A Guazzi

University Hospital of Parma, Parma, Emilia-Romagna, Italy

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Publications (39)121.88 Total impact

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    ABSTRACT: Pre-operative cytology in thyroid disease remains the most appropriate diagnostic test for defining the nature of a thyroid nodule before surgical excision. We selected the most recent 825 surgical thyroid procedures performed in our institution from January 2004 to June 2007; 776 were total thyroidectomies, 23 were lobe-isthmectomies, and 26 were radical neck dissections. We distributed the data based on pre-operative cytology. Each cytological diagnosis was compared to results obtained by definitive histology. Tumors were called incidentalomas if they consisted of a neoplastic focus with a low grade of aggressiveness, as demonstrated by dimension <5 mm, non-aggressive histological subtype. Of the 541 cases of benign disease, 417 were confirmed as benign. The other 124 cases are listed as follows: 29 follicular adenoma; 76 papillary carcinoma (35 found as incidentalomas), and 19 follicular carcinoma (3 incidentalomas). Cytology suggestive of papillary carcinoma was correct in 95.2% of cases (119/125). The 135 tumors termed "follicular neoplasm" were staged on pathology thus: 56 adenoma (41.4%), 26 carcinoma (19.2%), 13 (9.6%) absence of follicular proliferation, 38 (28.1%) papillary follicular variant, 2 (1.4%) undifferentiated cells. Medullary carcinomas were both confirmed. The "suspicious group" exhibited no malignancy on fine needle aspiration cytology (12 of 21; 57%). Cytology has good reliability in malignant lesions. Incidental tumors occurring in benign disease have little impact on clinical and surgical management; "follicular neoplasm" posed two problems - the impossibility of identifying the nature of the tumor, as well as the newer difficulty in distinguishing papillary follicular subtype.
    Journal of endocrinological investigation 05/2011; 34(5):345-8. · 1.65 Impact Factor
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    ABSTRACT: Histological typing of non-small cell lung cancer (NSCLC) has an increasing clinical relevance due to the emerging differences in medical treatment between squamous and nonsquamous tumors. However, most NSCLCs are diagnosed in an advanced stage, and the diagnosis is often obtained exclusively by cytology either exfoliative or following fine needle aspiration. We investigated the accuracy of fine needle aspiration cytology (FNAC) in NSCLC typing as compared with histology. Over the period 2000-2009, 1182 transbronchial needle aspirate or transthoracic needle aspirate samples were obtained from patients with suspicious thoracic lesions. In 474 patients, a cytological diagnosis of primary NSCLC was obtained, and 186 (39%) of them (108 transbronchial needle aspirates and 78 transthoracic needle aspirates) received a parallel or subsequent histologic diagnosis on endoscopic biopsy (112) or surgery (74). At cytology, 158 (85%) NSCLC cases were typed (89 adenocarcinoma and 69 squamous cell carcinoma), while 28 (15%) were classified as NSCLC not otherwise specified. At histology, 183 (98%) cases were typed (109 adenocarcinoma, 69 squamous cell carcinoma, 3 adenosquamous carcinoma, and 2 large cell carcinoma), and only 3 (2%) were classified as NSCLC not otherwise specified. Cytological and histological typing was concordant in 137 of 156 (88%) cases (K = 0.755; p < 0.001). The positive predictive value of FNAC in typing NSCLC was 92% for adenocarcinoma and 82% for squamous cell carcinoma. FNAC in expert hands is fairly accurate for typing NSCLC and can be regarded as an acceptable procedure for diagnostic and medical treatment planning purposes in most NSCLC cases, especially when more invasive approaches are unfeasible. In poorly differentiated and doubtful cases, the use of ancillary techniques, such as immunocytochemistry, may be required to improve the diagnostic yield.
    Journal of thoracic oncology: official publication of the International Association for the Study of Lung Cancer 03/2011; 6(3):489-93. · 4.55 Impact Factor
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    ABSTRACT: Epidermal growth factor receptor (EGFR) gene copy number has been proposed as predictor of response to epidermal growth factor receptor tyrosine kinase inhibitors in advanced non-small cell lung cancer (NSCLC). Cytologic and matched histologic samples from 33 primary non-small cell lung cancers were analyzed by fluorescence in situ hybridization (FISH) for epidermal growth factor receptor gene. FISH was positive in 52% and negative in 35% of the 31 matched evaluable samples. Four of 31 (13%) cases were discordant (K = 0.736; p < 0.001). Our data support the feasibility and reliability of epidermal growth factor receptor gene assessment by FISH on cytology.
