Endoscopic diagnosis and treatment of a patient with synchronous rectal neuroendocrine tumors (a case report)

Abstract

In this article, we describe the procedure of comprehensive endoscopic diagnostics and treatment of a patient with synchronous rectal neuroendocrine tumors. The patient underwent screening colonoscopy at the age of 44; a year before, he had an immunochromatographic fecal occult blood test, which was negative. At the first stage, we performed narrow band imaging with optical magnification, chromoscopy using indigo carmine dye, and endosonography with a 12 MHz transducer. Then the patient underwent radical endoscopic mucosal resection with submucosal dissection. Immunohistochemical examination of surgical specimens demonstrated that both tumors were well differentiated (G1 ). The patient was followed up during a year and had no signs of recurrence.

Keywords

• synchronous cancer
• rectal neuroendocrine tumor
• comprehensive endoscopic diagnostics
• endoscopic mucosal resection with submucosal dissection