Endoscopic phenotype of four representative sessile serrated polyps/adenomas (SSA/Ps) located in the ascending colon of patients with the serrated polyposis syndrome.

<p><b>Panel A</b>. Large 15 mm diameter SSA/P with a mucus cap. <b>Panel B</b>. 20 mm diameter SSA/P. <b>Panel</b> C. 10 mm diameter SSA/P. <b>Panel D</b>. Small 4 mm diameter SSA/P. The size of polyps was estimated using biopsy forceps as a reference. Histopathology analyses were consistent with SSA/Ps (M. Bronner).</p>