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Gastric Mucosa-Associated Lymphoid Tissue Lymphoma

Helical CT Findings and Pathologic Correlation

Dongil Choi1, Hyo K. Lim1, Soon Jin Lee1, Jae Hoon Lim1, Seung Hoon Kim1, Won Jae Lee1, Jun Haeng Lee2, Young-Ho Kim2, Poong-Lyul Rhee2, Jae J. Kim2 and Young Hyeh Ko3

1 Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50, Ilwon-Dong, Kangnam-Ku, Seoul 135-710, Korea.
2 Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.
3 Department of Diagnostic Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.



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  		Fig. 1A. —53-year-old woman with high-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Axial helical CT scan obtained through stomach shows diffuse and moderate wall thickening (arrows) of gastric body and antrum with minimal contrast enhancement.

 


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  		Fig. 1B. —53-year-old woman with high-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Photograph of resected specimen shows huge ulceroinfiltrative lesion (arrows) in antrum and body.

 


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  		Fig. 2. —52-year-old man with high-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Axial helical CT scan obtained through stomach shows segmental and mild wall thickening (arrows) in mid body of stomach with moderate contrast enhancement.

 


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  		Fig. 3. —42-year-old man with high-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Axial helical CT scan obtained through gastric body shows mass (arrows) with moderate contrast enhancement.

 


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  		Fig. 4A. —50-year-old man with low-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Axial helical CT scan obtained through stomach shows gastric wall of normal thickness.

 


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  		Fig. 4B. —50-year-old man with low-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Photograph of resected specimen shows shallow ulcer lesion (arrows) in lower body. Note associated mucosal nodularities (arrowheads) in antrum. At histopathology (not shown), low-grade MALT lymphoma was found in areas showing ulcer and mucosal nodularities. Lesion was not revealed on CT (not shown).

 


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  		Fig. 5. —64-year-old man with high-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Axial helical CT scan obtained through stomach shows segmental and moderate wall thickening (arrows) in gastric antrum. No normal mucosa is overlying lesion, and deep ulcer (arrowhead) is noted.

 


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  		Fig. 6A. —59-year-old man with low-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Axial helical CT scan obtained through stomach shows segmental and mild wall thickening (arrows) in low body and proximal antrum of stomach with minimal contrast enhancement. Overlying normal mucosa is absent, and shallow ulcer (arrowheads) is visible.

 


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  		Fig. 6B. —59-year-old man with low-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Photograph of resected specimen shows segmental depressed lesion (arrows) associated with deep ulcer (arrowheads) in antrum.

 


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  		Fig. 7. —67-year-old man with high-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Axial helical CT scan obtained through liver and gastric antrum shows two small low-attenuated lesions (arrows) in liver. Findings from sonographically guided percutaneous biopsy proved them to be involvement of lymphoma. Enlarged lymph node (arrowheads) is seen at portocaval area. Gastric lesion was found in body (not shown).

 

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