Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027627 (metastases)
 103,950 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A short survey is given on description and evaluation of progress and developmental trend of laparoscopy. Important technical improvements are the cold light via the glass fibre light conductor, optics of high value, the colour photography with electronic flash-light, colour films and colour television, new accessory instruments and belongings. Now as ever hepatomegaly and splenomegaly, jaundice, ascites, portal hypertension, suspicion of cirrhosis and metastases are regarded as main indications. The laparoscopy deserves a greater consideration in unclear abdominal symptoms, in gynaecological diseases, for the proof of the affection of liver and spleen in lymphogranulomatosis, sarcoidosis, tuberculosis (with aimed liver biopsy). The endoscopic retrograde cholangiopancreatography in the differential diagnosis of the jaundice competes with the laparoscopy, but it is not able to supersede it. The laparoscopic judgment of the pancreas and the importance of visible changes of the fine structed. Among the contraindications of the laparoscopy the hiatal hernia has lost its significance.
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PMID:[Laparoscopy--current aspects]. 13 32

The authors present a retrospective study of 110 patients operated for adenocarcinoma of the thyroid between 1950 and 1975, and submitted to standard postoperative radiotherapy. Clinical manifestations are poor and preoperative scintigraphy display a cold tumor in 80 percent of those performed. The preoperative cytodiagnosis confirms malignancy in 90 percent of cases approximately, thereby reducing the number of complementary reoperations. In the latter the rate of complications. Increases from 25 percent to 44 percent. Three are twice as many recurrent nerve palsies and parathyroid resections in total thyroidectomies as compared to subtotal. However after radical resection local recurrences and metastases are 4 times less frequent. Under combined radio-surgical treatment 82 percent of patients are alive with a mean survival time of 9.4 years; 9 percent have died of their disease after a mean 4.1 years and 9 percent have died of an unrelated condition an average 7.2 years after. The authors favor total or near-total, i.e. extracapsular homolateral and intracapsular controlateral, thyroidectomy for follicular and papillar adenocarcinomas alike, followed by local radiotherapy and destruction by 131 iodine (Acta chir. belg., 1977,76, 553-561).
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PMID:Surgery of differentiated thyroid adenocarcinomas. 59 89

Isotope examination of the liver depends on the functional activity of the liver phagocytes, while ultrasound and CT scanning display the anatomical structure. Cold areas on an isotope scan may be due to impaired function or space-occupying lesions. The method is nonspecific and does not differentiate between cysts, abscesses and metastases. Both ultrasound and CT scanning can differentiate space-occupying lesions with a high degree of accuracy so that both techniques can be used to improve the accuracy and specificity of the radioisotope examination. CT scanning of the liver is limited by relatively slow data acquisition and the small differences in X-ray absorption within soft tissues unless contrast agents are used. In comparison, ultrasonic data are rapidly collected and displayed and liver consistency is imaged without contrast media or ionizing radiation. Diffuse abnormalities of the liver, such as cirrhosis, cannot be detected by CT scanning but are apparent on ultrasound examination. In addition, equipment purchase and maintenance costs for ultrasound are a fraction of those for CT scanning. Experience to date at Yale indicates that ultrasound and CT scanning are complementary and supplementary to isotope examination of the liver but that ultrasound in most patients produces better resolution and enhanced tissue differentiation at considerably less cost.
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PMID:Scintigraphy, ultrasound and CT scanning of the liver. 60 55

201TI was used as an imaging agent in 173 malignant tumors and 76 benign lesions. The sensitivity, specificity, and accuracy were 0.64, 0.61, and 0.63, respectively. Sensitivity was good in thyroid cancer (0.91) and fair in primary lung cancer (0.70) and primary liver cancer (0.71). Compared with 67Ga, 201TI appears to have a higher sensitivity in thyroid cancer and nearly the same sensitivity in primary lung cancer. 201TI might be useful in distinguishing cold thyroid nodules and in differentiating primary liver cancer from metastases.
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PMID:Clinical evaluation of tumor imaging with 201 TI chloride. 70 67