    Journal of thoracic oncology: official publication of the International Association for the Study of Lung Cancer 04/2010; 5(4):551-3. · 4.55 Impact Factor
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    ABSTRACT: This study aimed to assess the usefulness of multiplanar reformations (MPR) during multidetector-row computed tomography (MDCT)-guided percutaneous needle biopsy of lung lesions difficult to access with the guidance of the native axial images alone owing to overlying bony structures, large vessels or pleural fissures. MDCT-guided transthoracic needle biopsy (TNB) was performed on 84 patients (55 men and 29 women; mean age 65 years) with suspected lung neoplasm by using a spiral MDCT scanner with the simultaneous acquisition of six slices per rotation. We determined the site of entry of the 22-gauge Chiba needle on native axial images and coronal or sagittal MPR images. We took care to ensure the shortest needle path without overlying large vessels, main bronchi, pleural fissures or bony structures; access to the lung parenchyma as perpendicular as possible to the pleural plane; and sampling of highly attenuating areas of noncalcified tissue within the lesion. Diagnostic samples were obtained in 96% of cases. In 73 patients, lesions appeared as a solid noncalcified nodule <2 cm; 11 lesions were mass-like. In 22, the biopsy required MPR guidance owing to overlying ribs (18), fissures (2) or hilar-mediastinal location (2). MDCT MPR images allowed sampling of pulmonary lesions until now considered unreachable with axial MDCT guidance because of overlying bony structures (ribs, sternum and scapulae) or critical location (hilar-mediastinal, proximity to the heart or large vessels). Compared with the conventional procedure, the use of MPR images does not increase the rate of pneumothorax or the procedure time.
    La radiologia medica 10/2008; 113(7):945-53. · 1.46 Impact Factor
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    ABSTRACT: Epidermal growth factor receptor (EGFR) gene copy number obtained by fluorescence in situ hybridization (FISH) has been recently found to predict treatment outcome in non-small cell lung cancer (NSCLC) patients receiving EGFR tyrosine kinase inhibitors. However, it is still unknown whether EGFR status differs in metastases compared with primary NSCLC. In all studies FISH have been performed on histologic material. The possibility to perform FISH analysis on cytologic material obtained by fine-needle aspiration from superficial and visceral metastases would allow us to know the real EGFR status avoiding invasive diagnostic procedures. EGFR gene copy number was analyzed by FISH on fine-needle aspirates obtained from 31 patients with metastatic NSCLC and the results were compared with those obtained on corresponding paraffin histologic sections from the primary tumor. The feasibility of EGFR FISH on cytology was 90% (28 of 31 patients). EGFR FISH was positive in 61% (17 of 28 patients) of the metastases and in 36% (10 of 28 patients) of the primary tumors. Nine of the 28 cases (32%) were EGFR positive on both primary tumor and metastatic site and 10 (36%) were negative on both primary tumor and metastasis. Nine of the 28 cases (32%) showed discordance of primary tumor versus metastasis (McNemar test; p = 0.041). EGFR FISH can be reliably assessed on fine-needle aspirates obtained from NSCLC metastases. We found that EGFR gene copy number is discordant between primary NSCLC and the corresponding distant metastatic sites in a significant proportion of cases. These findings should be considered in future studies designed to elucidate the predictive role of EGFR FISH in NSCLC.
    Journal of thoracic oncology: official publication of the International Association for the Study of Lung Cancer 02/2008; 3(1):18-22. · 4.55 Impact Factor
  • Radiologia Medica - RADIOL MED. 01/2008; 113(7):945-953.
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    ABSTRACT: The case here reported reflects the difficulty in diagnosing meningeal extramedullary hematopoiesis (EMH), which clinically appeared concomitantly with primary cerebral lymphoma and occurred in a patient with HIV infection and severe pancytopenia. Pancytopenia secondary to HIV infection could be hypothesized as a predisposing factor for the ectopic development of hematopoietic tissue outside the bone marrow. Although rare, intracranial EMH should always be considered in the differential diagnosis of headache and other endocranial hypertension symptoms in patients with chronic bone marrow dysfunction.
