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  • 1
    ISSN: 1436-2813
    Keywords: focal nodular hyperplasia (FNH) ; liver resection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present herein two successfully treated cases of focal nodular hyperplasia (FNH) of the liver, a relatively rare disease. Case 1 was a 3 year old child in whom typical FNH developed in the left lateral segment of the liver, whereas Case 2 was a 22 year old man in whom characteristic findings were lacking on preoperative diagnostic imaging. Scintigraphy was not performed in either case, however, postoperative histological examination confirmed FNH. Thus, in patients with a hypervascular tumor and normal liver function, FNH should be strongly suspected and a series of scintigraphy proposed. Both cases showed a negative association with oral contraceptive intake but no other obvious etiology was suggested.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of hepato-biliary-pancreatic surgery 7 (2000), S. 575-579 
    ISSN: 1436-0691
    Keywords: Key words Precancerous conditions ; Pancreatic duct adenocarcinoma ; Hamster ; Human
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Precancerous conditions for ductal adenocarcinoma of the pancreas in hamsters and human beings are discussed. In hamsters, ductal adenocarcinomas induced by nitrosamines are of nonmucin-hypersecreting tubular or papillary tumor types, and genetic alterations resembling these types are found in their human counterparts. Ductal lesions develop step-by-step from hyperplasias to carcinomas, and atypical ductal cell hyperplasias may be precancerous. In humans, ductal lesions, hyperplasias, or dysplasias, with or without mucin hypersecretion, are possible preneoplastic conditions. Genetic or phenotypic markers to determine their likelihood of progressing to pancreatic duct adenocarcinomas are a high priority for future research.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1436-2813
    Keywords: esophageal adenocarcinoma ; AFP ; liver metastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This paper describes a rare case of adenocarcinoma located in the middle portion of the esophagus with liver metastasis. An 80-year-old man was admitted to our hospital with dysphagia and vomiting, following which an upper gastrointestinal series and esophagoscopy located an elevated-type carcinoma in the middle thoracic esophagus. Computed tomography revealed an esophageal tumor invading the left atrium and aorta, and multiple intrathoracic lymph node swellings, and an ultrasonograph of the liver showed multiple liver metastases. The serum carcinoembryonic antigen, carbohydrate antigen 19-9, and squamous cell carcinoma-related antigen levels were normal, but the serum alpha-fetoprotein (AFP) level was 351.5 ng/ml. The patient died 124 days after undergoing an esophageal bypass operation. On post-mortem histological examination, the original esophageal tumor was diagnosed as a poorly differentiated adenocarcinoma without a squamous component and immunohistochemical staining for AFP showed positive granules in the cytoplasm. All the metastatic nodules, including the lymph nodes, liver, spleen, and lungs, showed the same histological type and AFP-staining pattern as the original esophageal tumor. To our knowledge, this is the first case of AFP-producing esophageal carcinoma to be reported in Japan.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1436-2813
    Keywords: pancreas tumor ; solid and papillary tumor ; immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A case of a solid and papillary (solid-cystic) tumor of the pancreas occurring in a 36-year-old man is herein reported. This patient was admitted with left hypochondrial pain and diagnostic imaging detected a large tumor consisting of both solid and cystic components in the tail of the pancreas. A distal pancreatectomy with splenectomy was performed. The resected tumor was diagnosed as a solid and papillary tumor of the pancreas by pathological examination. Detailed immunohistochemical studies showed that the tumor consisted of cells both exocrine and endocrine in character. Thus, this case appears interesting from the point of cellular differentiation in solid and papillary tumors, since they are generally considered to have an acinar cell origin.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1436-2813
