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)

The anatomy of renal lymphatic vessels is described. Marked discrepancy in the results of lymphangiography carried out in 47 patients with kidney tumor and the histological examination of the lymphatic tissue removed by lymphadenectomy is discussed. However, there is a conclusive evidence of the prognostic value of lymphangiography concerning the postoperative survival of patients with kidney tumors. Due to misinterpretations of lymphangiography, the variability of the lymphatic outflow of the kidney as well as the predominant hematogenic spread of metastases of kidney tumors, lymphangiography does not appear to be a valuable diagnostic approach in renal carcinoma.
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PMID:[Lymphangiography--a guide in tumor nephrectomy?]. 65 2

The growth characteristics and metastatic behavior of human tumors growing in athymic nude mice were studied. Human tumor cell lines HEp-2 (carcinoma or larynx) and SW480 (colon carcinoma) were transplanted into athymic nude mice of BALB/c origin. Tumor cells (1 x 10(6) and 2 x 10(7)) were given either s.c. or i.p. Following s.c. injection tumors developed rapidly to become easily palpable with 2 weeks forming a s.c. tumor focus surrounded by a thick fibrous capsule. Animals with s.c. transplants were little affected by the growing tumor. At the time they were sacrificed at Day 34 (HEp-2) and 62 (SW480), a large part of the tumor was necrotic. Capsular infiltration and invasion of lymphatic vessels and perineural and perivascular lymphatic spaces were observed. Metastases to regional lymph nodes were seen in animals kept alive for up to 6 months. Following i.p. transplantation, tumors spread widely in the peritoneal cavity, invaded intraabdominal organs, and metastasized to mediastinal lymph nodes and lungs. Fifteen of 26 animals (60%) developed metastases. Necrosis of the i.p. growing tumors was minimal. All animals in this group died as a result of tumor growth.
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PMID:Growth patterns and metastatic behavior of human tumors growing in athymic mice. 68 9

1. It is well known that microscopically small particles may be absorbed from the peritoneal cavity via the large lymphatic vessels. The present experiments were carried out in order to elucidate the site of the absorption. In addition, the role of transperitoneal transport of neoplastic cells as a possible cause of cancer metastases was studied. 2. The peritoneal surface of 40 rats and mice was studied with the scanning electron microscope (diaphragm, lateral abdominal wall). The investigations were carried out in 8 rats and 3 mice 24 hrs following the intraperitoneal injection of washed homologous erythrocytes and in 20 rats and 5 mice 24 hrs after the intraperitoneal injection of Ehrlich ascites tumor cells. 2 rats and 2 mice served as controls. 3. In the control animals no stomata could be shown in the peritoneum of the diaphragm or in the lateral abdominal wall. 4. The i.p. injection of erythrocytes was followed by the appearance of stomata in the peritoneal surface of the diaphragm, and absorption of erythrocytes could be demonstrated. No stomata were found in the peritoneum of the lateral abdominal wall. 5. Tumor cells were found in the stomata following the i.p. injection of ascites tumor cells. It is concluded that a lympho-hematogenous spread of tumor cells seems probable at least in the early stage of tumor infiltration of the peritoneum. This stage is followed by implantation of the tumor cells on the peritoneum.
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PMID:[Experimental investigations on cell resorption from the peritoneal cavity by use of the scanning electron microscope (author's transl)]. 118 43

Using an intragastric contrast medium (Lipiodol) the paragastric lymph nodes of 23 patients were lymphangiographed prior to laparotomy. The patients suffered from gastric or duodenal ulcers (15 cases), postresectional ulcers (3 cases), or gastric carcinoma (5 cases). The surgically resected material was examined by radiological and histological techniques. The following results were obtained: 1. After application of the contrast medium the paragastric lymph nodes could firstly be seen 5 hours later and even after 7 days and more. 2. The radiographs presented typical storage phenomena with granular or clod-like structures as an equivalent of the inflammatory lymph node alterations. Histologically a marked sinus catarrh with lipid laden reticulum cells and multinuclear giant cells of the foreign body types was observed. 3. In gastric carcinoma characteristic storage defects up to complete destruction of the lymph nodes were found as a roentgenological equivalent of lymph nodes metastases. In addition there were occasionally abnormal courses of the lymphatic vessels with variations in diameter and bizarre storage formations. 4. The described method provides a helpful tool in the diagnosis of gastric lesions. No side effects have been observed.
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PMID:[Endoscopic-radiological demonstration of the gastrointestinal lymph nodes and lymph vessels]. 124 76

Eccrine porocarcinoma is a rare tumor of the skin. We report a case on the chin that was successfully treated with Mohs surgery. In our review of the world's literature 105 cases were compiled. The tumor most often occurs in the elderly and affects men more frequently than women. It may develop from a preexisting benign poroma and may also appear as a verrucous or nodular, ulcerative growth. Approximately 50% of the tumors occur on the lower extremities; the leg is the most common site. Microscopically the tumor demonstrates both intraepidermal and dermal invasion and is capable of forming satellite lesions and in-transit metastases when lymphatic vessels are invaded. The local recurrence and regional metastatic rates are both approximately 20%. Distant metastasis occurs in 12% of cases. The mortality rate is more than 65% when regional nodes are involved.
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PMID:Eccrine porocarcinoma of the face. 132 87

