The prognosis of colorectal cancer

By | May 4, 2012

The prognosis of colorectal cancer, (a) diagnosis of rectal cancer recurrence Imageology
Five-year survival rate after rectal cancer surgery up to 50%. Although surgical treatment has made significant progress, but with advanced rectal cancer recurrence after surgery was still high. Cancer treatment typically relapse within two years, and the majority of local recurrence, so rectal cancer six months. 2 years pelvic CT scan should be regularly can help detect early metastasis. CT scan can observe whether the pelvic recurrence and distant metastasis, recurrence is confined to the rectum or has infiltrated adjacent organs. To identify the changes and recurrence after surgery, immediately after surgery for a scan information for future comparison.
Cancer recurrence mainly for sacrococcygeal prevertebral soft tissue mass, can be spherical or irregular in shape, be with and without contrast agent filling the small intestine song. other normal organs such as the seminal vesicles or uterus, and the change in identification after the operation. Just full of non-surgical operating table after a certain shape soft tissue, normal fascia covering surface, such a change a few months to disappear, leaving a small fibrous cord-like shadows, so after a few months in operation, the operating table spherical mass was found to be thought of local recurrence. In the CT scan can not identify a cause of tumor recurrence after suppression of scar, granulation tissue, it would be mainly as CT guided needle biopsy to obtain histological diagnosis. CT can understand the recurrence of tumor size, scope, design juice radiation field of radiation therapy is helpful. Recurrent tumors in the sacrococcygeal bone can be down before the expansion of the prostate, seminal vesicles, and forward to the bladder wall infiltration can also be caused by invading the distal ureter hydronephrosis can be invaded and the pelvic wall and the sacrum, and pelvis can also be found mesenteric lymph node metastases.
The prognosis of colorectal cancer (b) postoperative X-ray examination of colon cancer
Because colon cancer local recurrence after surgery is easy, and mostly occurs in 2 to 3 years, so check regularly for early diagnosis of postoperative tumor recurrence is significant. ,3-4 the first 3 months of investigation time, 3 years after the check once every six months, anastomotic recurrence showed anastomotic stenosis and filling defect occurs, irregular narrowing lumen near the anastomosis (Figure 5-4-21), Edge is not the whole wall. Identification with the anastomotic stricture point scar: scar-free soft tissue mass in the narrow, no filling defect, stricture adjacent bowel contour finishing.
Colon cancer metastasis to the liver the most common (68%), followed by lung (28%) and brain, bone _10%). CT scan of colorectal liver metastases to more than one category showed a round low density lesion, edge blur, after injection of contrast medium slightly enhanced. Occasionally manifested as round, clear edge of the lesion density approximation of water, often misdiagnosed as benign lesions. Very small number of primary tumors with liver metastases as manifestations of the lesions.
The prognosis of colorectal cancer, CT scan can be found in the abdominal and pelvic lymph node metastasis, more than 10mm or more lymph nodes clustered less than 10mm should be considered when lymph node metastasis.

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