    Haematologica 06/2007; 92(5):e59-61. · 5.94 Impact Factor
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    ABSTRACT: This study aimed to evaluate the relationship between estrogen receptor (ER) concentration and cytomorphometric parameters in breast carcinoma. Primary breast cancer specimens were both imprinted on cytologic slides and submitted to ER determination with a dextran-coated charcoal method. Patients were stratified by ER levels ranging from 0 to ⩾200 fmol/mg protein. Measurements were performed on cytologic imprint technique smears in five cases from each ER strata, using a computer-assisted tracing device. Nuclear, cytoplasmic, and cellular parameters were measured on 50 cells per case. The cytometric findings were correlated with ER concentrations. A statistically significant correlation between decreasing area (P - 0.011), perimeter (P - 0.015), maximum diameter (P 0.034), minimum diameter (P - 0.008), and volume (P - 0.01) of nuclei and increasing ER levels was found. With regard to whole cells, the following parameters significantly decreased versus increasing ER levels: area (P - 0.038), perimeter (P - 0.046), minimum diameter (P - 0.011), and volume (P - 0.044). A statistically significant relationship between the decreasing cytoplasmic perimeter (P - 0.025), i.e., nuclear plus cellular perimeter, and increasing ER content was found. Cytoplasmic area and nuclear to cytoplasmic ratio (N/C) did not correlate with the amount of ER. In all classes of different ER concentration, cells and nuclei displayed a regular shape closer to a circle than to an ellipse. The results of the current investigation indicate that tumors with higher ER concentration are composed of smaller cells with smaller nuclei than are tumors with lower ER content. Cancer 56: 1972-1976, 1985.
    Cancer 06/2006; 56(8):1972 - 1976. · 5.20 Impact Factor
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    ABSTRACT: To evaluate HER-2/neu amplification by fluorescence in situ hybridization (FISH) (HER-2/neu by FISH) on archival cytologic smears stained with May-Grünwald-Giemsa (MGG) stain. Cytologic specimens from 69 breast cancer lesions (48 primary and 21 metastatic), stained with MGG stain for routine diagnostic cytology, were destained and subjected to HER-2/neu by FISH. Fifteen of the 69 samples were also evaluated by FISH on paired fresh smears. HER-2/neu by FISH was successfully assayed in 25 of the 48 primary tumors and in 15 of the 21 metastatic lesions, corresponding to an overall feasibility of 58%. These cases had been archived between 1 month and 10 years prior to FISH analysis. Eight of the 25 primary and 5 of the 15 metastatic tumors were amplified. In 15 of the 40 evaluable cases, HER-2/neu was also assessed on the corresponding fresh smears: 8 tumors were amplified and 7 unamplified on both destained MGG and fresh smears. HER-2/neu can be detected by FISH on routinely MGG-stained cytologic slides. This approach allows HER-2/neu evaluation whenever histologic sections or fresh cytologic material are not available. In these cases, HER-2/neu assessment on destained cytologic smears plays a role in the selection of targeted therapy.
