Search PubMed⌕ Search

Biomedical subjects

E Fulcheri

Publications and source records attributed to E Fulcheri.

At least 73 records · Page 4Linked to original sources
PubMed1988

Uterine sarcomas: a clinicopathologic study.

A series of 48 cases with initial diagnosis of uterine sarcoma was reviewed to evaluate the validity of histologic criteria. The influence of pathologic and clinical prognostic factors and treatment modalities were examinated. The 32 patients included in this retrospective study after pathologic review had 5-year overall survival rate of 13.1%. Surgical pathological staging was demonstrated to be a significant prognostic factor, since patients with FIGO stage I-II disease had 33.5% actuarial survival rate whereas no patient with stage III-IV disease was alive at 37 months. Histological type, age and menopausal status did not significantly influence survival. Presence of heterologous elements and lymphovascular invasion were associated with a poor prognosis in the subgroup of patients with mixed mesodermal tumors. Median survival for patients receiving adjuvant treatment was 25 months compared to 19 months for those undergoing no adjuvant therapy.

Adolescent↗
PubMed1986

O-acylated sialic acid variants in mucinous tumours of the ovary.

O-acylated sialic acid variants (site 8) can be demonstrated histochemically by the PB/KOH/PAS method. They are secreted by goblet cells of the lower gastrointestinal tract, by colorectal adenocarcinomas, and by their metastases. Since the metastases are positive only when the primary tumour is positive, O-acylated sialomucins can be considered to be specific markers of colorectal adenocarcinomas if identified in metastases of a tumour of unknown origin. In our histochemical study we evaluated 29 mucinous cystomas of the ovary (23 benign and 6 malignant). We found that six cases were positive to PB/KOH/PAS. The positivity was observed in a limited number of cells and only in areas which presented an intestinal type epithelium. It was also more evident in malignant cystomas than in benign ones. We therefore think that the PB/KOH/PAS positivity can not only be considered a marker of colorectal adenocarcinomas, but also of all neoplasms which originate from an intestinal epithelium or appear to an "intestinal type epithelium".

Adenocarcinoma, Mucinous↗
PubMed1986

Recurrent digital fibromatosis of childhood. An ultrastructural and immunohistochemical study of two cases.

Two cases of recurrent digital fibromatosis of childhood were studied by electron microscopy and immunohistochemistry, using rabbit anti-actin antisera. The tumor cells were typical myofibroblasts, containing inclusion bodies and bundles of microfilaments. Immunohistochemistry showed the presence of actin in these cells, thus proving the myofibroblastic nature of the tumors. Inclusions were negative or showed a weak annular positivity. A possible explanation of these findings is discussed.

Actins↗
PubMed1986

O-acetylated sialic acid variants in intestinal glandular metaplasia of the urinary tract.

Two cases of chronic cystitis, two of chronic ureteritis, one of chronic pyelitis and two transitional cell carcinomas of the urinary tract showed glandular metaplasia or focal mucin production. Positive staining for O-acetylated sialic acid variants (sites 7 and 8) detected by the PB-KOH-PAS method was found in the two cases of cystitis, in one of chronic ureteritis and in one of chronic pyelitis. Positive staining was observed only in areas showing an intestinal type of metaplasia and in which goblet cells and argyrophil cells were also identified. These findings taken together with earlier studies on ovarian cystadenomas lead the authors to believe that O-acetylated variants are markers of an intestinal type of epithelium. Evaluation of O-acetylated sialomucins may be useful in further studies on the histogenesis of primary adenocarcinomas of the bladder.

Adult↗
PubMed1986

Immunohistochemical study of carcinoembryonic antigen, epithelial membrane antigen, and secretory immunoglobulin system in the large bowel adenoma-carcinoma sequence.

To identify parameters for the malignant potential of large bowel adenomas, we used the avidin-biotin-peroxidase complex (ABC) technique. Patterns of carcinoembryonic antigen, epithelial membrane antigen, IgAs, and secretory component in 31 tubular, tubulovillous, and villous adenomas with different grading of dysplasia (mild, moderate, severe) and with early cancer were studied. All markers showed different degrees of staining intensity and various cellular localizations. We found that these variations might be related to dysplasia grading. Adenoma size did not influence the marker patterns. IgAs seemed to be the more selective among the markers studied. Our results suggested a dysplasia-carcinoma sequence instead of an adenoma-carcinoma sequence concept.

Adenocarcinoma↗
PubMed1986

Patterns of mucous secretion in normal and pathological conditions of the endocervix.

