Abdominal CAT scan
CAT scans are particularly used to study with clarity several organs in the abdominal regions of the body namely liver, spleen, pancreas and kidneys. Many causes of abdominal pain are diagnosed using specialized CT equipments for interpreting CT scans of the lower gastrointestinal (GI) tract, the colon and the rectum. Abscess in the abdomen, inflammation of the colon or colon cancer, diverticulitis and appendicitis are diagnosed. When severe pain is caused by an infection or inflammation, the speed, ease and accuracy of a CT examination can reduce the risk of serious complications caused by a burst appendix or an erupted diverticulum and the subsequent spread of the infection. Especially in cases of bowel obstruction, CT is the best imaging test recommended.
Colonoscopy
Colonoscopy allows the doctor to look into the interior lining of the large intestine. Through this procedure, the doctor is able to detect inflamed tissue, abnormal growths, polyps, tumors and ulcers. Early signs of cancer in the colon and the rectum can also be detected through colonoscopy. This procedure is also used to study unexplained changes in bowel habits, to evaluate symptoms of abdominal pain, rectal bleeding and sudden weight loss. The colonoscope is a thin flexible instrument whose length ranges from 48 inches to 72 inches. A small video camera is attached to the colonoscope so that photographic, electronic or videotaped images of the large intestine can be taken. Colonoscope is used to view the entire colon as well as a small portion of the lower small intestine.
The colon should be completely empty for colonoscopy to be thorough and safe. The liquid diet should be clear of any food colorings. It should be fat free. The colonoscope is gradually inserted into the rectum and slowly guided into the colon. The scope transmits an image of the inside of the colon onto a video screen so that the doctor can carefully examine the lining of the colon. The scope blows air into the colon and inflates it so that the doctor has a better view of the colon. During the procedure, the doctor is able to remove abnormal growths like polyp in the colon.
- Colonoscopy aids the doctor to remove most polyps without abdominal surgery.
- Colonoscopy is more accurate than a routine x ray to detect polyps, tumors, ulcers and cancers at early stage.
- Colonoscopy is done most often to investigate and find the cause of blood in the stool, abdominal pain and diarrhea.
- Certain patients with previous history of polyps or colon cancer, patients with family history of particular malignancies, colon problems are advised to have periodic colonoscopies because they are at greater risk of polyps or colon cancer.
Virtual colonoscopy: Here the technique that is adopted uses a CAT scan to construct virtual images of the colon. These images are similar to the views of the colon obtained by direct observation through colonoscopy. However, virtual colonoscopy cannot find small polyps which are less than 5 mm in size. These can be seen by the traditional colonoscopy. Virtual colonoscopy is not as accurate as colonoscopy in finding cancers or pre-malignant lesions that are not protruding. Virtual colonoscopy also cannot remove polyps.
Lead poisoning
Lead poisoning occurs when there is increased level of lead inside the body. Lead is toxic and can lead to many health problems such as headache, anemia, abdominal pain and irritability. Over time, lead poisoining can result in kidney failure, hypertension, learning difficulties, lethargy and behavioral problems. Children are at risk for lead poisoning when they are in contact with products containing lead. X-rays, blood count and CT or MRI of brain can help in identifying lead poisoning.
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