Endoscopical segmental piecemeal tumorectomy for nodular elevation of colorectal tumor: applicability and patient's quality of life.

N. Ariki, H. Iwagaki, T. Yoshino, Y. Nonaka, S. Fujiki, J. A. Perdomo, A. Hizuta, J. Tomoda, N. Tanaka, T. Tsuji