Transanal techniques for rectal cancer such as TEMS, TAMIS, TEO etc for Sphincter preservation: Local excision (LE) of benign and early malignant rectal lesions was traditionally described to remove lesions within 8 cm from the anal verge. Higher lesions in the rectum rendered amenable for local excision using Transanal Endoscopic Microsurgery system. It became more attractive for many reasons; such as better functional outcomes, less morbidity, faster recovery and avoidance of radical resections.
Transanal Minimally Invasive Surgery (TAMIS) has revolutionized local excision of mid and high rectal lesions; benign or malignant (cancerous). This hybrid tool between single-port laparoscopy and Transanal Endoscopic Microsurgery (TEM), wherein the procedure is done through the natural anal opening without any external scars and excellent recovery with minimal pain has gained wider acceptance and popularity, due to its superior surgical outcomes, shallow learning curve, and low cost, in addition to easier setup and more flexibility during the procedure.