CPT® Code 45342

A flexible sigmoidoscopy is a diagnostic procedure that allows for the examination of the sigmoid colon and rectum using a flexible tube known as a sigmoidoscope. This procedure is enhanced by the use of transendoscopic ultrasound, which provides real-time imaging of the structures surrounding the rectum and sigmoid colon. During the procedure, the sigmoidoscope is inserted through the anus and advanced into the rectum and sigmoid colon, utilizing air insufflation to expand the colon and improve visibility of the mucosal lining. The physician carefully inspects the mucosa for any abnormalities, such as polyps or lesions. Following this initial examination, a radial scanning echoendoscope is introduced to perform ultrasound imaging, which allows for the assessment of adjacent structures, including the detection of enlarged lymph nodes and other lesions. This imaging helps determine the origin of any identified tumors and whether they have invaded surrounding tissues. The procedure also includes the use of a linear scanning echoendoscope to perform fine needle aspiration or biopsy of any suspicious lesions or lymph nodes, ensuring that adequate tissue samples are obtained for cytological evaluation. This combination of sigmoidoscopy and ultrasound-guided biopsy enhances diagnostic accuracy and aids in the management of colorectal conditions.