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 natural history of gastric epithelial dysplasia and its relation to gastric cancer are ill defined. A consecutive series of 40 patients with an initial diagnosis of gastric epithelial dysplasia based on examination of endoscopic biopsies has been reviewed to determine the clinical outcome and to evaluate a two tier histological grading system as a predictor of the risk of cancer. On review, only 20 of the 40 patients were considered to have true dysplasia: seven patients had low grade dysplasia and 13 had high grade dysplasia. Of the 13 patients with high grade dysplasia, 11 (85%) were found to have gastric cancer within 15 months. Of the 10 patients with high grade dysplasia who underwent gastrectomy, six were found to have early gastric cancer, three had cancer invading into the muscularis propria, and none had lymph node metastases. High grade dysplasia is thus a marker of gastric cancer. Moreover, the cancers associated with high grade dysplasia are usually pathologically favourable and curable. The finding, by an experienced pathologist, of high grade dysplasia in two separate sets of endoscopic biopsies is therefore an indication for radical surgical treatment, provided that the patient's age and general condition permit such an approach.
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PMID:High grade dysplasia of the gastric mucosa: a marker for gastric carcinoma. 202 49

On the basis of literature and own observation a very rare form is discussed of skeletal system anomaly--osteopoikilosis+ which is considered to be a genetically determined, benign skeletal dysplasia. It manifests itself with numerous spotty densities of bony structure situated usually near the joints of long bones. They may be erroneously regarded as malignant metastases. The reported case of osteopoikilosis+ conformis the hereditary character of the disease.
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PMID:[A case of osteopoikilosis]. 226 Mar 17

Twenty-eight cases of minimal deviation melanoma (MDM) in the histologic setting of halo nevus formed the basis for this study. Requisites for this study included at least one of the following: a remnant of a halo nevus in a MDM; remnants of both MDM and halo nevus in a common melanoma; and a MDM of Spitz or dermal type, or MDM arising in premalignant dysplasia in which the vertical growth components manifested distinctive cytologic features and cytophilia for lymphocytes. Many of the lesions apparently represented neoplastic progressions involving a population of cells at the dermal-epidermal interface (accretive growth). Some of the lesions qualified as dermal variants and apparently represented neoplastic progressions in a dermal component (interstitial growth). Most examples of MDM in this study were borderline in size (less than 1.00 mm in vertical dimensions). The borderline MDM were interpreted as brief (and in some cases perhaps ephemeral) neoplastic interludes. For the 12 cases with follow-up, there have been no metastases or local recurrences.
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PMID:Minimal deviation melanoma (halo nevus variant). 229 81

Colonic epithelial tumors (101) including villoglandular adenomas, carcinomas in situ, adenocarcinomas, and neuroendocrine (NE) carcinomas were studied immunohistochemically with monoclonal antibodies (MoAb) RAP-5 and RAS-10 recognizing altered and unaltered ras oncogene products. In addition, 20 samples from multiple polyposis including adenomas with and without dysplasia, carcinomas in situ, and invasive carcinomas were studied. Using immunostaining techniques, normal mucosa was weakly stained, whereas the mucosa in the vicinity of tumors or inflammation showed enhanced staining. More tumors stained intensely with MoAb RAP-5 than with MoAb RAS-10. With MoAb RAP-5, most benign and malignant tumors showed enhanced staining. No significant differences in staining were noted in relation to superficial versus deeply invasive carcinomas or clinical staging. Immunostaining was also noted in some metastases. No significant differences in enhanced staining were found in carcinomas. Interestingly, the most extensive and enhanced immunostaining was noted in the villoglandular adenomas, dysplastic adenomas, and carcinomas in situ. The authors conclude that (1) ras protein expression is detectable in most benign, borderline, and malignant epithelial tumors of the colon as determined with MoAb RAP-5 and RAS-10, whereas enhanced expression is more often detected with RAP-5; (2) enhanced ras product expression in colon carcinomas does not seem to correlate with advanced tumor stages or with exocrine, NE, or phenotypically mixed tumors; and (3) the finding of the most intensely enhanced ras products expression in villoglandular polyps and carcinomas in situ suggests a possibly significant role for the oncogene in the early phases of transformation.
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PMID:An immunohistochemical analysis of ras oncogene expression in epithelial neoplasms of the colon. 240 34

