The Coexistence of Colorectal Polyps in the Right Colon Increases the Malignant Risk of Laterally Spreading Tumors

Figure 1

Four subtypes of LSTs with or without polyps. (a) A granular homogeneous LST (LST-G-H). (b) A granular, nodular, and mixed LST (LST-G-M). (c) A nongranular, flat, and elevated LST (LST-NG-F). (d) A nongranular, pseudodepressed LST (LST-NG-PD). (e) A LST-G-H with a polyp. (f) A LST-G-M with a polyp. (g) A LST-NG-F with a polyp. (h) A LST-NG-PD with a polyp.

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