Abstract
Purpose
We report a very rare case of a fast-growing benign fibrous histiocytoma at the temporal bone.
Methods
A 1-year-old girl was referred for investigation of a right temporal mass that increased during 2-week observation. Imaging studies showed a lytic, loculated skull tumor at the left temporal bone. On magnetic resonance imaging scans, the tumor was isointense on T1- and relatively high-intense on T2-weighted images. The tumor was mostly homogeneously enhanced by gadolinium. On diffusion-weighted images, it was iso- to relatively low-intense; perfusion-weighted images revealed low perfusion.
Results
Complete macroscopic resection of the tumor was performed. Immunohistochemical analysis showed that the tumor was positive for CD68 and α-smooth muscle actin and negative for CD1a and CD34; the MIB-1 labeling index was 4 %. A diagnosis of primary benign fibrous histiocytoma of the skull was made. At 6-month follow-up, there were no clinical or radiological signs of tumor recurrence and/or metastasis.
Conclusions
We review the clinical, radiological, and immunohistochemical characteristics of benign fibrous histiocytoma at the skull.
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Acknowledgments
We thank U. Petralia for the editorial review. This study was partly supported by the Japan Society for the Promotion of Science Grant-in-Aid for Scientific Research (C) number 25462262.
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The authors have no conflicts of interest to disclose.
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Yamasaki, F., Takayasu, T., Nosaka, R. et al. Benign fibrous histiocytoma arising at the temporal bone of an infant—case report and review of the literature. Childs Nerv Syst 32, 189–193 (2016). https://doi.org/10.1007/s00381-015-2822-3
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DOI: https://doi.org/10.1007/s00381-015-2822-3