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Chordoma of petrosal mastoid region: A case report
Jian-Jun Hua1, Ming-Liang Ying1, Zhen-Wei Chen2
1Department of Radiology, Jinhua Municipal Central Hospital, Jinhua 321000, Zhejiang Province, China.
Background:
Chordoma is a rare low-grade malignant tumor originating from embryonic notochordal tissue mainly occurring in the axial bone, mostly in the spheno-occipital junction and sacrococcyx, which accounts for approximately 1% of all malignant bone tumors and 0.1%-0.2% of intracranial tumors. Chordoma in the petrous mastoid region is rare.
Case Summary:
We describe a 36-year-old male patient with chordoma in the left petrous mastoid region. The main clinical manifestations were pain and discomfort, which lasted for 2 years. Magnetic resonance imaging showed a lobulated mass in the left petrous mastoid with an unclear boundary and obvious enhancement. The tumor was completely removed after surgical treatment, and a histological examination confirmed that the tumor was a chordoma. During 5 years of follow-up, no clinical or radiological evidence of recurrence or metastasis was found.
Conclusion:
Chordoma in the petrosal mastoid region is rare but should be included in differential diagnosis of petrosal mastoid tumors.
