Primary mucosal-associated lymphoid tissue extranodal marginal zone lymphoma of the bladder from an imaging perspective: A case report

Table 1 Imaging findings of the patients with primary bladder mucosal-associated lymphoid tissue extranodal marginal zone lymphoma ever reported (including the present case)

No.	Ref.	Solitary /multiple	Size (cm)	Location	Signs of ureteral obstruction	Imaging findings			Follow-up imaging methods
						US	CT	MRI
1	Tasu et al[14]	Solitary	NA	Right lateral wall	No	Soft tissue mass	Soft tissue mass	No	NA
2	Tasu et al[14]	NA	NA	Entire wall	Yes	Circumferential thickening of the bladder wall	Circumferential thickening of the bladder wall	No	CT
3	Tasu et al[14]	Solitary	NA	Left wall	No	An isolated mass with local thickened bladder wall	An isolated mass with local thickened bladder wall	No	NA
4	Maninderpal et al[15]	Solitary	11.2	Trigone of the bladder	Yes	A hypoechoic soft tissue mass with local thickened bladder wall	A homogeneously enhancing mass with local thickened bladder wall	Homogeneously enhancing mass with hypointensity in T1WI, intermediate intense intensity in T2WI, and hyperintensity in STIR	CT
5	Szopiński et al[11]	Solitary	3.6	Posterior wall	No	Hypoechoic mass	No	No	US, CT
6	Morita et al[23]	Solitary	NA	NA	NA	No	Soft tissue mass with local thickened bladder wall	No	NA
7	Bacalja et al[24]	Solitary	8.5	Right posterolateral wall	No	Soft tissue mass	Expansive lesion of the bladder wall	No	CT, PET-CT
8	Matsuda et al[4]	Solitary	NA	Anterior to right side wall	Yes	No	Soft tissue mass with local thickened bladder wall	Soft tissue mass with local thickened bladder wall	US
9	Simpson et al[25]	Solitary	6.3	Anterior lateral	Yes	No	Soft tissue mass	No	PET-CT
10	Hsu et al[18]	NA	NA	Right wall	Yes	No	Eccentric thickened bladder wall	No	NA
11	Kadam et al[26]	Solitary	3.4	Posterior wall	NA	No	Soft tissue mass	No	NA
12	Xu et al[8]	Multiple	NA	NA	NA	Roughness in the inner bladder wall	Soft tissue mass	No	CT, PET-CT
13	Present case	Multiple	12.8	Posterior wall	Yes	A mass had a homogeneous hypoecho with fine linear echogenic strands distributed inside	Continuous enhancing mass with thickened wall	No	US

NA: Not available; US: Ultrasonography; CT: Computed tomography; MRI: Magnetic resonance imaging; T1WI: T1-weighted imaging; T2WI: T2-weighted imaging; STIR: Short tau inversion-recovery; PET-CT: Positron emission tomography/computed tomography.