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U Caliceti

Publications and source records attributed to U Caliceti.

At least 19 recordsLinked to original sources
PubMed1997

Cell proliferation as an independent predictor of survival for patients with advanced nasopharyngeal carcinoma.

Commonly used clinical and pathologic criteria are often of limited value in predicting the outcome of patients with undifferentiated nasopharyngeal carcinoma, and new parameters related to the biology of growth of neoplastic cells are still required for better definition of the aggressiveness of these tumors. The prognostic significance of DNA ploidy, measured by image cytometry on isolated cells, and of the mitotic index, proliferating cell nuclear antigen, and p53 protein, all measured by image cytometry in histologic sections, were evaluated on archival tumor tissues from 53 patients with Stage III or IV nasopharyngeal carcinomas. Patients were staged according to the criteria of the International Union Against Cancer and were irradiated according to a conventional radiotherapy schedule. No significant associations were found between biologic parameters and clinical features. Only the stage and the mitotic index were related to patient survival, and, when examined in a proportional hazard regression analysis, both provided independent information. When patients with compromised skull and/or cranial nerves (T4 tumors), who had a very short survival, were eliminated from the analysis, only the mitotic index and proliferating cell nuclear antigen allowed discrimination of a subset of patients with poor prognoses. This study shows that the assessment of cell proliferative activity can provide useful information for better predicting the clinical course of high-risk patients with nasopharyngeal carcinomas and improve therapeutic strategies.

Adolescent↗
PubMed1996

[External radiotherapy in early stage squamous cell carcinoma of the supraglottic larynx. Report of 28 cases].

The Authors reviewed a group of 28 pts with early-stage supraglottic carcinoma (T1-T2N0), classified according to UICC (1987), and treated exclusively with radiotherapy (RT) between 1980 and 1991. Until 1990 RT was employed for such tumors when surgery was refused or controindicated, while since 1991 primary irradiation (with surgery in reserve) has been considered the treatment of choice. The total dose ranged from 66 to 70 Gy on the larynx and up to 50 Gy on neck nodes. RT was applied in a daily fraction of 2 Gy five times a week. No significant early complications were observed. Only 1 pt showed residual cronical oedema in the arytenoid region. In none of the pts was tracheostomy necessary. The local control rate obtained after 30 months was 85.7% (24/28). Salvage surgery (horizontal supraglottic laringectomy, HSL) was performed in 3 out of 4 pts with local failure and achieved complete control of the disease. In the last pt the surgery was controindicated because of poor general health conditions. The actuarial survival rate after 5 years is 86.2%. The present series was compared to a group of 152 pts with T1-T2N0 supraglottic cancer treated surgically (HSL) at the same Istitution. In these pts local control and the actuarial survival rates are 85.6% and 89% respectively. According to recent Literature data, the present findings confirm that RT may be administered for the treatment of selected early stage (T1-T2N0) supraglottic squamous cell carcinoma of the larynx with oncologic results equivalent to those obtained with radical surgery. The importance of imaging techniques (TC, MRI) in the correct staging of the tumor is emphasised.

Aged↗
PubMed1996

[Cytokeratin and vimentin expression in laryngeal squamous cell carcinoma].

The present study employed immunohistochemical methods to study the cytokeratin (ck) and vimentin expression in 40 cases of laryngeal squamous cell carcinoma. Specific monoclonal isoform antibodies and mixes of antibodies vs. a specific molecule were used in order to determine what cytokeratins were present as accurately as possible. In this sampling two ck patterns were identified based on whether the ck pair 8/18 was present or not. The ck 8/18 positive cases were further broken down into three sub-groups based on the expression of one of the following: the ck 4/13 pair, ck 1/10 pair or vimentin. A statistically significant relationship was found between these sub-groups, the site at which the neoplasm arose and the tendency toward regional metastases. Moreover, it was found that the presence of ck 13 in a squamous cell carcinoma is correlated with the less aggressive forms, as indicated in the literature.

Adult↗
PubMed1995

[Radiotherapy of stage T1 carcinoma of the glottis. Analysis of prognostic factors in 154 patients].

