Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0007097 (carcinoma)
 152,788 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In the large intestine, the pathologist has to differentiate between multiple polyps and polyposis (more than 100 polyps), further between adenomatosis (coli) and non-neoplastic (tumorlike) polyposis. Without prophylactic colectomy, in about 80% of adenomatosis patients an evolution of cancer is observed. Patients with extensive or total ulcerative colitis and a long history have an increased risk for developing carcinoma. Precancerous dysplasia can be demonstrated in rectoscopic and/or colonoscopic biopsies. Cancers complicating adenomatosis or ulcerative colitis account for only a very small proportion of large bowel carcinoma. The "adenoma-cancer sequence" is of greater importance. Colorectal polyps should be removed endoscopically whenever possible. Most gastric polyps are non-neoplastic and have no carcinomatous potential. The true adenoma and the so-called borderline lesion only can be considered as precursor of the gastric carcinoma.
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PMID:[Precancerous lesions in the gastrointestinal tract]. 2 48

Male rats were treated with the hepatocarcinogen, N-nitrosomorpholine (NNM, 10 mg ad 100 ml drinking water) for 19 weeks. Repeated fine-needle aspiration biopsies of the liver were performed percutaneously. Cytomorphologic and cytochemical criteria were used for the characterization of dysplastic and carcinoma cells. The alterations seen in the smears were correlated with histopathologic findings in the punctured liver lobes. Cells showing type I dysplasia were recognized in smears obtained from day 7 on. They corresponded to the swollen, glycogen-free cells developing in zone 3 of the Rappaport acinus during the early treatment phases. In later stages type I dysplastic cells were observed in smears. This coincided with the development of neoplastic nodules seen in histopathologic preparations. Carcinoma cells were recognized first after 15 weeks. Marked gamma-glutamyl transpeptidase (gamma-GT) activity could be demonstrated cytochemically in biopsy smears and biochemically in biopsy homogenates during the early phases of NNM-treatment. Simultaneously, a rise in gamma-GT activity was also observed in the serum.
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PMID:Application of fine-needle aspiration biopsy for the diagnosis of dysplastic and neoplastic liver cell changes induced by N-nitrosomorpholine in rats. 4 75

The human uterine cervix offers a unique opportunity to study the early lesions of squamous cell carcinoma, i.e., carcinoma in situ and dysplasia [combined as cervical intraepithelial neoplasia (CIN)]. In vivo, the patients with CIN have the epidemiological common denominators or "markers" of early onset of coitus, multiple sexual partners, 1st delivery before age 20, and antibodies to herpes simplex virus type 2 more frequently than do controls. The lesions themselves have specific epithelial and vascular changes observable with the colposcope in addition to the usual histological markers from biopsy specimens. The chromosomes and DNA content of cells in these lesions are abnormal. In vitro, the cells from CIN have characteristics somewhat between normal and invasive carcinoma. They lack contact inhibition and may be transferred for several generations, in contrast to normal cervical epithelial cells. The fibroblasts from areas adjacent to DIN are different from normal fibroblasts. The mitotic mechanism in cells cultured from CIN has a significantly prolonged prophase and telophase when compared to similar normal cells. The surface of CIN cells, unlike normal cells, has numerous microvilli when examined by scanning electron microscopy and has characteristic differences from normal cells with numerous elongated, irregular microvilli. With the transmission electron microscope, an increase in microvilli and a decrease in desmosomes and tonofibrils are seen in CIN cells. Some of these markers are being used clinically to manage patients with CIN. Other markers are the basis for further investigation of human carcinogenesis.
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PMID:In vivo and in vitro "markers" of human cervical intraepithelial neoplasia. 5 20

1625 cervical smears from 397 women were investigated in special cytological consultations. On the same material 693 impulse cytophotometric (ICP) measurements were made, stained with ethidium bromide after pepsination. In 207 patients the diagnosis was certain by histology. The mean height of the 4c-peak (in 0/00 of the 2c-peak) raises with the Papanicolaou grading from 38,2 in Pap. I up to 128,8 in Pap. V. In histological confirmed cases in dysplasia the mean 4c-height was 79,5 and in carcinoma 102.2. If only one ICP investigation was turned to account there are some disagreements between the ICP value and the diagnosis finally resulting from the clinical and cytological course. The differences are considerably diminished by repeated ICP investigations. Therefore ICP measurements are a valuable aid in interpreting cytodiagnostic problems. They often facilitate the choice of further diagnostic and therapeutic procedures.
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PMID:[Pulse cytophotometric and cytologic repeated examinations of cervical secretions as compared with histologic findings (author's transl)]. 6 43

Out of 421 patients who had partial gastrectomy 20-25 years ago for gastric or duodenal ulcer, 108 were examined by endoscopy with multiple biopsy. In no case were the endoscopic appearances of the mucosae interpreted as malignant, though in 2 patients the clinical history suggest malignant disease. Histological examination revealed infiltrating carcinoma in 4 patients, 3 of whom had intramucosal carcinoma only. 3 further patients had severe dysplasia (carcinoma-in-situ). Only 1 patient had a near-normal mucosa close to the anastomosis; in the remainder the gastric remnant showed various degress of dysplasia, metaplasia, or chronic atrophic gastritis. In the patients with carcinoma only 28 (12%) of the 226 biopsy specimens revealed the malignant lesion. Patients who have had partial gastrectomy for benign lesions are at high risk of gastric-stump carcinoma. If, 20 years after operation, they have an endoscopy with multiple biopsy, stump carcinoma may be detected early when the prognosis after operation is probably good.
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PMID:Mucosal changes in the gastric stump 20-25 years after partial gastrectomy. 7 Jun 85

