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Giant trichoblastoma mimicking malignancy

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Abstract

We report a case of giant trichoblastoma, a rare benign hair germ tumor. A 73-year-old man presented with a soft-tissue mass on his upper arm. Magnetic resonance imaging analysis revealed an unique mosaic pattern on T2-weighted images. Needle biopsy disclosed a keratinizing tumor suggesting squamous cell carcinoma. The size of the tumor was 9.5 × 7 × 9.5 cm, one of the largest trichoblastomas ever reported. The rarity and gigantic size of the tumor, together with its misleading clinical features, prompted us to report our case.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan e-mail: tanakas-ort@h.u-tokyo.ac.jp Tel.: +81-3-3815-5411 ext 3375, Fax: +81-3-3818-4082, , , , , , JP

    T. Ogata, S. Tanaka, T. Goto, T. Iijima, H. Kawano & K. Nakamura

  2. Department of Pathology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan, , , , , , JP

    M. Sasaki & T. Ishida

Authors
  1. T. Ogata
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  2. S. Tanaka
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  3. T. Goto
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  4. T. Iijima
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  5. H. Kawano
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  6. M. Sasaki
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  7. T. Ishida
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  8. K. Nakamura
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Received: 28 May 1998

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Ogata, T., Tanaka, S., Goto, T. et al. Giant trichoblastoma mimicking malignancy. Arch Orth Traum Surg 119, 225–227 (1999). https://doi.org/10.1007/s004020050397

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  • DOI: https://doi.org/10.1007/s004020050397

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