supratentorial extension. One patient had a predominant supratentorial epidermoid with extension to the CPA. The lesions were totally excised in 12 patients. Near-total removal was accomplished in eight patients, and in the remaining five, partial removal was accomplished. Transient worsening of the cranial nerve functions occurred in 11 patients, probably as a result of aggressive dissection of the capsule from the cranial nerves. In 9 of the 11 patients, the cranial nerve functions improved by the time of discharge. All of the patients who had trigeminal neuralgia were relieved of their symptoms. Eighteen patients were followed up for a mean period of 42 months, and none had symptoms of recurrence. CONCLUSION: Aggressive surgical removal results in transient but significant cranial nerve dysfunction in the postoperative period. A conservative approach is indicated for patients in whom the capsule is adherent to the brain stem and the cranial nerves.

KW - Cerebellopontine angle

KW - Cysts

KW - Epidermoid cyst

KW - Outcome

UR - http://www.scopus.com/inward/record.url?scp=0031026162&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031026162&partnerID=8YFLogxK

U2 - 10.1097/00006123-199701000-00004

DO - 10.1097/00006123-199701000-00004

M3 - Article

VL - 40

SP - 24

EP - 30

JO - Neurosurgery

JF - Neurosurgery

SN - 0148-396X

IS - 1

ER -