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PubMed1980

[Simultaneous and independent multifocal neoplasms of the large intestine].

The Authors report the presence of two simultaneous neoplasms of the large bowel which are independent of each other from the histological point of view. The Authors point out the more interesting aspects of this particular neoplastic pathology, which creates different clinical syndromes; diagnosis and therapeutic possibilities were investigated. The frequency of these neoplasms is not exceptional, and, therefore, the possible existence even in subjects having a single tumor of the colon or rectum should not be neglected.

Adenocarcinoma↗
PubMed1990

[The hormonal sensitivity of a transplantable adenocarcinoma of the large intestine].

It was found that repeated transplantation of ACATOL strain cells resulted in a loss of their sensitivity to growth-stimulating effect of pentagastrin. The effect of gastrin receptor antagonist proglumide, on ACATOL cells growth was inconstant. ACATOL tumor was sensitive to VIP and glucagon in vitro (as shown by adenylate cyclase activity assay), that makes the model promising for selecting potent hormone drugs against colorectal cancer.

Adenocarcinoma↗
PubMed1983

Surgical therapy for small-bowel carcinoid tumors.

Eighty-two symptomatic patients with carcinoid tumors of the small intestine were examined and treated over a 20-year period. Common clinical features included weight loss, diarrhea, and symptoms of intermittent bowel obstruction; 25 patients (30%) exhibited the carcinoid syndrome. Multiple carcinoid tumors occurred in 23 patients (28%), and hepatic metastases were present in 30 (37%). All patients underwent operation. The overall mortality was 7%, and the cumulative five-year survival rate was 59%. Two factors influenced prognosis after operation: hepatic metastases and incomplete resection. Other variables, including the sex and age of the patient and the size of the primary tumor, were of no additional prognostic value. Wide resection of the tumor, including regional lymph nodes, is indicated, regardless of the size of the primary tumor.

Adolescent↗
PubMed1996

Over-expression of a novel member of the immunoglobulin superfamily in Min mouse intestinal adenomas.

Germline mutations of the APC (adenomatous polyposis coli) gene lead to multiple intestinal tumors in familial adenomatous polyposis patients and in Min (multiple intestinal neoplasia) mice. Consequently, these mice provide an excellent model for familial colon cancer. We have identified an Mr approx. 66 kDa glycoprotein which is preferentially expressed at the cell surface of cell lines established from chemically induced rat colon carcinomas. Cloning of the corresponding Tage4 cDNA has revealed that this protein contains the conserved amino acids characteristic of members of the immunoglobulin gene superfamily. Here, we analyze expression of the mouse Tage4 gene in Min mouse intestinal adenomas. RT-PCR analysis allowed us to detect expression of this gene in all the mouse adenomas tested. In contrast, lower levels of Tage4 mRNA were found in the intestinal tract and barely detectable levels in other tissues of normal mice. Furthermore, Tage4 mRNA was detected in a series of mouse intestinal adenomas by in situ hybridization. A strong signal was seen in the samples analyzed.

Adenoma↗
PubMed1980

The National Large Bowel Cancer Project: a progress report.

The progress report from the National Large Bowel Cancer Project updates the state of the art of investigations concerning causes, role of animal models, early diagnosis of disease including potential biochemical markers, genetic and pharmacological consideration, proventive measures, and new approaches to the treatment of large bowel cancer. It points out the many interrelations in the multidisciplinary approaches to understanding the mechanisms of disease, means of prevention, methods of earlier diagnosis, and development of rational approaches in the control of large bowel cancer.

Animals↗
PubMed1984

Chemotherapy for primary adenocarcinoma of the small bowel.