    Keywords: internal thoracic artery ; coronary artery ; arteriosclerosis ; lipid content ; coronary artery bypass grafting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Pathohistological and biochemical studies were conducted on the severity of arteriosclerosis in the internal thoracic artery (ITA), an artery commonly used for coronary artery bypass grafting (CABG). For the pathohistological examination, 26 bilateral ITAs and 13 left anterior descending coronary arteries (LADs) obtained in full length from 13 autopsy cases, none of which had died of arteriosclerotic heart disease, were used. The ratio of the thickness of the intima to that of the media (R) was used as the index for arteriosclerosis. ITAs and LADs were classified as grades I to IV according to the value of R. The R of the ITAs was approximately 1/10 that of the LADs (P〈0.01). Most ITAs showed a low arteriosclerotic grade, with no variation in arteriosclerosis along their length and a low R in all segments. No difference was found between right and left ITAs. Biochemical examination was conducted on 12 ITAs and 11 LADs, obtained from 12 different and unselected autopsy cases. The lipid content in the vascular wall was determined to evaluate the severity of arteriosclerosis, with the following results: Total cholesterol, 5.5±1.8 and 17.8±13.6 μg/mg wet weight (P〈0.05); triglyceride, 90.4±90.3 and 114.4±117.2 μg/mg wet weight (n.s.); and phospholipid, 7.4±3.9 and 11.2±3.9 μg/mg wet weight (P〈0.05), respectively, for the ITAs and LADs. These findings thus demonstrate that arteriosclerosis of the ITA in Japanese people is very mild, compared to that of the LAD in the same individuals.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1435-5922
    Keywords: malignant lymphoma ; stomach ; strip biopsy ; gastric malignant lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A case of early gastric malignant lymphoma definitively diagnosed by strip biopsy is reported. The subsequent operation revealed that the strip biopsy had resulted in radical resection. A 55-year-old woman visited our hospital for detailed examination of a small gastric lesion. Histologic findings of the specimens obtained by conventional forceps biopsy indicated reactive lymphoid hyperplasia, although the possibility of malignant lymphoma was not completely ruled out. Strip biopsy was, therefore, performed to establish a definitive diagnosis. Histopathological examinations of the strip biopsy specimen revealed definitive findings of malignant lymphoma, which was B-cell phenotype immunocytochemically. The margin of the resected specimen was free of invasion by malignant lymphoma and no lymph node involvement was suggested by endoscopic ultrasonography, computed tomography, and gallium scintigram. Subtotal gastrectomy was subsequently performed to rule out the possibility of remaining malignant lymphoma cells. It was proven that the strip biopsy removed the lesion completely and no perigastric lymph nodes were involved. While is still controversial as to whether strip biopsy should be adopted for the radical resection of early gastric lymphoma, this procedure can definitely provide excellent specimens for the accurate diagnosis of gastric malignant lymphoma and probably for group III lesions in the stomach.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 3 (1979), S. 641-648 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Trente-trois spécimens de carcinome gastrique humain ont été transplantés chez la souris nue. La “prise” initiale de la tumeur a été obtenue dans 15/ 33 cas et 45.5% des tumeurs sont transplantables. La possibilité de transplantation est en rapport avec le type histologique, mais pas avec le stade clinique ni avec la classification de Borrmann. Les carcinomes différenciés (adénocarcinome tubulaire bien ou modérément différencié, adénocarcinome papillaire) se transplantent mieux que les tumeurs peu différenciées (adénocarcinome peu différencié, adénocarcinome mucineux). Le mode de croissance des tumeurs transplantées a été classé en 3 groupes: rapide, lent et stationnaire. Il n'y a pas de relation spécifique entre mode de croissance et type histologique. Tous les cancers, quel que soit le type histologique à l'exception des tumeurs de Krukenberg, ont pu être transplantés en série. Après transplantation en série, la croissance des tumeurs devient rapide. Pourtant l'aspect histologique de départ reste inchangé. Aucune invasion, aucune métastase n'ont été observées. L'injection intrapéritonéale de suspensions de cellules tumorales préparées à partir de transplants sous-cutanés d'adénocarcinomes peu différenciés de type Borrmann III donne une croissance avec production d'ascite, invasion régionale et métastases. L'ascite s'accumule en 3–6 semaines aprés l'innoculation. L'injection intraveineuse de liquide d'ascite chez la souris nue provoque le développement de métastases. L'histologie de la tumeur souscutanée est comparable aux aspects de la tumeur originale prélevée chez le malade.