A retrospective study was carried out on a series of 154 patients affected with vocal cord cancer in stage T1 treated with definitive radiotherapy April, 1979, to November, 1991. According to the 1992 TNM classification (UICC), 121 patients were classified as stage T1a and 33 patients as stage T1b. All patients were treated using parallel opposed fields of a 60 cobalt unit. Field size ranged from 16 to 30 square centimeters and the dose from 4400 to 7000 cGy, but only 15 patients received less than 6400 cGy. All patients were treated with once-daily fractionation (200 cGy/day). Follow-up ranges from 25 to 123 months; the median is 63 months. We observed 14 local recurrences (9.0%), all but one within 36 months from the end of treatment. Ten of 14 patients (71.4%) were rescued by surgery (8 patients underwent total laryngectomy and 2 conservative surgery); 13 patients were lost for intercurrent deaths. The incidence of recurrences is 7.4% for T1a patients (9/121) and 15.1% for T1b patients (5/33). The total dose does not seem to be related to relapse rate since recurrences were found in 6.6% of patients after a dose < 6400 cGy and in 9.3% of patients who had received higher doses. In our experience, field size did not affect, treatment results (< 25 cm2: 7.5% recurrences, > 25 cm2: 10.7%). Besides lesion volume, the main prognostic factor was overall treatment time. The incidence of failure was 3 times lower (5.8%) in the patients who completed the treatment within 7 weeks than in the patients whose treatment lasted more than 8 weeks (16.6%).

Adult↗
PubMed1995

[Extramedullary plasmocytoma (EMP) of the head and neck: a series of 22 cases].

Plasmacytoma is a rare neoplastic disorder arising from B-cell series lymphocytes. It can develop in three clinical variants: a) Multiple Myeloma (M.M.); b) Solitary Plasmacytoma of the bone; c) Extramedullary Plasmacytoma (EMP). EMP generally occurs in the submucosal tissue of the upper airways (80% of cases). This paper reports 22 cases of EMP of the head and neck observed in the last 20 years and reviews pertinent Literature. Four of our cases were located in the nasopharynx, four in the oropharynx and five in naso-sinusal sites. More rarely, the lesion occurred in the larynx (2 cases) or in the oral cavity (3 cases). In 4 patients multiple localizations in the upper airways were observed. Full evaluation was carried out in order to exclude disseminated disease. With the exception of 2 cases which were surgically treated, radiotherapy (RT) represented the treatment of choice in all patients, with doses ranging from 36 to 58 Gy. In 9 cases RT was administered after complete surgical resection. Follow-up time ranged from 13 to 167 months (mean 69.6). A partial response after treatment was observed in 4 cases. In only two of these cases neoplastic residue was observed (further RT allowed complete remission of the disease). In the other two cases, residual masses consisted in amyloid deposits. Three patients developed disseminated disease (MM) after a disease-free period ranging from 3 to 6 years. Five-year actuarial disease was 92%. Although surgery is generally considered a diagnostic tool, in our opinion local disease should always be removed surgically when surgery produces low morbidity. Surgical debulking of the lesion can increase the probability or local radiotherapeutic control.

Adolescent↗
PubMed1992

A few remarks on the morphogenesis of the larynx.

After having reviewed the principal theories regarding the development of the larynx the authors performed a study on the morphogenesis of the above structure using four horizontally- and sagitally-sectioned human embryos. The conclusion of a study of these sections is that the LC constitutes the primordium of the laryngeal vestibule. From its lateral margin, caudally (Stage 19, Carnegie System), the primitive ventricles begin to form, while in the final stages the EL extends caudally enclosing a small cephalic infraglottic area and therefore completely separating the IG from the LC. Such findings in our opinion would confirm a different embryological derivation of the laryngeal cavity above and below the glottis.

Gestational Age↗
PubMed1991

5-fluorouracil + folinic acid with cisplatinum and bleomycin in the treatment of advanced head and neck squamous cell carcinoma.

