Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0019204 (hepatocellular carcinoma)
 71,386 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Gastrointestinal cancer has proved exceedingly resistant to chemotherapy efforts. 5-Fluorouracil (5-FU) accepted as standard treatment, has provided only infrequent and incomplete antitumor effects. Other drugs as the nitrosoureas BCNU and CCNU or Mitomycin C do not match the effectiveness of 5-FU. Improvement in frequency of tumor regression have been recorded for gastric carcinoma with combinations of 5-FU and BCNU and 5-FU, adriamycin and Mitomycin C and for colorectal carcinoma with combination of 5-FU, methyl-CCNU and vincristine. There are also suggestions that such combination chemotherapy may produce increased survival when compared to untreated patients. The combination of 5-FU and streptozotocin in carcinoid tumors or adriamycin in primary hepatoma may be of some effectiveness.
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PMID:[Chemotherapy of gastrointestinal cancer (author's transl)]. 15 93

Hepatic artery ligation is useful as a palliation of irressectable hepatic tumors, but does not always produce a satisfactory result. Hepatic tumor with high vascularity is expected to respond more favorably. In this context, primary liver cell carcinoma and carcinoid tumor or leiomyosarcoma of the liver have been satistfactorily treated by hepatic artery ligation. A case is presented of hemangiosarcoma of theliver and spleen treated effectively by hepatic artery ligation, splenectomy, and postoperative intraportal infusion of 5-fluorouracil, as indicated by the regression of hepatic tumors on postoperative scanning and arteriograpms.
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PMID:Hemangiosarcoma of liver and spleen treated by hepatic artery ligation, intraportal infusion chemotherapy, and splenectomy. 98 37

We collected 20 primary liver malignant tumors other than hepatocellular carcinoma from 1968 to 1990; sarcomas from mesenchymal tissue (hepatic leiomyosarcoma, hepatic fibrosarcoma, Kupffer cell sarcoma, hepatic lymphatic sarcoma), two subtypes of hepatocellular carcinoma (fibrolamellar carcinoma and clear cell carcinoma), hepatic carcinoid, squamous carcinoma, etc. Analysis with review of literature is given.
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PMID:[20 rare primary hepatic malignant tumors]. 139 62

A minute carcinoid tumor of the gallbladder is reported. The tumor was incidentally identified in a 77-year-old Japanese man with cholecystolithiasis, hepatocellular carcinoma and sigmoid colon carcinoma. The tumor formed a 5-mm-sized sessile polyp at the neck of the gallbladder. The tumor cells, which were argyrophilic and non-argentaffinic, belonged to the foregut-type. Immunohistochemically, they were positive for neuron-specific enolase (NSE) and somatostatin.
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PMID:Minute carcinoid tumor of the gallbladder. 167 42

