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  1. Raman R
    PMID: 23119414 DOI: 10.1007/BF02991691
    An alternate approach to the mastoid antrum for acellular mastoid is presented.
    Matched MeSH terms: Petrous Bone
  2. Wong EHC, Lim CC, Ong CA, Narayanan P
    Int J Surg Case Rep, 2020;72:587-589.
    PMID: 32698294 DOI: 10.1016/j.ijscr.2020.06.086
    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.

    Matched MeSH terms: Petrous Bone
  3. Asha'Ari ZA, Ahmad R, Rahman J, Kamarudin N, Ishlah LW
    J Laryngol Otol, 2011 Aug;125(8):781-5.
    PMID: 21524330 DOI: 10.1017/S0022215111000545
    To study the prevalence and patterns of contrecoup injury in traumatic temporal bone fracture cases.
    Matched MeSH terms: Petrous Bone/injuries
  4. Asha'ari ZA, Ahmad R, Rahman J, Yusof RA, Kamarudin N
    Auris Nasus Larynx, 2012 Apr;39(2):151-5.
    PMID: 21592698 DOI: 10.1016/j.anl.2011.02.010
    To study the relationship pattern of intracranial hemorrhage in cases of traumatic petrous temporal bone fracture.
    Matched MeSH terms: Petrous Bone/injuries*
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