Can bone wax cause cholesterol granuloma in the petrous apex? A case report

BACKGROUND: Cholesterol granuloma (CG) is a rare entity but is the commonest lesion in the petrous apex. They are associated with chronic ear disease and previous temporal bone surgery. While bone wax has been known to cause foreign body reaction due to its non-resorbable property in the mastoid, it...

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Main Authors: Wong, Eugene Hung Chih, Chee Chean Limb, Cheng Ai Ong, Prepageran Narayanan
Format: Article
Language:English
English
Published: 2020
Subjects:
Online Access:https://eprints.ums.edu.my/id/eprint/25978/1/Can%20bone%20wax%20cause%20cholesterol%20granuloma%20in%20the%20petrous%20apex%20A%20case%20report.pdf
https://eprints.ums.edu.my/id/eprint/25978/2/Can%20bone%20wax%20cause%20cholesterol%20granuloma%20in%20the%20petrous%20apex%20A%20case%20report1.pdf
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author Wong, Eugene Hung Chih
Chee Chean Limb
Cheng Ai Ong
Prepageran Narayanan
author_facet Wong, Eugene Hung Chih
Chee Chean Limb
Cheng Ai Ong
Prepageran Narayanan
author_sort Wong, Eugene Hung Chih
collection UMS
description BACKGROUND: Cholesterol granuloma (CG) is a rare entity but is the commonest lesion in the petrous apex. They are associated with chronic ear disease and previous temporal bone surgery. While bone wax has been known to cause foreign body reaction due to its non-resorbable property in the mastoid, it has not been documented to cause CG formation. CASE PRESENTATION: We described a 43 years old male who presented with a right mastoid swelling, nine years after a right retro-sigmoid craniotomy and excision for a cerebellopontine angle meningioma. He also had multiple cranial neuropathies involving trigeminal, facial and vestibulocochlear nerves. Temporal bone CT and MRI showed features suggestive of cholesterol granuloma with extensive bony erosions. He was treated with surgical excision and drainage where bone wax residues were found intraoperatively. Histopathological analysis of the lesion confirmed the diagnosis of cholesterol granuloma. Post-operatively, the mastoid swelling resolved and his recovery was uneventful. CONCLUSION: Our case showed that CG could manifest as a complication of bone wax usage in a neurosurgical procedure. Even though further study is needed to draw a definitive conclusion on this theory, we believe this paper will contribute to the current literature as it is the only reported case of cholesterol granuloma with bone wax as the possible causative agent. This is important so that surgeons are aware of this potential complication and use this haemostatic agent more judiciously.
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spelling ums.eprints-259782020-09-21T00:22:33Z https://eprints.ums.edu.my/id/eprint/25978/ Can bone wax cause cholesterol granuloma in the petrous apex? A case report Wong, Eugene Hung Chih Chee Chean Limb Cheng Ai Ong Prepageran Narayanan R Medicine (General) BACKGROUND: Cholesterol granuloma (CG) is a rare entity but is the commonest lesion in the petrous apex. They are associated with chronic ear disease and previous temporal bone surgery. While bone wax has been known to cause foreign body reaction due to its non-resorbable property in the mastoid, it has not been documented to cause CG formation. CASE PRESENTATION: We described a 43 years old male who presented with a right mastoid swelling, nine years after a right retro-sigmoid craniotomy and excision for a cerebellopontine angle meningioma. He also had multiple cranial neuropathies involving trigeminal, facial and vestibulocochlear nerves. Temporal bone CT and MRI showed features suggestive of cholesterol granuloma with extensive bony erosions. He was treated with surgical excision and drainage where bone wax residues were found intraoperatively. Histopathological analysis of the lesion confirmed the diagnosis of cholesterol granuloma. Post-operatively, the mastoid swelling resolved and his recovery was uneventful. CONCLUSION: Our case showed that CG could manifest as a complication of bone wax usage in a neurosurgical procedure. Even though further study is needed to draw a definitive conclusion on this theory, we believe this paper will contribute to the current literature as it is the only reported case of cholesterol granuloma with bone wax as the possible causative agent. This is important so that surgeons are aware of this potential complication and use this haemostatic agent more judiciously. 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/25978/1/Can%20bone%20wax%20cause%20cholesterol%20granuloma%20in%20the%20petrous%20apex%20A%20case%20report.pdf text en https://eprints.ums.edu.my/id/eprint/25978/2/Can%20bone%20wax%20cause%20cholesterol%20granuloma%20in%20the%20petrous%20apex%20A%20case%20report1.pdf Wong, Eugene Hung Chih and Chee Chean Limb and Cheng Ai Ong and Prepageran Narayanan (2020) Can bone wax cause cholesterol granuloma in the petrous apex? A case report. International Journal of Surgery Case Reports, 72. pp. 587-589.
spellingShingle R Medicine (General)
Wong, Eugene Hung Chih
Chee Chean Limb
Cheng Ai Ong
Prepageran Narayanan
Can bone wax cause cholesterol granuloma in the petrous apex? A case report
title Can bone wax cause cholesterol granuloma in the petrous apex? A case report
title_full Can bone wax cause cholesterol granuloma in the petrous apex? A case report
title_fullStr Can bone wax cause cholesterol granuloma in the petrous apex? A case report
title_full_unstemmed Can bone wax cause cholesterol granuloma in the petrous apex? A case report
title_short Can bone wax cause cholesterol granuloma in the petrous apex? A case report
title_sort can bone wax cause cholesterol granuloma in the petrous apex a case report
topic R Medicine (General)
url https://eprints.ums.edu.my/id/eprint/25978/1/Can%20bone%20wax%20cause%20cholesterol%20granuloma%20in%20the%20petrous%20apex%20A%20case%20report.pdf
https://eprints.ums.edu.my/id/eprint/25978/2/Can%20bone%20wax%20cause%20cholesterol%20granuloma%20in%20the%20petrous%20apex%20A%20case%20report1.pdf
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