To evaluate the role of carcinoembryonic antigen (CEA) in solving problems of tumor histogenesis in surgical pathology, monoclonal antibodies to four distinct epitopes of CEA (E-Z-EM) were applied to paraffin sections of 303 epithelial neoplasms from multiple sites. Two epitopes were CEA specific (D14 and B7.1), one was shared with nonspecific cross-reacting antigen (NCA) (B7.8), and the fourth (B18) was common to CEA, NCA, and biliary glycoprotein antigen (BGP). A sample of the tumors (n = 110) was also stained with a polyclonal anti-CEA (DAKO). Gastrointestinal adenocarcinomas, including esophageal and gastric (n = 19), small intestinal (n = 8), colorectal (n = 56), biliary tract (n = 8), and pancreatic adenocarcinomas (n = 14), were consistently positive with all five antibodies. Other predominantly gland-forming carcinomas tested, comprising lung (n = 22), ovary (n = 18), and endometrium (n = 12), were either invariably negative with all five antibodies (endometrial adenocarcinoma, non-mucinous ovarian adenocarcinoma) or demonstrated selective and variable positivity (lung: D14, 50%; ovarian mucinous: D14, 50%). Among large polygonal cell carcinomas (hepatocellular carcinoma, renal cell carcinoma, melanoma, and adrenal carcinoma), only hepatomas stained positively, showing a distinctive canalicular staining pattern with the B18 (BGP epitope) (55%) and polyclonal antibody (50%). In the small polygonal cell carcinoma category, true CEA positivity was rare in breast (D14, 10% and B7.1, 14%) and never seen in prostatic carcinomas and carcinoid tumors. A subset of these breast (8 of 42), prostate (4 of 22), and carcinoids (4 of 7) showed exclusive positivity for the B18 antibody (NCA/BGP epitope). Ovarian serous papillary carcinomas (n = 14), papillary carcinomas of thyroid (n = 12), transitional cell carcinomas of the bladder (n = 11), and mesotheliomas (n = 3) were negative with all monoclonal antibodies. Metastatic carcinomas (n = 74) showed a similar pattern of reactivity to primary tumors. The authors conclude that CEA immunostaining may assist in identifying the histogenesis of epithelial tumors in several morphologic categories; that differential reactivities of the CEA monoclonal antibody panel exceed those of the polyclonal antibody; and that the discriminating power of the monoclonal panel is related to whether (1) CEA is or is not produced or (2) NCA or BGP is produced without concomitant CEA production. There is little evidence to support a concept of site-specific CEA species.
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PMID:Differential reactivities of carcinoembryonic antigen (CEA) and CEA-related monoclonal and polyclonal antibodies in common epithelial malignancies. 169 78

Carcinoembryonic antigen (CEA) was measured in 50 consecutive fine-needle aspirates of liver to determine whether elevated levels could predict the presence of carcinoma in cytologically negative aspirates. There were 44 malignant and 6 benign lesions. The highest mean CEA values (591-672 ng/ml) were obtained in metastatic adenocarcinoma of the colon, stomach, and pancreas; lower levels (13.5-151 ng/ml) were found in metastatic carcinoma from the breast and lung. Carcinoid, hepatoma, Hodgkin's disease, and benign liver aspirates had low (less than 5 ng/ml) CEA levels. Cytologic diagnosis of malignancy was 96% sensitive and 100% specific. Using 5 ng as a cutoff for malignancy, the overall sensitivity of CEA for detection of malignancy was 77%; for detection of adenocarcinoma alone, sensitivity was 85%. Specificity was 100%. The CEA content of fine-needle aspirates generally exceeded serum values by 10-100-fold. Although CEA content did not enhance the sensitivity of cytologic diagnosis, it may suggest metastatic carcinoma of the GI tract in patients presenting with adenocarcinoma of an unknown primary source.
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PMID:Carcinoembryonic antigen in fine-needle aspirate of liver: a diagnostic adjunct to cytology. 202 78

From April 1978 to 1st October 1990, 19 patients underwent liver transplantation for primary or secondary cancer of the liver. Eleven patients were transplanted for hepatocellular carcinoma secondary to cirrhosis, generally alcoholic (9 cases), hepatitis B (1 case) or secondary to haemochromatosis (1 cas). Three patients developed hepatocellular carcinoma in a normal liver, including one fibrolamellar cancer and three a proximal bile duct cancer. Lastly, two patients received a graft for secondary cancer from a colonic adenocarcinoma and a carcinoid tumour of the right colon. The operative mortality was nil for the transplantations for cancer in a normal liver, but there were 4 deaths out of the 11 cases of cancer secondary to cirrhosis. The actuarial survival of the overall series was 55% at 1 year and 31% at 2 years. The poorest survival was observed for cancers in a normal liver, with the exception of the fibrolamellar cancer in which recurrence was delayed. The longest survival was observed for cancers secondary to cirrhosis. At three years, the results of liver transplantation were equal to those of hepatic resections with a survival of 37%, despite the fact that the transplantation was generally performed for very large tumours.
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PMID:[Indications and results of hepatic transplantation for cancer]. 206 97