Thirty-six patients with advanced squamous cell carcinoma of the head and neck (SCCHN) were treated with a regimen including cisplatinum (CP) 30 mg/m2 i.v., 5-fluorouracil (5-FU) 500 mg/m2 i.v. bolus, folinic acid (FA) 200 mg/m2 i.v. in a continuous one-hour infusion, and bleomycin (B) 15 mg i.m. on the first and second days and repeated every 28 days. Thirty-three patients (25 with recurrent disease and 8 untreated) are evaluable for objective response. Of these, 4 (12%) achieved CR and 15 (45%) PR. All of the untreated patients responded. The mean duration of response in the patients with recurrent or metastatic disease was 5.5 months (range 2-10+). Remission of symptoms, such as pain and dysphagia, was obtained in 58% and in 44%, respectively. Subjective remission occurred almost exclusively in objectively responsive patients. The major side effects were leukopenia (55%) and nausea/vomiting (58%). This regimen is active in the treatment of advanced SCCHN. The quality of life may be improved in responsive patients.

Adult↗
PubMed1990

Carcinoid tumours of the larynx: report of two cases.

Carcinoid tumour of the larynx is extremely rare. The increasing number of these lesions reported is due to the application of ultrastructural and immunological methods in the diagnosis. Two new cases of this malignant neoplasm are presented and discussed with particular reference to the difficulty in distinguishing carcinoids from other tumours of the larynx. The accurate pathological identification of the tumour is essential for treatment and prognosis.

Adult↗
PubMed1989

The use of microfluorometry to study DNA in nasopharyngeal carcinomas: a possible prognostic tool?

A microfluorometric method was used to determine the nuclear DNA content in the nasopharyngeal carcinomas (NPC) of 25 patients treated before 1983. Eleven patients are still alive with no evidence of disease (NED), while the rest died of their disease (DOD). All of the patients received a cycle of radiotherapy, while some also received chemotherapy or neck dissections. The neoplastic cells studied were taken from the original biopsy blocks, deparaffinized, isolated by enzymatic treatment and mechanical fragmentation, and then Feulgen-stained. The cytofluorometric measurement was carried out by a microphotometer equipped for fluorescence excitation and connected to a computer. This method allowed us to construct a histogram of the DNA content in the neoplastic cells. Different neoplastic classes were identified and represent the heteroclonality of the tumor, which can be expressed by the heteroclonality index (HCT). From the collected data it appears that the NED patients all had a low HTC (less than 1) and only 7 of the DOD patients had low HTCs (less than 1). Six of the DOD patients with a low HTC were in advanced stages of their tumor at the time of diagnosis, while the remaining patient did not complete his treatment. Our results show that the DNA analysis of the NPC cell population may offer a useful tool in predicting the biological behavior of this tumor and also improving its treatment.

Adult↗
PubMed1988

Specific Epstein-Barr virus serological response in patients with nasopharyngeal carcinoma detected by immunoblotting.

The specific humoral immune response against Epstein-Barr virus (EBV) antigens in patients with nasopharyngeal carcinoma (NPC) was compared to that of patients with infectious mononucleosis (IM) and other EBV-seropositive subjects using immunoblotting technique. Almost all sera from EBV serologically associated NPC reacted reproducibly with a major group of polypeptides (four to six) of early antigen (EA) complex with molecular weights ranging from 50 kD to 58 kD, and with some additional polypeptides. Sera from IM-patients reproducibly recognized only one polypeptide of 50 kD belonging to the major group of polypeptides of EA-complex. Sera from patients with other types of head and neck cancer and relatively high levels of IgG antibody against viral capsid antigen (VCA) and EA did not react reproducibly with any of the EBV-associated proteins.

Carcinoma↗
PubMed1988

Treatment of advanced head and neck tumors with PEV-B regimen: a pilot study.

