A rare epithelial tumor of the rectum, arising from squamous cells in the rectal epithelium, without the presence of squamous-lined fistulous tracts in the rectum or a proximal extension of SCC of anal or gynecological origin. The reported symptoms are often nonspecific, such as anorexia, weight loss, lower abdominal pain, rectal bleeding and changes of bowel habits. [from
ORDO]