Fifteen endocrine pancreatic tumours (8 insulinomas, 3 gastrinomas, 1 vipoma, 3 tumours without hormonal activity) and two cases with dysplasia of the endocrine pancreas are reported. Immunohistochemical and electronmicroscopical investigations produced evidence of multihormonality in adenomas that clinically appeared to be monohormonal. The S-phase fraction of such tumours is below 1% which indicates their low proliferative potential. The malignancy of endocrine pancreatic tumours cannot be seen from cytochemical or histological symptoms; it can be established with certainty only from the presence of metastases. Multiple endocrine adenomas should suggest the possibility of hereditary endocrine polyadenomatosis. Hyperplasia and distribution disorder of the endocrine tissue as well as pathologically increased nesidioblastic activity represent the morphologic substrate of dysplasia of the endocrine pancreas as a potential cause of hyperinsulinaemic hypoglycaemia in infancy.
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PMID:Pancreatic endocrine tumours: histological, immuncytochemical and electronmicroscopical investigations. 242 31

High levels of ferritin have been detected in serum and tumoral extracts of gastrointestinal neoplasms. However, its histological localization is not well known. An immunoperoxidase technique (PAP) was used for detecting ferritin in 30 colorectal carcinomas, 20 polyps and 8 cases of non-neoplastic mucosae. Ferritin staining was detected in stromal cells (98%) much more than in epithelial cells (21%). Connective cells were positive in 5 cases of normal mucosae (62%), 19 polyps (95%) and all carcinomas (100%). The number of positive cells gradually rose from normal mucosa to carcinoma with an intermediate score in adenomas. However, no relation could be found between the stromal ferritin score and dysplasia in polyps. Likewise, no relation was found between the stromal ferritin score and the differentiation grade, invasion or metastases in carcinomas. The positive epithelial pattern seen in 12 cases (21%) suggests non-specific staining due to passive diffusion from the stroma. Thus, these immunohistochemical findings suggest that in colonic neoplasms, ferritin could be a tumor marker produced mainly by stromal cell reaction more than by the epithelial cells.
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PMID:Ferritin immunohistochemical localization in normal and neoplastic colonic mucosa. 245 93

Since 1977, 196 patients (177 with ulcerative colitis and 19 with familial polyposis) have undergone colectomy, mucosal proctectomy and endorectal ileal pull-through with or without an ileal reservoir (PTR) at UCLA Medical Center. Fourteen of the patients (7.1 per cent) had carcinoma of the colon or rectum at the time of operation; 12 had colitis and two, polyposis. Another 40 patients had mucosal dysplasia. Only five of the 14 patients with carcinoma were diagnosed before operation despite close surveillance by gastroenterologists. The mean duration of colitis before the diagnosis of carcinoma was made was 17 years; the mean age that the carcinoma was identified was 38 years. Eleven of the 12 patients with colitis had universal involvement. Two patients with colitis and carcinoma who underwent colectomy and PTR died a mean of 30.5 months postoperatively of metastatic disease. Twelve patients with carcinoma (ten with colitis and two with polyposis) are alive a mean of 29 months postcolectomy and PTR; two of these have received chemotherapy. The low mortality (0.4 per cent) and good clinical results after colectomy and the PTR procedure and the unexpectedly high incidence of carcinoma and mucosal dysplasia among patients referred for operation suggest that surgical treatment should be considered at an earlier stage than the current general practice, particularly in patients at high risk (mucosal dysplasia, pancolitis and duration of more than ten years).
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PMID:The endorectal ileal pullthrough procedure in patients with ulcerative colitis and familial polyposis with carcinoma. 254 48