By a collaborative effort among British cytopathologists, 101 women were identified who had had unsuspected "positive" cervical smears but who, after at least 2 years, had still escaped biopsy through refusal, default, or failure to trace. Of these, 31 still could not be traced; 10 were traced but could not be further examined (8 because they refused); 7 had clinically diagnosed carcinoma of the cervix; and the remaining 53 had further smears and/or biopsies after a mean interval of 5.2 years. In 19 of the 53 the smear had become negative or biopsy showed no lesion. Regression was confined to women aged under 40 at the time of the initial positive smear. In 20 cases biopsy showed dysplasia or carcinoma-in-situ, in 3 microinvasive carcinoma, and in 3 occult invasive carcinoma. Of the 7 women who presented clinically with carcinoma of the cervix, this caused death in 5.
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PMID:Women with positive cervical smears but without surgical intervention. A follow-up study. 7 18

Lymphocyte sensitivity to encephalitogenic factor (EF) was measured with the macrophage migration inhibition (MMI) test in 60 women with dysplasia or carcinoma in situ of the cervix, in 10 women with invasive cervical carcinoma, and in 20 women with a variety of benign gynaecological conditions. Significant migration inhibition with EF (P less than 0.01) was seen with lymphocytes taken from 7/13 (54%) women with mild and/or moderate dysplasia, from 22/47 (47%) women with severe dysplasia and/or carcinoma in situ, from 6/10 (60%) women with invasive cervical carcinoma and from 3/20 (15%) women with benign gynaecological conditions. Autologous serum was seen to abrogate EF-mediated migration inhibition in 3/4 sensitized women with mild and/or moderate dysplasia, in 5/7 sensitized women with severe dysplasia and/or csrcinoma in situ and in 2/3 sensitized women with invasive cervical carcinoma. Autologous serum from 2 sensitized women with benign gynaecological conditions did not abrogate the response of their lymphocytes to EF.
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PMID:Cell-mediated immunity to encephalitogenic factor (MMI test) in women with cervical dysplasia and carcinoma in situ: the effects of serum. 8 75

Carcinoembryonic antigen (CEA) was studied by the indirect triple-bridge immunoperoxidase method in formalin-fixed paraffin-embedded tissue specimens from 191 patients with premalignant epithelial lesions or epidermoid carcinoma of the uterine cervix treated 12 years ago. The frequency of tissue CEA positivity was found to increase with advancing clinical disease in the following manner: mild dysplasia, 25%; severe dysplasia, 37%; carcinoma in situ, 60%; invasive carcinoma stage I, 60%; stage IIa, 65%; stage IIb, 80%; and stages III and IV, 69%. The prognostic significance of the tissue CEA positivity was studied in two groups of patients formed on the basis of clinical spread and treatment of the disease. The first group of 60 patients with stage I and IIa cancers had undergone radical surgery. The second group of 44 patients with more advanced carcinoma had been treated by radiotherapy alone. No significant difference in the survival rates was observed in either group between patients with CEA-positive and CEA-negative tumours. In the light of the absence of CEA from normal cervical epithelium, the increasing occurrence of CEA from premalignant lesions to advancing malignant growth suggests that CEA reflects an aggressive potential in premalignant lesions. However, the survival data on patients with CEA-positive and -negative invasive carcinomas suggest that CEA-positive cancers are not more malignant than CEA-negative cancers.
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PMID:Tissue CEA in premalignant epithelial lesions and epidermoid carcinoma of the uterine cervix: prognostic significance. 8 22

An endoscopic survey was undertaken in northern Iran to identify and determine the prevalence of possible precancerous lesions of the oesophagus. 218 men and 212 women, aged between 15 and 70 years, were included in the study. Oesophagoscopies were done on all 430 subjects and biopsies on 418. A chronic oesophagitis, involving mainly the middle and lower thirds of the oesophagus, was found in 80% of the subjects, and the frequency was very high even in the younger age-groups. Clinically and histologically the oesophagitis in this rural population was different from that observed in the low-risk areas of Europe and the United States, where oesophagitis is often associated with reflux. Dysplasia was diagnosed in 16 subjects and invasive carcinoma in 11. The very high prevalence of chronic oesophagitis in northern Iran, where a high incidence of oesophageal cancer has also been reported, suggests that these two lesions are associated.
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PMID:Oesophageal lesions in northern Iran: a premalignant condition? 8 31

A double-blind pilot study of 130 female patients was carried out to determine the feasibility and significance of the EM test in the early diagnosis of carcinoma of the female genital organs and breast. Early stages of cervical carcinoma (carcinoma in situ) as well as fibroid adenoma, mastopathy and breast tumors were tested and compared with the results of their manifest forms. Positive results were recorded in 87.5% of the cases of middle-grade to severe epithelial dysplasia (Papanicolaou III and IV) (n = 10) and in 90% of the cases of carcinoma in situ (n = 16). A positive result in 90% of the cases of carcinoma in situ (n = 16). A positive result in 90% of the cases of genital carcinoma was also recorded. In the case of fibroid adenoma (n = 10) and breast tumor (Prechtel I and II) (n = 16), negative results were recorded in 80.8%, whereas in the manifest forms of carcinoma of the breast a positive result of over 95% was shown. As a result of this pilot study, it can be seen that immunological in vitro screening has clinical significance in the early diagnosis of tumors as well as for confirmation of their manifest forms.
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PMID:[Electrophoretic mobility test in the early diagnosis of malignant tumors; findings in the prestages of cervical and breast cancers]. 9 55


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