Multiple primary cancers with gastrointestinal malignant tumors as the first manifestation: Three case reports and review of literature

Table 1 Summary of cases with multiple primary cancer reported in literature recently

Ref.	Age/sex	Tumors reported
Shibata et al[3]	60/M	Carcinoma of the esophagus/myocardial metastasis
Jena and Nundy[4]	77/M	Esophagus/rectosigmoid/central nervous system
Chen et al[5]	51/M	Pelvis/bladder/colon
Zhang et al[6]	49/W	Colorectal carcinoma/endometrial carcinoma
Liu et al[7]	65/M	Rectal cancer/pelvic classical hodgkin lymphoma
Kang et al[8]	65/M	Esophagus/rectal metastasis