20 specimens of normal endocervix, 30 of chronic cervicitis, 20 of endocervical polyps and 10 of adenocarcinomas were histochemically investigated in order to assess their mucin pattern. Diastase periodic acid-Schiff (D-PAS), Alcian blue pH 2.5 (AB), High iron-diamine (HID) and HID followed by Alcian blue pH 2.5 (HID-AB) were used. Both the superficial and glandular epithelium of the normal endocervix contained abundant amounts of neutral mucins. Generally sialomucins were scarce and predominant over sulphomucins: the latter were in some cases absent in the proliferative phase of the menstrual cycle and increased in the secretory phase. In chronic cervicitis a slight amount of sulphomucins in the residual glandular epithelium, especially in areas presenting severe inflammation, pseudoerosion, or both was observed. Nabothian cysts mainly contained sulphomucins. In the endocervical polyps, the mucin pattern was various. In adenocarcinomas mucin secretion was usually scanty and mixed with a predominance of sialomucins. Therefore resulted: the mucin pattern of the normal endocervical epithelium is related to the menstrual cycle; the histochemical evaluation of mucous secretion, presently doesn't seem to be helpful in differentiating endocervical from endometrial adenocarcinomas.

Adenocarcinoma↗
PubMed1985

Primary signet-ring carcinoma of the large bowel. Report of nine cases.

Nine cases of signet-ring carcinoma have been observed from among 800 consecutive histologic cases diagnosed as adenocarcinoma of the colon during a period of 10 years (0.9%). This group of nine patients (Group A) has been matched for sex, age, and stage with a group of 45 patients affected by ordinary carcinoma of the colon (Group B). Clinical and histologic parameters, including symptoms, primary tumor site, free interval from primary surgery, histochemical investigation of intracytoplasmic mucins, and survival, were evaluated. The results of this investigation showed no clinical differences between signet-ring carcinoma and ordinary carcinoma, and no statistically significant results were observed regarding the frequency of local recurrence and actuarial survival.

Adenocarcinoma, Mucinous↗
PubMed1985

Presence of intra-mucosal smooth muscle cells in normal human and rat colon.

Intramucosal smooth muscle cells surrounding the crypts and originating from the muscularis mucosae were observed in normal human and rat colon. Immunohistochemical techniques, using anti-desmin and anti-actin antibodies, along with ultrastructural procedures were employed to investigate the nature and distribution of these cells. Desmin-positive and actin-rich smooth muscle cells sprouting from the muscularis mucosae into the lamina propria and surrounding the crypts were observed both in rat and human colon. The intramucosal smooth muscle cells may play an important role in some pathophysiological conditions.

Actins↗
PubMed1985

Anti-carcinoembryonic antigen sera acquiring higher tumor specificity by absorption with a plasma factor.

A factor reacting with antisera against carcinoembryonic antigen (CEA) was isolated from healthy donors' plasma. Ten different antiCEA sera were absorbed with this plasma factor (P-factor): the antiCEA activity was mostly, or completely, removed in 8 sera. Only 2 of these absorbed sera (here defined as type A) still presented a high CEA binding activity by radioimmunoassay and, on tissue sections, selectively stained most of the colonic adenocarcinomas and areas of severe dysplasia in neoplastic adenomas. Contrary to the behaviour of the antisera against the P-factor, of the unabsorbed antiCEA sera, of a commercially available antiserum and of a monoclonal antibody, the P-absorbed type A antiCEA sera appeared unreactive with normal colonic mucosa and granulocytes. Absorption with the P-factor allows us to obtain antiCEA sera with higher tumor specificity.

Adenocarcinoma↗
PubMed1984

Mucin profiles in the mucosa adjacent to large bowel non-adenocarcinoma neoplasias.

Morphological features and mucin secretion patterns were investigated in the colonic mucosa adjacent to or overlying mesenchymal or primary epithelial neoplasias, other than adenomas and adenocarcinomas. The material included 15 cases of non-adenocarcinoma tumours examined during 1978-1981. Increased sialomucins and morphological features similar to those described in the so-called 'transitional' mucosa adjacent to primary colorectal adenocarcinomas were observed in only two cases. In contrast our previous studies have demonstrated 'transitional' profiles in 98% of adenocarcinomas.

Adult↗
PubMedDate not supplied

Morphologic and biologic studies on ten cases of verrucous carcinoma of the vulva supporting the theory of a discrete clinico-pathologic entity.

Ten cases of verrucous carcinoma (VC) of the vulva diagnosed from January 1989 to December 1996 were studied. Patient age ranged from 50 to 83 years. The following examinations were performed on buffered formalin-fixed material: 1). in situ DNA hybridization, probes HPV 6/11, 16/18, 31/35/51; and 2). a series of immunohistochemical stainings to demonstrate wild and mutant types of the p53 protein, cytokeratin expression and pattern distribution (AE1 and AE3), and proliferating pattern (MIB 1). In situ DNA hybridization analysis for human papillomavirus 6/11, 16/18, 31/35/51 was negative in all cases. Wild and mutant types of p53 protein transcribed from related oncosuppressor gene were not detected. Keratins AE1 and AE3 showed a peculiar distribution pattern, that is, AE1 was uniformly positive in the surface and intermediate layers, while it was almost negative in the basal layer which-on the contrary-was mainly positive to AE3 keratins. MIB-1 highlighted 10-40% of proliferating cells; however, in all cases, 70-80% of MIB-1 positivity was found in the basal layer of the neoplastic epithelium. These results seem to show the morphofunctional and growth characteristics of neoplastic epithelium, thus stressing that VC should be considered as a discrete entity in vulvar tumors.

Aged↗