We studied 217 consecutive tumors of bone by flow cytometric analysis of nuclear DNA concentration after staining with propidium iodide. A diagnosis and histological grade (benign, low-grade, or high-grade sarcoma) were assigned to each tumor on the basis of staging data (with the exception of the forty-six giant-cell tumors, which, although indistinguishable histologically, were divided according to the flow cytometric pattern into two distinct groups), and we quantitatively studied the flow cytometry data to assess the percentages of cells in diploidy, tetraploidy, or aneuploidy. When compared, the mean values for the flow cytometric data for the three grades showed significant differences. Criteria were established for the three classes of tumors: for benign tumors, less than 11 per cent tetraploidy and no aneuploidy; for low-grade sarcomas, more than 11 per cent and less than 17 per cent tetraploidy, and no aneuploidy; and for high-grade tumors, either more than 17 per cent tetraploidy or aneuploidy. Tests for compliance for all groups of tumors (excluding the forty-six giant-cell tumors)--benign, low grade, or high grade--were significant for most of the benign lesions (with the exception of chondroblastoma and fibrous dysplasia) and for the high-grade sarcomas (with the exception of round-cell tumors). The low-grade sarcomas did far less well, based principally on the failure of the low-grade chondrosarcomas, chordomas, and adamantinomas to comply with the criteria. An attempt to assess the value of the system as a predictor of metastases showed that a low percentage of diploid cells (less than 75 per cent) and the presence of an aneuploid peak correlated statistically with the development of metastatic disease, but the usefulness of this observation could not be fully assessed because of multiple variables, associated principally with treatment.
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PMID:Grading of bone tumors by analysis of nuclear DNA content using flow cytometry. 257 83

This study was intended to reveal the long-term prognosis in 21 patients with oral squamous cell carcinoma evaluated histologically as having disappeared by bleomycin treatment. Of 16 cases treated with bleomycin alone, recurrence was observed in 4, and cervical metastases in 2, with survival achieved for 5 years or more in 7 (more than 10 years in 3). No recurrence was observed in 5 patients in whom surgery was additionally performed after the bleomycin treatment, but cervical metastasis was found in one of them. In the cases with epithelial dysplasia after bleomycin therapy, recurrence and metastasis were frequent compared to those with normal epithelium, and this discrepancy was of statistical significance. It has been proved that there are long-term survivors among patients with oral carcinoma treated with bleomycin alone.
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PMID:[Long-term prognosis of oral squamous cell carcinoma histologically judged to have been eliminated by the treatment with bleomycin alone]. 258 57

The left eye of an otherwise healthy child was enucleated at the age of 2 months because of an enlarging mass involving the temporal iris, ciliary body, and anterior retina. The initial histopathologic diagnosis was malignant medulloepithelioma with orbital extension. Closer study revealed a superotemporal chorioretinal and ciliary body coloboma; dysplasia of the adjacent retina; a glioneuromatous mass replacing the temporal ciliary body, chamber angle structures, and iris and extending through the sclera to involve the insertion of the lateral rectus muscle; neuroepithelial elements resembling medulloepithelioma; and abnormally developed iris pigment epithelium, and dilator and sphincter muscles. Immunohistochemistry demonstrated that the main mass consisted of neurons positive for neuron-specific enolase (NSE), synaptophysin and neurofilaments, and glial cells expressing vimentin, glial fibrillary acidic protein, and S-100 protein. The neuroepithelial elements reacted positively for cytokeratins and S-100 protein, in addition to NSE and vimentin, suggesting ciliary epithelial rather than embryonic retinal origin. The tumor was rediagnosed as glioneuroma, which in this case was part of a widespread colobomatous dysplasia of the anterior uvea and retina. The patient is alive without metastases or local recurrence 2 years following enucleation and subtotal removal of the lesion.
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PMID:Glioneuroma associated with colobomatous dysplasia of the anterior uvea and retina. A case simulating medulloepithelioma. 262 23


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