The authors analyze the results from the carried out radioisotope investigations in preoperation and postoperation period of 42 patients with thyroid gland cancer. The test for 131J cumulation and thyreoscintigraphy were performed prior to operation. A part of the patients was stressed to reveal hyperthyroid function of the thyroid gland. The cases of cold nodules of the thyroid gland prevail on the scintigraphy. The test for 131J cumulation, thyreoscintigraphy, determination of the level of the proteinbound radioiodine in serum and Hamolski test were carried out as control investigations after the operation prior to percutaneous radiation and radioiodine therapy. Patients with hypothyroidism predominate in the first investigation. The cases with partial resection of thyroid gland prevail in scintigraphy, with cases of "white" scintigraphy and cases with normal scintigraphyic image of the gland. The proteinbound radioiodine in serum, besides the majority of the cases with normal values, in a part of the examined-shows etevated values. Homolski test in the majority of the patients is within the normal limits and the cases with elevated vales might be due to the specific changes in the capapcity-binding ability of thyroxinbinding glubin, but are always suspicious for metastases in function. The complex radioisotope investigation of the thyroid gland are basic methods for the early thyroid cancer diagnosis, for the determination of the therapeutic trends and prognosis of the patient and for the follow-up in dynamics the progress of the disease and the effect of the carried out treatment.
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PMID:[Radioisotopic studies in cancer of the thyroid gland]. 96 73

Anti-c-myc monoclonal antibody was used to evaluate the distribution of the c-myc protein in normal and tumor cells of infiltrating ductal carcinoma. A semi-quantitative method for reporting immunohistochemical assay results (c-myc score) that enables correlations on a more quantitative basis was used in this study. HL-60 cells demonstrated the strongest nuclear staining when fixed in cold acetone (4 degrees C) for 10 min. All 24 specimens of infiltrating ductal carcinomas of the breast and 7 of 11 samples of normal breast tissues studied revealed the presence of c-myc protein. The level of expression in normal breast tissue was much lower than that in breast cancer. Heterogeneity in expression was found within individual tumors and there were substantial differences in the level of expression among different tumors. The subcellular site of staining was predominantly nuclear, occasionally nuclear and cytoplasmic in the same cell, and rarely only cytoplasmic. All four patients with tumor cells located in close proximity to the ductal basement membrane and over-expressing c-myc protein had positive lymph nodes, suggesting that these tumors are more likely to metastasize.
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PMID:Heterogeneity of c-myc expression in histologically similar infiltrating ductal carcinomas of the breast. 130 31

From cumulative reported data the sensitivity of [131I]metaiodobenzylguanidine (131I-MIBG) scintigraphy of carcinoids appears to be greater than 60%; at our Institute 131I-MIBG scintigrams were positive in 51 of 70 patients with metastatic carcinoid. Twenty patients with symptomatic, metastatic disease have received 7.4 GBq doses of 131I-MIBG for palliation. Most of these patients had multiple large metastases showing no response to other therapies. No objective response (greater than 50% tumor volume reduction) was ever observed; however, 13 patients were relieved of symptoms, such as flushes, diarrhea, anorexia and pain. Palliation in some of these patients was meaningful and long lasting. Possible explanations for a palliative effect in the absence of objective remission are discussed. Treatment with escalating doses of stable MIBG (up to 80 mg) in 9 patients does not support the hypothesis that the palliation is due to a purely pharmacological effect. Palliation might be explained by the observation that carcinoid liver metastases may present both as hot and cold lesions; 131I-MIBG therapy will thus target exclusively at metabolically active metastases, which are responsible for the patient's symptoms.
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PMID:Role of [131I]metaiodobenzylguanidine therapy in carcinoids. 172 78

The epithelial membrane antigen (EMA) is expressed by the majority of colorectal cancers but has not previously been investigated as a target for radiation-labeled monoclonal antibodies (MoAb) in the imaging of patients with colorectal cancer. A rat IgG2a MoAb that recognizes EMA, ICR2, was labeled with Indium-111 (100 megabecquerel per milligram [MBq/mg]MoAb) using the bicyclic anhydride of the chelating agent diethylene triamine pentacetic acid (ccDTPA) and was administered intravenously to 22 patients known to have or thought to have colorectal cancer. Daily gamma camera imaging was performed for 3 days during the time between the administration of the radiation-labeled antibody and surgical procedure. At operation, the biopsies were done of the tumors and the normal colon, and the uptake of radiation-labeled MoAb was measured in a gamma well-counter. Immunocytochemistry for EMA expression also was done on resected tumors. Independent unblinded and blinded reporting was done on all scans. The sensitivity of 111In-ICR2 for detecting cancers preoperatively was 80% and 60%, respectively, on unblinded and blinded reporting, and the corresponding specificity 20% and 60%. The low unblinded specificity was attributable to a false-positive localization in severely dysplastic benign tumors (n = 2) and inflammatory tissue (n = 2). Liver metastases present in three patients were cold relative to normal liver. Lymph node metastases were localized in 1 of 6 patients preoperatively. The mean absolute uptake of 111In-ICR2 in tumor tissue was 7.75 +/- 3.77 x 10(-3) percent of injected dose per gram, and the ratio to normal colon was 2.10 +/- 0.92:1. On immunohistochemistry, EMA was expressed by 16 of the 17 primary cancers, both dysplastic adenomas, and all nodal metastatic deposits. EMA-negative tumors (1 cancer + 1 colonic lipoma) had negative antibody scans, and patients whose tumor was negative or only focally positive for EMA expression had lower tumor/normal colon ratios of radioactivity (1.30 +/- 0.26 versus 2.45 +/- 0.65, P = 0.005) on gamma well-counting of excised specimens. These results suggest a possible role for 111In-ICR2 in the detection of colorectal cancer and metastases but not its liver deposits.
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PMID:Preoperative imaging of colorectal cancers. Targeting the epithelial membrane antigen with a radiation-labeled monoclonal antibody. 173 Jan 14

