Abstract
Background
Skull chondroblastoma is extremely rare. We described in this study the first case of petrousal bone apex chondroblastoma.
Methods
The tumor occurred in a 12-year-old girl and was revealed by left hypoacusis, vertigo, and walking instability. Computerized tomography scan depicted well-demarcated and osteolytic lesion of the left petrousal bone just before the internal acoustic meatus. The tumor was operated on by a subtemporal approach with a subtotal resection. Lesion recurred and was operated a second time by a combined approach subtemporal and translabyrinthine. This treatment was completed by radiotherapy. We used a combination of photon therapy and proton therapy. Outcome was good and free of recurrence 36 months after the second operation.
Conclusion
Proton therapy can be particularly useful for skull base tumors frequently radioresistant and near very important structures. This case is the first one of a successful treatment by proton therapy for chondroblastoma recurrence.
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Dran, G., Niesar, E., Vandenbos, F. et al. Chondroblastoma of the apex portion of petrousal bone. Childs Nerv Syst 23, 231–235 (2007). https://doi.org/10.1007/s00381-006-0201-9
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DOI: https://doi.org/10.1007/s00381-006-0201-9