    Notes: Abstract A total of 33 specimens of human gastric carcinoma were used for transplantation into nude mice. Initial tumor “take” was accomplished in 15 of the 33 tumors, and the transportability rate was 45.5%. Transplantability correlated with histologic type, but not with clinical stage or Borrmann's classification. The transplantability rate of differentiated carcinomas, such as well-differentiated tubular adenocarcinoma, moderately differentiated tubular adenocarcinoma, and papillary adenocarcinoma was greater than that of poorly differentiated tumors, such as poorly differentiated adenocarcinoma and mucinous adenocarcinoma. The growth patterns of transplanted tumors were divided into 3 types: rapid, slow, and persistent. There were no specific relationships between growth pattern and histologic type. All histologic types, except signet ring cell carcinoma, could be transplanted serially. Tumor growth became rapid after serial transfer. However, the original histology of these tumors was unchanged. No invasion or metastases were encountered. Intraperitoneal injection of a tumor cell suspension, prepared from subcutaneous transplants of a poorly differentiated adenocarcinoma of Borrmann type III, grew in an ascites form, with invasion and metastasis. Ascitic fluid accumulated within 3–6 weeks after injection. Subsequently, intravenous injection of ascites fluid produced metastases in nude mice. The histology of the subcutaneous tumor was similar to that of the original tumor from the patient.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2307
    Keywords: Clear cell sarcoma ; Melanosomes ; Cytochemistry ; Electron microscopy ; Nude mouse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to clarify the histogenesis of clear cell sarcoma of tendons and aponeuroses (CCS), two cases of human and one nude mouse-transplanted CCS line were studied using an ultrastructural and enzyme cytochemical approach. Most of the tumour cells obtained from the primary and transplanted CCS demonstrated melanosomes in various stages of development within the cytoplasm, whereas no melanosomes could be identified in the metastatic CCS. However, cholinesterase and tyrosinase activities could be demonstrated not only in the melanotic primary and transplanted CCS but also in the amelanotic metastatic CCS. The results therefore support the hypothesis that CCS is a soft tissue tumour derived from the neural crest.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2307
    Keywords: Key words Tsc2 protein ; Renal cell carcinoma ; Eker rat ; Tuberous sclerosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Alterations in the rat tuberous sclerosis gene (Tsc2) are responsible for the hereditary renal carcinomas (RCs) of Eker rat. We examined protein distribution in various normal rat tissues and the Eker RCs by immunohistochemistry. Tsc2 protein is expressed in the mammary ducts, salivary glands, gastric glands, parathyroid, small and large intestine, ovary and uterus. Specific expression of Tsc2 protein is found in the B cells of pancreatic islets and in the smooth muscle of lung veins. Interestingly, in the RCs of Eker rat, Tsc2 protein was detectable with some variation in reactivity.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-2307
    Keywords: Membranous lipodystrophy ; Nasu-Hakola disease ; Lipid and glyconconjugate ; Cytochemistry ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to assess the lipid and glycoconjugate characteristics of membranous lipodystrophy, a 29-year-old male with this disease was studied using an ultrastructural cytochemical approach. The specific membranocystic lesions of the disease are composed of cystic spaces and the lining membranes. The membranes were observed to have a two-layered character: microtubular structures in the layer adjacent to the spaces and a central amorphous zone. Lipid staining and the lipase digestion test revealed triglycerides localized not only in the cystic spaces but also in the microtubular structures. Lectin histochemical examintion of carbohydrate components demonstrated thatMaclura pomifera agglutinin bound strongly to the membranes, whileGriffonia simplicifolia I,G. simplicifolia II,Concanavalia ensiformis andTriticum vulgaris agglutinin reacted weakly. Our results indicate the presence of triglycerides and carbohydrates with mainlyα-D-galactose residues in the distinctive membranocystic lesions, in particular in the microtubular structures.
    Type of Medium: Electronic Resource
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