Arterial chemoembolization of liver tumors should improve regional treatment by reducing native blood flow of the whole organ and redistributing residual flow toward hypovascular masses. Plasma cisplatin pharmacokinetics and its tissue uptake and relative tumor and liver vascularity were studied during surgical placement of arterial catheters in four patients and in four patients with colorectal metastases given intraoperative arterial cisplatin (DDP, 25 mg/m2), with an without coadministration of 600 mg degradable starch microspheres (DSM). Mean (+/- standard deviation) filterable plasma platinum levels peaked later (2 minutes) and were significantly lower after DDP with DSM (1.23 +/- 0.69 micrograms/ml) than after DDP alone (2.13 +/- 0.43 micrograms/ml, P less than 0.05), with the area under the curve (AUC0-30 min) values of 15.8 +/- 5.5 and 25.1 +/- 3.8 micrograms x min/ml (P less than 0.05), respectively. No differences in urine excretion, total body clearance, or plasma protein binding of platinum were observed. Tissue biopsies were started 15 minutes after DDP administration and completed in all cases within 5 minutes. Tumor platinum concentrations were significantly higher after DDP with DSM (3.03 +/- 1.60 micrograms/g) than after DDP alone (0.67 +/- 0.49 micrograms/ml, P less than 0.05). Liver concentrations and tumor-liver ratios of platinum also were higher, although not significantly, after DDP with DSM. Preoperative vascularization, studied with arterial perfusion scan, influenced individual tissue drug uptake in cases given DDP alone, with the lowest tumor levels in cold masses. Very high and almost superimposable liver and tumor concentrations were measured in those receiving DDP and DSM. The latter phenomenon was irrespective of native vascularization, indicating that DSM administration induced both an increased whole-liver extraction of the drug and a redistribution of blood flow and flow-dependent tissue uptake of platinum.
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PMID:Liver and tumor uptake and plasma pharmacokinetic of arterial cisplatin administered with and without starch microspheres in patients with liver metastases. 191 93

We describe a method to postlabel, in vivo, biotinylated monoclonal antibodies pretargeted onto tumor deposits when most of the non-tumor-bound antibodies have already been cleared as avidin-bound complexes. The application of this principle to tumor detection by immunoscintigraphy was tested in 20 patients with histologically documented cancer and increased circulating carcinoembryonic antigen levels. One mg of biotinylated anti-carcinoembryonic antigen monoclonal antibody (FO23C5) was administered i.v. (first step). After 3 days, 4-6 mg of cold avidin were injected i.v. (second step), followed 48 h later by 0.2-0.3 mg of a biotin derivative labeled with 111In (2-3 mCi) (third step). No evidence of toxicity was observed. Whole body radioactivity distribution was measured in five patients at various intervals postinjection by the conjugate counting technique. Tumors and metastases were detected in 18 of 19 patients (the remaining patient was a true negative) within 3 h after administration of 111In-biotin by planar or single photon emission tomography imaging. At the time of imaging, tumor/blood pool ratio was 5.5 +/- 3.2, and tumor/liver ratio was 6.7 +/- 3.9. Blood clearance of 111In-biotin was multiexponential, with the fast component having a t1/2 of 5 +/- 3 min. Urinary excretion of radioactivity over 3 h was 63.5 +/- 4.9% of the injected dose. Radioactivity at 3 h was 6.5 +/- 1.8% in blood, 1.6 +/- 0.3% in the kidney, and 2.4 +/- 0.6% in the liver. This approach represents an improvement in immunoscintigraphic techniques for tumor localization. The potential use for radioimmunotherapy is discussed.
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PMID:Three-step monoclonal antibody tumor targeting in carcinoembryonic antigen-positive patients. 193 60


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