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At least 541 records · Page 30Linked to original sources
PubMed1998

Primary low-grade, B-cell, mucosa-associated lymphoid tissue lymphoma of the colorectum: clinical and colonoscopic features in six cases.

BACKGROUND: Unlike gastric lymphoma, the endoscopic features of low-grade, mucosa-associated lymphoid tissue (MALT) lymphoma of the colorectum have not been defined. METHODS: We analyzed colonoscopy, endoscopic ultrasonography, and histologic findings in six patients with MALT lymphoma restricted to the colorectum. Histologic confirmation of the proliferation of centrocyte-like cells with lymphoepithelial lesions formed the criteria for the selection of patients. RESULTS: Based on endoscopic findings, the patients were divided into cases of solitary (4 patients) or multifocal (2 patients) involvement. Endoscopic findings in cases of solitary involvement were uniform in that the lesions were either smooth or nodular protrusions, demonstrated by a hypoechoic mass under endoscopic ultrasonography. Multifocal involvement was endoscopically recognized as protrusions, dilated vasculature, or small ulcers. CONCLUSIONS: Protruding lesions are the main pattern of involvement in MALT lymphoma of the colorectum, although variable and multifocal involvement is also possible in this type of lymphoma.

Aged↗
PubMed1999

Ability of naloxone to enhance the colonoscopic appearance of normal colon vasculature and colon vascular ectasias.

BACKGROUND: Colon vascular ectasias are a common cause of lower intestinal bleeding among the elderly. The lesions may be difficult to diagnose at colonoscopy because they are small and their appearance may be influenced by the patient's blood pressure, blood volume, and narcotic sedation during the procedure. The purpose of this study was to determine whether naloxone influenced the appearance of colon vascular ectasias at colonoscopy. METHODS: One hundred forty-four patients older than 60 years undergoing complete colonoscopy participated in the study. Medications were given in the usual doses. After a 2-minute inspection of the cecum and ascending colon, naloxone was given, followed by another 2-minute observation period. Photographic documentation of areas of interest was obtained before and after administration of naloxone. RESULTS: One hundred fourteen patients (79%) had no ectasias before or after administration of naloxone. Fourteen (9.7%) initially had normal vessels, and the vessels became more prominent; 4 (2.7%) initially had no ectasias, but ectasias later developed. Four patients (2.7%) had ectasias before administration of naloxone that did not change; 8 (5.4%) had ectasias before administration of naloxone that increased in size (3 patients), number (7 patients), or both (2 patients). CONCLUSIONS: Naloxone can enhance the appearance of normal colonic vasculature and ectasias. Naloxone is an important adjunctive medication for patients undergoing examinations for lower intestinal bleeding.

Blood Vessels↗
PubMed1982

Colonoscopic diagnosis of inflammatory bowel disease.

The indications and limitations of colonoscopy in the diagnosis of inflammatory bowel disease are well defined. The endoscopic examination is usually easily performed and well tolerated by the patient, but, since endoscopic examination of the colon is an invasive procedure (and potentially dangerous), colonoscopy should only be performed in those patients in whom the indication is clear and the benefits identifiable. Colonoscopy may provide valuable information in the diagnosis and may help outline the course of therapy in patients with inflammatory bowel disease.

Barium Sulfate↗
PubMed1989

Colonoscopic management of polypoid lesions.

Virtually all colonic polyps may be removed endoscopically and with great safety provided the endoscopist is experienced with diagnostic colonoscopy as well as electrosurgical principles and hazards. Many polypoid protrusions will not require total removal or even sampling. Those lesions thought to need formal surgical management will require not only adequate tissue sampling but also accurate localization for the surgeon.

Colonic Neoplasms↗
PubMed1982

Colonoscopic diagnosis of minimal change colitis in patients with a normal sigmoidoscopy and normal air-contrast barium enema.

8 patients with normal sigmoidoscopic appearances and normal results by high-quality air contrast barium enema had substantial or total colitis diagnosed for the first time at colonoscopy performed within a month of the radiological examination. Colitis was confirmed in all 8 patients by histological examination of biopsy specimens. Barium enema radiographs were independently reviewed by three experienced observers who also reviewed other normal and abnormal radiographs. One observer regarded all 8 sets of radiographs from the patients with colitis as being of normal appearance, and 4 patients were reported as having normal radiographs by all three observers. All 7 of the rectal biopsy specimens taken showed histological features of inflammatory bowel disease. This emphasises the importance of performing a rectal biopsy in patients with gastrointestinal symptoms of unknown cause.

Adult↗