Minimally invasive treatment of a bulging appendiceal orifice

A 60-year-old fecal occult blood test-positive patient was referred to our center to undergo colonoscopy. Two diminutive sessile polyps were detected, macroscopically compatible with sessile serrated lesions (SSL), which were resected using cold-snare polypectomy. Furthermore, a bulging appendiceal orifice was identified with mucoid appearance (Figure 1, left). Biopsies were taken and abdominal computed tomography (CT) was performed (Figure 1, right). What is the diagnosis and which treatment would you consider?