| superior vena cava obstruction | <cardiology, oncology> Blockage or narrowing of the superior vena cava, the major vein draining the upper body. May result from lymphoma, liver tumours, tuberculosis, histoplasmosis and aortic aneurysm. (19 Jan 1998) |
|---|---|
| duodenal narrowing or obstruction | <radiology> Congenital (see double bubble sign), duodenal atresia: neonatal presentation, annular pancreas: infants or adults, duodenal web/diaphragm, Ladd's bands, duplication cyst, inflammatory, postbulbar ulcer, Crohn disease, infections: TB, Strongyloides, pancreatitis, pancreatic pseudocyst, radiation injury, malignant, duodenal adenocarcinoma/lymphoma, pancreatic carcinoma, metastatic disease, traumatic, intramural haematoma, vascular, superior mesenteric artery syndrome (12 Dec 1998) |
| intestinal obstruction | <surgery> A blockage of the bowel lumen prohibiting the passage of material. Common symptoms include constipation, abdominal swelling and abdominal pain. Treatment includes intravenous fluids, rest, nasogastric suction and surgery in select cases. (27 Sep 1997) |
| intestinal pseudo-obstruction | <radiology> Chronic idiopathic intestinal pseudo-obstruction, autosomal dominant, variable penetrance, insidious onset in child or young adult, intermittent episodes, dysphagia, vomiting, abdominal pain/distention, diarrhoea, constipationn, small bowel involvement most common, megaduodenum, ileus simulating obstruction (12 Dec 1998) |
| obstruction | 1. The act of blocking or clogging. 2. The state or condition of being clogged. Origin: L. Obstructio (18 Nov 1997) |
| ureteropelvic junction obstruction | <urology> A blockage of a ureter in the region where the ureter enters the anatomic pelvis (close to the bladder). This is caused most often by a kidney stone but can also be caused by external (or internal) compression from a tumour. (27 Sep 1997) |
| ureteropelvic obstruction | A blocking or stenosis, usually congenital, at the junction of the renal pelvis and ureter, usually resulting in stasis, pelvocaliectasis, hydronephrosis, or calyceal clubbing. (05 Mar 2000) |
| ureterovesical obstruction | Obstruction of the lower ureter at its entrance into the bladder. (05 Mar 2000) |
| urethral obstruction | Obstruction anywhere along the urethra. (12 Dec 1998) |
| lacrimal duct obstruction | Interference with the secretion of tears by the lacrimal glands. Obstruction of the lacrimal sac or nasolacrimal duct causing acute or chronic inflammation of the lacrimal sac (dacryocystitis). It is caused also in infants by failure of the nasolacrimal duct to open into the inferior meatus and occurs about the third week of life. In adults occlusion may occur spontaneously or after injury or nasal disease. (12 Dec 1998) |
| adenomatous colon polyps | <radiology> Probability of malignancy by size and type Size (cm) less than 1 1-2 greater than 2 --------------------------- tubular 1% 10% 34% mixed (TV) 4% 9% 45% villous 10% 10% 54%, most colon polyps (90%) are hyperplastic (size less than 5 mm) (12 Dec 1998) |
| arterial arches of colon | Anastomosing branches of the colic arteries that form arch's in the mesocolon from which the walls of the colon are supplied. See: marginal artery of colon. (05 Mar 2000) |
| ascending colon | <anatomy> The first part of the colon (large intestine) that starts in the right lower quadrant of the abdomen and ends at the transverse colon in the right upper quadrant of the abdomen. (27 Sep 1997) |
| bands of colon | teniae coli |
| cancer, colon | A malignant tumour arising from the inner wall of the large intestine. The third leading cause of cancer in males, fourth in females in the U.S. Risk factors for cancer of the colon and rectum (colorectal cancer) include heredity, colon polyps, and long standing ulcerative colitis. most colorectal cancers develop from polyps. Removal of colon polyps can prevent colorectal cancer. Colon polyps and early cancer can have no symptoms. Therefore, regular screening is important. Diagnosis can be made by barium enema or by colonoscopy with biopsy confirmation of cancer tissue. Surgery is the most common treatment for colorectal cancer. (12 Dec 1998) |