Prognostic impact of the width of subserosal invasion in gastric cancer invading the subserosal layer

Our findings showed that narrow-width ss-cancer (<20 mm) behaved very similar to mp-cancers, while wide ss-cancers (≥20 mm) behaved very similar to se-cancers. These findings demonstrated the prognostic impact of the width of cancer invasion in subserosal layer in patients with ss-cancer. Intensive chemotherapy and close follow-up should be recommended for ss-cancer patients with greater than 20 mm involvement of the subserosal layer.