Primary rectal mucosa-associated lymphoid tissue lymphoma treated with only endoscopic submucosal dissection: A case report

Table 1 Summary of reported cases of primary colorectal mucosa-associated lymphoid tissue lymphomas treated with endoscopic resection alone

Patient No.	Ref.	Age (yr)/Sex	Symptoms (duration)	Location	Size (cm)	Endoscopic findings	Treatment	Follow up period (mo)	Outcome
1	Lin et al[10], 2016	59/M	Positive fecal occult blood test	Colon (25 cm from anal verge)	2.0	Polypoid lesion with wide base, slightly irregular border, and an irregular vascular pattern with mild inflammatory changes	EMR	36	No recurrence
2	Shah et al[11], 2021	72/M	Asymptomatic	Mid rectum	2.0	Raised erythematous lesion	EMR	60	No recurrence
3	Yoon et al[12],2021	69/F	Weight loss (3 mo)	Lower rectum	1.0	Subepithelial tumor	EMR with ligation	37	No recurrence
4	Tao et al[13],2022	46/M	Asymptomatic	Rectum (10 cm from anal verge)	3.5	Laterally spreading tumor-like lesion	ESD	24	No recurrence
5	Li et al[14], 2022	71/F	Hematochezia (1 mo)	Lower rectum	6.0	Hemispheric mass with rough and hyperemic mucosa	Endoscopic full-thickness resection	12	No recurrence
6	Present case	68/F	Asymptomatic	Lower rectum	0.5, 0.3	Two subepithelial tumors with superficial capillary bed	ESD	12	No recurrence

MALT: Mucosa-associated lymphoid tissue; EMR: Endoscopic mucosal resection; ESD: Endoscopic submucosal dissection.