Table 49 Disease Characteristics of Rectocolon Cancer Cases Sample Characteristic N = 166a n = 156b n = 142c n = 6d Histology Epidermoid 5 5 5 0 Adenocarcinoma 152 151 151 6 Unknown 9 0 4 0 Stage In situ 1 1 1 0 Local 27 26 25 1 Regional, direct extension 17 17 16 1 Regional, nodes 25 25 23 1 Regional, NOS 0 0 0 0 Non-local 0 0 0 0 Distant 66 64 56 3 Unstaged 6 0 0 1 a Original sample. b Cases with missing values for stage and histology excluded. c Cases with missing values for stage and log survival excluded. RectocoloG cancer patients interviewed for psychosocial analysis. NOS: not other- wise specified.