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Osseous oligometastases from thymic carcinoma: a case report suggesting the effectiveness of palliative-intent radiotherapy treatment

Authors Kashima J, Horio H, Okuma Y, Hosomi Y, Hishima T

Received 22 October 2015

Accepted for publication 29 December 2015

Published 29 February 2016 Volume 2016:9 Pages 1029—1032

DOI https://doi.org/10.2147/OTT.S98914

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Ram Prasad

Peer reviewer comments 3

Editor who approved publication: Professor Daniele Santini


Jumpei Kashima,1 Hirotoshi Horio,1 Yusuke Okuma,1,2 Yukio Hosomi,1 Tsunekazu Hishima3

1Department of Thoracic Oncology and Respiratory Medicine, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan; 2Division of Oncology, Research Center for Medical Sciences, Jikei University School of Medicine, Tokyo, Japan; 3Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan

Background:
Oligometastasis, a recently proposed concept, is defined as an intermediate state of cancer, between localized and systemic disease, that may be well controlled by local ablative treatment. Thymic carcinoma is a rare cancer with a poor prognosis. A definitive management approach has yet to be confirmed by a high level of evidence.
Case presentation: We present the case of a 41-year-old female who underwent curative-intent surgery for a stage III squamous cell carcinoma of the thymus. Bone metastases were detected 1 year later by magnetic resonance imaging. These were treated with palliative-intent radiotherapy. Disease progression has not been observed in more than 15 years since the achievement of complete radiological remission.
Conclusion: The treatment outcomes in this and other reported cases suggest that some patients with oligometastatic thymic carcinoma may achieve prolonged survival or even cure with low-dose radiotherapy delivered to the metastases.

Keywords: oligometastasis, thymic carcinoma, thymic epithelial tumor, bone metastasis

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