Clinical usefulness of endoscopic ultrasonography for the evaluation of ulcerative colitis-associated tumors.

Aim: To evaluate the clinical usefulness of endoscopic ultrasonography (EUS) for the diagnosis of the invasion depth of ulcerative colitis-associated tumors.

Methods: The study group comprised 13 patients with 16 ulcerative colitis (UC)-associated tumors for which the depth of invasion was preoperatively estimated by EUS. The lesions were then resected endoscopically or by surgical colectomy and were examined histopathologically.