    Acta cytologica 01/2005; 49(1):27-30. · 0.69 Impact Factor
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    ABSTRACT: BACKGROUND Amplification of the HER-2/neu oncogene has been proposed as a target for antibody-based therapies and as a predictor of chemoresponsiveness in advanced breast carcinoma. Few studies have concentrated on HER-2/neu gene evaluation by fluorescence in situ hybridization (FISH) on distant metastatic sites and none have been performed on cytologic samples. The current study evaluated HER-2/neu amplification by FISH on cytologic samples obtained from distant metastatic lesions of breast carcinoma to update HER-2/neu characterization through a safe and easier procedure than biopsy.METHODS Twenty-two cytologic samples from distant metastases (12 hepatic samples, 4 skin samples, 3 pleural samples, and 3 peritoneal samples) were submitted to HER-2/neu evaluation by FISH. Seventeen corresponding primary breast tumors also were evaluated by FISH on paraffin histologic sections or on destained archival cytologic smears.RESULTSSeven of the 22 metastases (32%) were amplified. Amplification was observed in 4 of the 12 liver metastases, in 1of the 3 ascitic fluid specimens, and in 2 of the 4 skin metastases. In all the three pleural fluid specimens, HER-2/neu was unamplified. Matched results from primary and metastatic lesions were obtained in 14 cases (5 were amplified and 9 were unamplified on both primary and metastatic tumors).CONCLUSIONS The results of the current study emphasized the feasibility and advantages of two rapid and very informative techniques, such as fine-needle aspiration biopsy and FISH. Both procedures were performed to ascertain the malignant nature of a suspicious lesion and to obtain predictive markers for response. Since the advent of trastuzumab, the characterization of the molecular profile in metastatic breast disease has become increasingly important for targeted therapy selection. Cancer (Cancer Cytopathol) 2003;99:310–5. © 2003 American Cancer Society.
    Cancer 10/2003; 99(5):310 - 315. · 5.20 Impact Factor
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    ABSTRACT: Detection of HER-2/neu alterations is increasingly used in breast cancer patients for therapeutic purposes. This study examines the reliability of HER-2/neu immunocytochemical assessment on 66 cytospin smears obtained by fine-needle aspiration biopsy from breast cancer patients. Results were compared with those obtained by both fluorescence in situ hybridization (FISH) on fine-needle aspirate (FNA) and immunohistochemistry (IHC) on matched histologic section. Concordance between immunocytochemistry (ICC) and FISH was 78% and between ICC and IHC was 84%. Discordance mainly concerned seven unamplified cases that resulted positive by ICC and four cases scored negative by IHC but positive by ICC. Simultaneous assessment of HER-2/neu by ICC, IHC, and FISH was available in 24 cases; the concordance was 75%. In this study, the false positivity of immunocytochemical technique represents the major criticism. In our experience, FISH remains the most objective and powerful technique for HER-2/neu assessment on breast cancer FNAs.
    Diagnostic Cytopathology 04/2003; 28(3):142-6. · 1.49 Impact Factor
  • Methods in molecular medicine 02/2003; 75:405-20.
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    ABSTRACT: The HER-2/neu gene is amplified in 20-30% of human breast cancers and has been shown to have prognostic and predictive value for treatment with chemotherapy, hormone therapy and antibodies against the HER-2/neu domain (trastuzumab). The aim of our study was to evaluate the reliability of HER-2/neu determination by fluorescence in situ hybridization (FISH) on fine-needle aspirates (FNAs) from primary breast cancer patients by comparison with the results obtained by FISH and immunohistochemistry (IHC) on the corresponding histological sections. HER-2/neu amplification was determined by FISH on 66 breast cancer FNAs. Twenty-three and 36 corresponding formalin-fixed, paraffin-embedded sections were assayed by FISH and by IHC, respectively, in order to detect HER-2/neu amplification and HER-2/neu protein expression. Twenty-seven per cent (18/66) of breast cancer FNAs showed amplification of HER-2/neu by FISH. Paired results by FISH cytology and FISH histology were available in 22 cases. Concordance was 91% (20/22). Paired results by FISH cytology and IHC were available in 36 cases. Concordance was 92% (33/36). Eighteen of 66 breast cancer FNAs were also submitted to flow cytometric DNA analysis. None of the diploid cases showed HER-2/neu amplification by FISH. Six out of the eight aneuploid cases were amplified and two were polysomic. HER-2/neu gene amplification can be reliably estimated by FISH on breast cancer FNAs and a good correlation has been found between FISH and IHC results from the corresponding histological sections.