The oncological substantiation of endoscopic and economical surgical treatment of T1N0-1M0 gastric carcinoma in 46 patients was appraised. The results were studied with due regard for the peculiarities of early gastric carcinoma (EGC) revealed in 290 patients after standard surgical management. It was established that organ-preserving treatment of ECG is possible--5-years survival was 96.2%. Endoscopic removal can be considered radical only in T1P1 tumors without invasion of the lymphatic vessels of the wall and was of a multistage character in 86.2% of cases. Careful surveillance after its completion is necessary. Surgical treatment in indicated in repeated recurrences; they were encountered in 44.8% of cases. The causes of the recurrences were noncoincidence of the macroscopic and histological boundaries of the tumor (33.6%), multicentric growth (30.4%), and invasion of the submucosa. Metastases are encountered in the lymph nodes in 9.1% of cases in economical treatment. In T1N0-1M0P1-2 carcinoma, absence of multicentric growth, and III degree dysplasia in the surrounding mucosa (reflecting increased risk of multicentric growth) the volume of organ resection may be limited on condition that P1 lymphadenectomy is performed. The results of organ-preserving treatment are comparable with those of surgical treatment conducted in a standard volume.
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PMID:[The potentials for the organ-preserving treatment of early stomach cancer]. 143 62

Bladder tumor has a spectrum of neoplastic activity. Some behave in a benign fashion, and others are highly aggressive and lead rapidly to metastatic disease and death. The processes of metastasis can be described as a sequence of interrelated steps. The processes involve 1) tumor cell adhesion to basement membranes, 2) the degradation of basement membranes, and 3) the migration of tumor cells through the destroyed stroma into blood and lymphatic vessels. Each of these processes involves the expression of molecular factors unique to tumor cells. With better understanding of the molecular basis of these factors, novel prognostic and potential therapeutic agents can be generated and applied to the clinical arena.
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PMID:Biology of metastasis: clinical implications. 146 96

We studied 428 lymph nodes attached to the head of the pancreas (13,14,17) in 18 patients with ductal carcinoma of the pancreatic head. These were classified into the small size of the lymph nodes less than 5mm (group S), the moderate size of the lymph nodes (group M) and the large size of the lymph nodes more than 10 mm (group L). The metastases were seen in 76 nodes, which consisted of 49 with group S, 14 with group M and 13 with group L. The lymph node involvement in group (14) S was found in 7 of 18 patients (38.9%), that in group (14) M was in 4 (22.2%) and that in group (14) L was in 2 (11.1%). In these involved cases, the primary tumors tended to be locate in the portion near the superior mesenteric artery, such as in the uncinate process. Invasion of extrapancreatic neural plexus was noted in 9 of 18 patients (50%). There was no significant correlation between nerve plexus invasion and lymphatic invasion by Spearman's rank correlation. In addition, any close relationship between plexus invasion and primary tumor location could not be indicated. These results suggested that neural invasion in pancreatic carcinoma is independent of lymphatic invasion, and the routes of cancer spread via the neural plexus are different from those via the lymphatic vessels. Those without liver metastases survived longer than those with liver metastases, which were characteristically multiple.
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PMID:[Involvement of lymph nodes and neural plexus in carcinoma of the pancreas]. 146 37

Among all neoplasms of the mediastinum, those composed of mesenchymal elements, and arising primarily in mediastinal soft tissue, are the least common group of tumors discussed in this issue of Seminars. Apart from tumors of nerve sheath, neuroectoderm, adipose tissue, and lymphatic vessels, few of them will comprise a significant part of the surgical pathologist's practice. Yet each poses two important clinical problems: the recognition of visceral-associated (as opposed to primary soft tissue) lesions, and the exclusion of metastases from an extrathoracic site. In this review, the histologic, immunohistochemical, and ultrastructural features that characterize mediastinal soft tissue tumors will be emphasized. Clinical aspects of these lesions are also discussed, particularly as they may relate to the aforementioned clinical questions.
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PMID:Soft tissue neoplasma of the mediastinum. 164 75

For the purpose of demonstrating the relationship between the expression of ras oncogene p21 protein and clinico-pathological characteristics which reflected the prognosis, 253 women with breast cancer who underwent mastectomy were analyzed. Ras p21 was detected in 133 (52.6%). In histological types, scirrhous carcinomas were more often ras p21-positive, and papillo-tubular carcinoma were usually negative. And histological grade was significantly correlated with ras p21. The degrees of invasion to fat tissues and infiltration into lymphatic vessels were also significantly correlated with ras p21. Tumors with lymph node metastases expressed higher levels of ras p21 than nonmetastasizing tumors in smaller tumors, especially in papillo-tubular carcinomas. And patients with elevated ras expression tended to have a poor prognosis. These results suggested that an elevated ras expression may play an important role in the development of aggressive tumors.
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PMID:[Expression of ras oncogene p21 in relation to prognostic factors of human breast cancer]. 165 90


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