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ISSN: 2165-7920

Journal of Clinical Case Reports
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  • Case Report   
  • J Clin Case Rep 2018, Vol 8(2): 1082
  • DOI: 10.4172/2165-7920.10001082

The Size and Number is Not Everything to Evaluate the Tumor Response

Erdem Sen1*, Irem Oner1, Farise Yılmaz2 and Ozlem Ata1
1Department of Medical Oncology, Selcuk University, Konya, Turkey
2Department of Nuclear Medicine, Selcuk University, Konya, Turkey
*Corresponding Author : Erdem Sen, Department of Medical Oncology, Selcuk University, Konya, Turkey, Tel: +903322244085, Fax: +903322416065, Email: [email protected]

Received Date: Jan 18, 2018 / Accepted Date: Feb 25, 2018 / Published Date: Mar 05, 2018

Abstract

Gastrointestinal stromal tumors are the most common mesenchymal tumors of the gastrointestinal tract. Contrast-enhanced computed tomography is the most commonly used for evaluating response to treatment. Targeted therapies may cause some changes in tumor structure. Reduced lesion vascularity, cavitations, and intratumoral hemorrhage are some changes in patients after imatinib therapy, even without any size reduction. Paradoxically, a transient increase in size may be seen in some cases due to cystic change and intratumoral hemorrhage. Alternative tumor response criteria were developed by Choi et al. in gastrointestinal stromal tumor. They showed that not only the tumor size but also the tumor density are important in evaluating the response. In the present study, we report a 67-year old man who had been diagnosed with the gastrointestinal stromal tumor and treated with imatinib. After 3 months of imatinib treatment, liver lesions reported progression in response assessment.

Keywords:  Gastrointestinal stromal tumor; Imatinib; Choi criteria

Citation: Sen E, Oner I, Yilmaz F, Ata O (2018) The Size and Number is Not Everything to Evaluate the Tumor Response. J Clin Case Rep 8: 1082. Doi: 10.4172/2165-7920.10001082

Copyright: ©2018 Sen E, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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