    Annals of Oncology 10/2002; 13(9):1398-403. · 7.38 Impact Factor
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    ABSTRACT: Computed tomography (CT) guided fine needle aspiration biopsy (CT-guided FNAB) represents the procedure of choice for diagnosing peripheral primary lung cancer before surgery. The aim of the present study was to assess the reliability of the immunocytochemical evaluation of biological parameters and DNA flow cytometry on cellular material obtained from non-small cell lung cancer (NSCLC) patients by CT-guided FNAB. Thirty consecutive CT-guided FNABs obtained from NSCLC patients were submitted both to the immunocytochemical evaluation of p53, Ki67, bcl-2 and to flow cytometric DNA analysis. p53, Ki67 and bcl-2 were assessable in 60% (18/30), 53% (16/30) and 48% (10/21) of the cases, respectively. Flow cytometric DNA analysis was performed in 19 out of the 30 cases and 74% (14/19) of the histograms were evaluable. Cytofluorimetric S-phase fraction (SPF), was obtained in 57% (8/14) of the cases. The results of the current study suggest that CT-guided FNAB from primary NSCLC patients may represent an effective practice for the evaluation of biologic parameters and could be useful as a preoperative procedure. The role of neoadjuvant chemotherapy in operable NSCLC is still under debate. We suppose that in the future the presurgical characterization of NSCLC could suggest the opportunity of a neoadjuvant systemic treatment aimed to improve the clinical outcome. Moreover, in locally advanced or metastatic NSCLC immunocytochemistry could help to predict the response to chemotherapy and/or radiotherapy, avoiding ineffective treatments and supporting the development of more rational therapies.
    Lung Cancer 04/2002; 35(3):243-7. · 3.39 Impact Factor
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    ABSTRACT: Breast cancer in pregnancy involves a psychosocial, religious, multidisciplinary medical decision. From 1991 the Authors have surgically treated six patients affected by breast cancer in pregnancy. The Authors, in this papers, review analysing current therapeutic approach for this disease.
    Il Giornale di chirurgia 06/2001; 22(5):169-70.
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    ABSTRACT: BACKGROUND Fine-needle aspiration biopsy (FNAB) is a well-documented procedure for the diagnosis and biologic characterization of breast carcinoma. In order to compare the immunocytochemical expression of biologic parameters on cytology and on histology, estrogen receptor (ER) and progesterone receptor (PgR) status, p53 protein expression, and Ki67 growth fraction were evaluated on presurgical fine-needle aspirates (FNAs) from breast carcinoma patients and on the corresponding surgical samples prior to any systemic therapy.METHODSFNAs were performed on 104 patients with primary breast carcinoma at the time of diagnosis and subjected to immunocytochemical evaluation of ER, PgR, p53, and Ki67. The same parameters were immunohistochemically evaluated on the corresponding paraffin embedded sections.RESULTSER, PgR, p53, and Ki67 were evaluable on FNAs and on paired tissue sections in 100, 97, 68, and 84 cases, respectively. Concordance between cytology and histology was 89% for ER, 78% for PgR, 79% for p53, and 70% for Ki67.CONCLUSIONS The concordance between the results of immunocytochemical evaluation of ER, PgR, p53, and Ki67, on both cytology and histology, underscores the reliability of the biologic characterization of breast carcinoma by FNAB. This approach could be particularly useful in predicting prognosis and response to treatment in patients who are candidates for neoadjuvant chemotherapy and/or endocrine therapy. Cancer (Cancer Cytopathol) 2000;90:61–6. © 2000 American Cancer Society.
    Cancer 11/2000; 90(1):61 - 66. · 5.20 Impact Factor
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    ABSTRACT: BACKGROUND Fine-needle aspiration (FNA) biopsy has been used increasingly in the diagnosis and biologic characterization of breast carcinomas in patients who receive preoperative chemotherapy. Because proliferative activity of breast carcinoma has been shown to be of prognostic significance, the authors compared immunocytochemical Ki-67 growth fraction and flow cytometric S-phase fraction (SPF), both evaluated on FNA samples.METHODS The proliferative activity of 134 FNA samples from primary breast carcinoma patients was studied using both immunocytochemistry with the monoclonal antibody Ki-67 and SPF determined by DNA flow cytometry.RESULTSKi-67 and SPF were evaluable in 114 and 107 cases, respectively, and both were evaluable in 95 cases. Of the 134 FNA samples studied, 37% were diploid and 63% were aneuploid. The distribution of both Ki-67 and SPF was different in diploid and aneuploid tumors. The median Ki-67 value as well as the median SPF were significantly higher in aneuploid versus diploid tumors (P < 0.001). Median Ki-67 and SPF values were used to discriminate between low versus high proliferating tumors. The overall concordance between Ki-67 and SPF was 75% (P < 0.001). A good correlation was found between Ki-67 and SPF (correlation coefficient = 0.72; P < 0.001).CONCLUSIONS The results of the current study suggest that Ki-67 growth fraction and SPF determined by FNA may be used as measurements of the proliferative activity of breast carcinoma. The authors recommend these determinations be used as preoperative procedures in patients with a cytologic diagnosis of breast carcinoma who are candidates for neoadjuvant chemotherapy and/or endocrine therapy. Cancer (Cancer Cytopathol) 1997; 81:287-92. © 1997 American Cancer Society.
