Gastrointestinal dissemination of mucosa-associated lymphoid tissue lymphoma: computed tomographic findings.
OBJECTIVE
To describe the computed tomographic findings of mucosa-associated lymphoid tissue (MALT) lymphoma with gastrointestinal (GI) tract dissemination.


METHODS
We retrospectively reviewed the computed tomographic findings for the location, morphology, contrast enhancement, and continuity of the involved bowel segment with ancillary findings in 10 patients with MALT lymphoma involving multiple GI tracts.


RESULTS
MALT lymphoma involved a total of 31 bowel segments. The gastric lesions appeared as segmental (n = 4) or diffuse (n = 1) wall thickening and the small- or large-intestinal lesions as circumferential wall thickening (n = 11) or localized polypoid mass (n = 8) with homogeneous and isoattenuating or hypoattenuating enhancement. Continuity of the involved bowel segment was present in 6 patients, bowel perforation in 1, lymphadenopathy in 8, and hepatosplenomegaly in 4.


CONCLUSIONS
Despite its rarity, MALT lymphoma can disseminate into the GI tract in the form of circumferential bowel wall thickening or localized polypoid mass with or without gastric involvement.
Kim
Hye Jin
HJ
Department of Radiology, College of Medicine, University of Ulsan, Seoul, Korea.
Ha
Hyun Kwon
HK
Kim
Hyun Jin
HJ
Byeon
Jeong-Sik
JS
Kim
Mi-Jung
MJ
Lee
Seung Soo
SS
Park
Seong Ho
SH
Kim
Ah Young
AY
D000328:Adult; D000368:Aged; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D018442:Lymphoma, B-Cell, Marginal Zone / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011857:Radiographic Image Interpretation, Computer-Assisted; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*