Endocrine tumors are useful sources for determining the synthesis and metabolism of secreted regulatory peptides. The present study was performed to compare the synthesis and metabolism of neurotensin (NT) in normal subjects and four patients with NT-producing tumors. NT mRNA was measured and characterized using oligonucleotide probes and Northern blots, while NT-like peptides were quantitated by RIA with region-specific antisera and high pressure liquid chromatography. Northern blot analysis of mRNA isolated from normal human ileum revealed two species of mRNA hybridizing to a heterologous canine oligonucleotide probe; the apparent sizes of the mRNA were 1.4 and 1.0 kilobases. An identical pattern was found in a pancreatic endocrine tumor, a prostatic adenocarcinoma, and a fibrolamellar hepatoma. The ratio of mRNA to peptide varied between the different tissues. For instance, the hepatoma was the richest source of NT mRNA, but the prostatic tumor contained the highest peptide concentration. Measurements with region-specific antisera showed that N-terminal immunoreactive fragments were more abundant than C-terminal fragments in pancreatic, prostatic, and carcinoid tumors (N/C-teminal ratios, 4.0, 1.6, and 5.0) and in equal concentrations in normal ileum. Reverse phase high pressure liquid chromatography revealed the presence of intact NT in addition to a variable number of smaller N-terminal peptides, presumed to be metabolites. In contrast the hepatoma contained a 5-fold excess of C-terminal immunoreactivity. The excess C-terminal immunoreactivity was also present in the circulation of this patient. The chromatographic properties, immunoreactivity, and unusual stability of the C-terminal fragment found in the hepatoma patient suggest that it is a substance distinct from NT itself and is released specifically by the fibrolamellar hepatoma.
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PMID:Expression of neurotensin in endocrine tumors. 240 68

Elevated serum levels of alpha-fetoprotein (AFP) (100-1,000 ng/ml) were found in three patients with islet cell tumors. Serial levels correlated with progression of disease, suggesting that AFP could be a useful tumor marker substance for islet cell tumors. Survey sera from an expanded pool of 23 patients with islet cell tumors and nine with carcinoid tumors did not identify additional cases, however, suggesting that elevated AFP levels in these classes of Apudomas are uncommon. Nonetheless, the distinction from other AFP-producing tumors such as hepatocellular carcinoma is clinically important and warrants an awareness of the rare association of AFP with these tumors.
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PMID:Alpha-fetoprotein associated with islet cell tumors. 243 69

Metastatic poorly differentiated carcinomas often represent diagnostic difficulties in surgical pathology. Therefore, the expression of cytokeratins of different molecular weights (54, 57, and 66 kd) were compared in paraffin sections of 37 primary carcinomas with their lymph node metastases by an avidin-biotin complex (ABC) method, using monoclonal antibodies. The epithelial tumors consisted of 16 squamous cell carcinomas (SCCs) and 17 adenocarcinomas with different degrees of differentiation (well, moderately, or poorly differentiated), a renal cell carcinoma, a hepatocellular carcinoma, a transitional cell carcinoma of the bladder, and a carcinoid tumor of the stomach. The primary and metastatic tumors showed the same cytokeratin profiles. All SCCs and their metastases were positive for 57-kd cytokeratin and negative for 54-kd cytokeratin. All adenocarcinomas and their metastases were positive for 54-kd cytokeratin and negative for 66-kd cytokeratin. The extent of reactions varied with the differentiation of the carcinomas, with well-differentiated tumors showing more diffuse staining. Cases of lymphoma, sarcoma, and melanoma were negative for the three types of cytokeratins. The results indicate that identification of different molecular weight cytokeratins may be used to distinguish poorly differentiated SCCs from poorly differentiated adenocarcinomas, even in metastatic tumors. In addition, demonstration of these cytokeratins is useful in substantiating presence and identity of small foci of metastases in lymph nodes.
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PMID:Comparison of cytokeratin expression in primary and metastatic carcinomas. Diagnostic application in surgical pathology. 243 26


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