Thirty-seven patients with advanced head and neck tumors were treated with a polychemotherapy regimen (PEV-B: platinum 30 mg/m2 i.v., epirubicin 30 mg/m2 i.v., etoposide 75 mg/m2 i.v. on days 1 and 2 every 28 days, and bleomycin 15 mg i.m. weekly up to the total dose of 300 mg). All but 7 patients were pretreated with surgery and/or radiotherapy. Thirty-six patients were evaluable for response. Partial response (PR) was observed in 19 cases (53%), no change (NC) in 13 cases (36%) and progression (P) in 4 cases (11%). The median duration of PR was 5 months. The most frequent side-effects were leukopenia (78%), vomiting (57%) and alopecia (46%). The median duration of survival was 8 months for the responders and 5 months for the non-responders.

Adult↗
PubMed1987

Mucoepidermoid tumour of the parotid gland: a very difficult prognostic evaluation.

The correct management of mucoepidermoid tumours is still debatable because of their unpredictable biological course. The issue discussed is that of identifying biological characteristics of these tumours which may have predictive value. Sixteen patients with a mucoepidermoid tumour of the parotid gland, treated at the ENT Clinic of Bologna University over a 15-year period, were reviewed. The follow-up of each patient has been related to the surgical management, in order to evaluate whether superficial parotidectomy provides adequate treatment. No prognostic differences were noted between total and superficial parotidectomy when the latter was clinically appropriate. The histopathological specimens from these patients were reviewed in an attempt to correlate the histological grade of tumour with the course of the disease. Our data suggest that histological evaluation of malignancy alone is insufficient for accurate prognosis. We think that the clinical presentation (facial nerve palsy, pain, etc.) predicts the prognosis with greater accuracy.

Adolescent↗
PubMed1987

Anti-EBV antibody titers in Italian patients with nasopharyngeal carcinoma.

In September 1983 we started the serological examination of all patients with a nasopharyngeal carcinoma (NPC) to evaluate whether the association between NPC and EBV is present even in Italy. At present we have data from 60 patients. This paper confirms the presence of the antibodies to EBV in 75% of Italian NPC patients with a significant difference in respect to control groups. Thus, we consider this serological test as a good marker for NPC and especially useful in cases presenting a difficult diagnosis. In our brief experience it seems that the same test is not so useful to indicate healing, stationariness, or the initial relapse of the tumor.

Antibodies, Viral↗
PubMed1987

[Radiotherapy of carcinoma of the glottis in the initial stage].

The control of early glottic cancer is equally satisfactory with either surgical resection or radiation therapy; this last method gives the patient good functional results. During the period from 1/1978 to 12/1985, 73 patients with early glottic carcinoma (T1 N0 M0) were treated in the Institute of Radiotherapy L. Galvani, University of Bologna; 45 were stage T1a (tumour limited to one vocal cord) and 28 were stage T1b (tumour of both vocal cords or involving anterior commissure); radiation treatment utilised a 60Co machine and 5 x 5 cm fields; the median dose was 67.2 Gy (range 50-76) with conventional fractionation. Ten patients had local recurrence; the median time of recurrence was 13.4 months; 9/10 were treated by surgery and 2/10 died, so the overall control by radiotherapy with surgery in reserve was 100% in T1a tumours and 90.6% in T1b ones. The 5-years disease free survival rate was 93.1% in T1a tumours and 69% in T1b; lesions involving anterior commissure had the worst prognosis, independent of the dose and time-dose factor (3/10 recurrences in the group treated with TDF less than 110 and 4/18 recurrences in the group with TDF more than 110).

Adult↗
PubMed1986

Evaluation of antibodies to Epstein-Barr virus in Italian patients with nasopharyngeal carcinoma.

An association of Epstein-Barr virus (EBV) with nasopharyngeal carcinoma (NPC) has been established serologically in Italian patients. The finding of IgA antibodies to EBV-capsid antigen (VCA) and to early antigen (EA) showed a high degree of correlation for patients with NPC, thereby confirming previous reports. In addition, when considered together, IgA anti-VCA and IgG anti-EA antibody titres appeared to distinguish NPC-patients from those in control populations. Poorly differentiated and undifferentiated carcinomas with lymphoid cellular infiltrations showed the highest frequency of association with positive EBV serological tests.

Antibodies, Viral↗