The results of chemotherapy for patients with advanced adenocarcinoma of the small bowel treated at U. T. M. D. Anderson Hospital between 1950 and 1980 were analyzed. A total of 21 single-agent and multidrug chemotherapy regimens were given to 14 patients. 5-Fluorouracil, Adriamycin, mitomycin C, and nitrosourea compounds were the most commonly used chemotherapeutic agents. Fluoropyrimidines, used alone or in combination with the other agents mentioned above, resulted in objective tumor regression in 3 patients (1 partial and 2 minor responses); while 9 additional patients had stable disease. The partial response (PR) was obtained with ftorafur in a patient with supraclavicular lymphadenopathy and hepatic metastasis. Median duration of survival for patients treated with chemotherapy was 9 months. Results of this study show that adenocarcinoma of the small bowel appears to be somewhat less responsive to chemotherapeutic agents than adenocarcinoma arising in the stomach, as reported in the literature. Systematic evaluations of the efficacy of new antitumor agents is indicated to improve results of treatment for advanced small bowel adenocarcinomas.

Adenocarcinoma↗
PubMed1983

Clinically significant intestinal metastasis from a primary bronchogenic carcinoma.

Although abdominal metastasis from lung cancer are not unusual postmortem findings, they are rarely of clinical significance. Our patient's clinical course was complicated by intestinal obstruction secondary to metastatic lung cancer. With the current epidemic of lung cancer, we can expect more patients with abdominal complaints secondary to metastatic disease. In these patients, survival time averaged less than 60 days.

Carcinoma, Bronchogenic↗
PubMed1992

Bowel perforation due to metastatic lung cancer.

Lung cancer infrequently metastasizes to the bowel. When this occurs, the symptoms may vary from mild to emergent in nature. Three patients are presented illustrating the life threatening complications that may occur due to bowel metastases of lung carcinoma. A review of the literature reveals that only four of 24 reported patients have survived bowel perforation due to metastatic lung carcinoma. One of the three patients presented herein survived to be discharged home. Patients with known lung carcinoma who develop abdominal complaints should be investigated aggressively to prevent life-threatening complications by early intervention.

Adenocarcinoma↗
PubMed1992

Risk factors for small bowel cancer in Crohn's disease.

Suspected risk factors for adenocarcinoma of the small bowel in Crohn's disease include surgically excluded small bowel loops, chronic fistulous disease, and male sex. Review of all seven University of Chicago cases failed to confirm any suspected risk factor. A case-control study was performed to identify possible alternatives. Each case was matched to four randomly selected controls from an inflammatory bowel disease registry matched for year of birth, sex, and confirmed small bowel Crohn's disease. Three factors were significantly associated with the development of cancer: (1) Four cancers developed in the jejunum, and jejunal Crohn's disease was associated with the development of cancer [odds ratio (OR) 8.0, 95% confidence interval (CI) 1.6-39.3]. (2) There was an association between the development of cancer and occupations known to be associated with an increased colorectal cancer risk (OR 20.3, CI 2.7-150.5). Three cases (a chemist with exposure to halogenated aromatic compounds and aliphatic amines, a pipefitter with exposure to asbestos, and a machinist with exposures to cutting oils, solvents, and abrasives) and one of 28 controls (a fireman with multiple hazardous exposures) had an occupational risk factor. (3) Among medications taken for at least six months, only 6-mercaptopurine use was associated with cancer (OR 10.8, CI 1.1-108.7). In conclusion, proximal small bowel disease, 6-mercaptopurine use, and hazardous occupations are associated with cancer of the small bowel in patients with Crohn's disease and can be added to the list of suspected risk factors.

Adenocarcinoma↗
PubMed1979

Selective mesenteric phlebography in patients with carcinoid tumors.

Seventeen patients were investigated to localize carcinoid tumor growth in the small intestine and liver. Portography, selective phlebography of the intestinal veins, arteriography, and hormone assay (Serotonin, substance P) after simultaneous catheterization of the celiac artery and portal and caval veins were performed. Most of the patients have been operated on and findings at surgery have been compared with the preoperative localization methods. In 3 cases with small bowel carcinoids and typical fibroplastic changes of the mesentery, phlebography as well as arteriography demonstrated well the degree of mesenteric involvement. None of the methods demonstrated the primary tumors. Arteriography was superior in demonstration of liver metastasis. The hormone assay was a useful complement to angiographic techniques in the diagnosis and localization of tumor growth.

Adult↗