Case Report
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World J Gastroenterol. Aug 7, 2014; 20(29): 10202-10207
Published online Aug 7, 2014. doi: 10.3748/wjg.v20.i29.10202
Imaging findings of primary gastric plasmacytoma: A case report
Zhen-Hua Zhao, Jian-Feng Yang, Jin-Dao Wang, Jian-Guo Wei, Fang Liu, Bo-Yin Wang
Zhen-Hua Zhao, Jian-Feng Yang, Bo-Yin Wang, Department of Radiology, Shaoxing People’s Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing 312000, Zhejiang Province, China
Jin-Dao Wang, Department of Gastroenterology, Shaoxing People’s Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing 312000, Zhejiang Province, China
Jian-Guo Wei, Fang Liu, Department of Pathology, Shaoxing People’s Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing 312000, Zhejiang Province, China
Author contributions: Wang BY contributed to the conception and design; Zhao ZH, Yang JF, Wang JD, Wei JG and Liu F contributed to the acquisition of data or analysis and interpretation of data; Yang JF drafted the article and revised it critically for important intellectual content; Wang BY approved the final version to be published; Zhao ZH and Yang JF contributed equally to this study.
Supported by The Research Projects of Public Technology Application of Science and Technology of Shaoxing City, No. 2013B70080
Correspondence to: Bo-Yin Wang, MD, Professor, Department of Radiology, Shaoxing People’s Hospital, Shaoxing Hospital of Zhejiang University, 568 Zhongxing North Rd, Shaoxing 312000, Zhejiang Province, China. wangboyin@163.com
Telephone: +86-575-88228556 Fax: +86-575-88228558
Received: January 12, 2014
Revised: March 18, 2014
Accepted: April 21, 2014
Published online: August 7, 2014
Processing time: 206 Days and 13.1 Hours
Abstract

Primary gastric plasmacytoma (GP) is a rare extramedullary plasmacytoma with clinical and imaging features that are common among other gastric tumors, such as gastric adenocarcinomas, gastric stromal tumors, and lymphomas. Here, we present a histologically confirmed case of primary GP examined with biphasic computed tomography (CT), magnetic resonance imaging (MRI), and endosonography. A well-circumscribed extraluminal mass appearing as homogeneous attenuation/intensity with gradual enhancement was identified on biphasic enhancement CT and MRI. This mass was hyperintense on diffusion-weighted imaging and hypointense on the apparent diffusion coefficient map, implying that water diffusion in the mass was restricted. In addition, endosonography indicated a low echogenic mass in the gastric wall. These imaging findings increase the available knowledge about imaging of this disease and provide valuable information for differentiating primary GP from common gastric tumors.

Keywords: Stomach; Plasmacytoma; Computed tomography, X-ray; Magnetic resonance imaging; Diffusion; Endosonography

Core tip: Current knowledge regarding the imaging of primary gastric plasmacytoma is limited. Here, we report findings from biphasic enhancement computed tomography, magnetic resonance imaging, and endosonography for this disease, thereby increasing imaging knowledge about primary gastric plasmacytoma and providing useful information for differentiating these tumors from common gastric tumors.