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Skeletal Radiol. 2019 Mar 13. doi: 10.1007/s00256-019-03198-w. [Epub ahead of print]

Myoepithelial carcinoma of tibia mimic giant cell tumor: a case report with emphasis on MR features.

Author information

1
Department of Medical Imaging, Chi Mei Medical Center, No. 901, Zhonghua Rd., Yongkang Dist., Tainan City, 710, Taiwan.
2
Department of Medical Imaging, Chi Mei Hospital, Liouying, Tainan, Taiwan.
3
Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan.
4
Departments of Pathology, Chi Mei Medical Center, Tainan, Taiwan.
5
National Institute of Cancer Research, National Health Research Institutes, Zhunan, Miaoli, Taiwan.
6
Department of Medical Imaging, Chi Mei Medical Center, No. 901, Zhonghua Rd., Yongkang Dist., Tainan City, 710, Taiwan. tsyhjyi.hsieh@gmail.com.

Abstract

Intraosseous myoepithelial carcinoma is an extremely rare type of bone tumor that most often presents in the long tubular bones, but also occurs in small tubular bones and the axial skeleton. We report the radiographic images and complete magnetic resonance (MR) features of a 44-year-old male with right knee pain of 7 months' duration. The radiographic findings and convention MR images indicated a giant cell tumor of the bone. The dynamic contrast-enhanced images showed a patent with the early wash-in and early wash-out usually noted in a giant cell tumor of the bone. Only water restriction on diffusion-weighted imaging (DWI) showed the malignant impression. Care should be taken when conventional images indicate giant cell tumor of the bone, as intraosseous myoepithelial carcinoma, although rare, can mimic this more common diagnosis. Further studies with DWI are warranted.

KEYWORDS:

Diffusion-weighted imaging; Intraosseous myoepithelial carcinoma; MRI

PMID:
30868231
DOI:
10.1007/s00256-019-03198-w

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