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The most obvious and noticeable symptom of rectal cancer is a malignant tumor (cancerous tumor that spreads) that forms in the tissues of the rectum. Rectal cancer can have the symptoms of unexplained weight loss in the absence of dieting, bowel obstruction, anemia, and fatigue. Hemorrhoids produce the symptom of pruritus (itching) in the rectal andor anal area while rectal cancers usually do not. Patients with hemorrhoids usually have a good prognosis and a normal life expectancy. coronal images are planned parallel to the anal canal (green box), especially in low-rectal tumors in order to accurately evaluate the depth of tumor invasion into the anal sphincter. The cranial border of the field of view (fov) is vertebral body l5, the caudal border is below the anal canal. Approximately 37 of anal lesions were diagnosed as stage iib or less versus 22 of anorectal and 26 of rectal lesions. The majority of tumors of anal, anorectal and rectal origin were advanced in thickness at diagnosis. However, anal melanoma tumors presented at a lesser median depth when compared with anorectal and rectal melanomas (p 0.). At first, most people assume the bleeding is caused by hemorrhoids (painful, swollen veins in the anus and rectum that may bleed). Rectal cancer is the development of abnormal rectal cells (cancer cells) that can form tumors and metastasize (spread) to other body sites. Hemorrhoids are enlarged and swollen blood vessels (sinusoids) located in the lower part of the rectum and the anus. Signs and symptoms that are common to both problems include rectal bleeding, blood in the stool, change in bowel habits (more gas, stool.). Radiation and chemotherapy are often given before or after surgery. The type of surgery used depends on the stage (extent) of the cancer, where it is, and the goal of the surgery. Tumor locationdistance from anal verge relationship to peritoneal reflection short axis oblique t2 t stage long. Desmoplastic response in t2 tumors versus extramural tumor (t3) desmoplastic response linear, spiculated,. Consensus statement from the society of abdominal radiology rectal and anal cancer disease-focused panel.