    Cancer 11/2000; 81(5):287 - 292. · 5.20 Impact Factor
  • Lung Cancer 09/2000; 29(1):210-210. · 3.39 Impact Factor
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    ABSTRACT: A number of biological and predictive markers of non-small cell lung cancer (NSCLC) have been sought, but these have so far been mainly evaluated on surgically resected specimens. Given that fine needle aspiration biopsy (FNAB) is being increasingly used in the diagnosis of NSCLC, its application could be extended to the immunocytochemical detection of biological parameters at the time of diagnosis before surgery. In order to assess the reliability of estimating biological markers on fine needle aspirates (FNAs) from NSCLC, the aim of this study was to compare Ki67 growth fraction, p53 and bcl-2 protein expression as revealed by the immuncytochemical assessment of FNAs obtained from surgical samples with the immunohistochemical results obtained from the corresponding histological sections. FNAs were performed on surgical specimens obtained from 29 NSCLC patients. Ki67, p53 and bcl-2 were cytologically and histologically evaluable in respectively 25, 27 and 19 cases. Concordance between FNAs and corresponding paraffin sections was 84% for Ki67, 93% for p53 and 95% for bcl-2. All of the specimens whose biological parameters were studied by immunocytohistochemistry also underwent flow cytometric DNA analysis of FNAs taken from fresh surgical specimens. Of the 29 cases, 22 were aneuploid and seven diploid. The S-phase fraction (SPF) was evaluable in 62% of cases. Comparison of SPF results on FNAs with Ki67 values evaluated on the corresponding histologic and cytologic specimens, revealed a significant correlation only with histology. Good reproducibility was also found in relation to the immunocytochemical results obtained on FNAs from different areas of the same tumour, showing that tumour heterogeneity does not affect the method. The concordance between the immunocytochemical and immunohistochemical results suggests that FNAB may be a reliable procedure for the biological characterization of NSCLC. Given its limited invasiveness, FNAB could be used in vivo for the preoperative assessment of biological parameters in patients with operable or metastatic NSCLC.
    Lung Cancer 08/2000; 29(1):33-41. · 3.39 Impact Factor
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    ABSTRACT: Fine-needle aspiration biopsy (FNAB) is a well-documented procedure for the diagnosis and biologic characterization of breast carcinoma. In order to compare the immunocytochemical expression of biologic parameters on cytology and on histology, estrogen receptor (ER) and progesterone receptor (PgR) status, p53 protein expression, and Ki67 growth fraction were evaluated on presurgical fine-needle aspirates (FNAs) from breast carcinoma patients and on the corresponding surgical samples prior to any systemic therapy. FNAs were performed on 104 patients with primary breast carcinoma at the time of diagnosis and subjected to immunocytochemical evaluation of ER, PgR, p53, and Ki67. The same parameters were immunohistochemically evaluated on the corresponding paraffin embedded sections. ER, PgR, p53, and Ki67 were evaluable on FNAs and on paired tissue sections in 100, 97, 68, and 84 cases, respectively. Concordance between cytology and histology was 89% for ER, 78% for PgR, 79% for p53, and 70% for Ki67. The concordance between the results of immunocytochemical evaluation of ER, PgR, p53, and Ki67, on both cytology and histology, underscores the reliability of the biologic characterization of breast carcinoma by FNAB. This approach could be particularly useful in predicting prognosis and response to treatment in patients who are candidates for neoadjuvant chemotherapy and/or endocrine therapy.
    Cancer 03/2000; 90(1):61-6. · 5.20 Impact Factor

Publication Stats

301 Citations
121.88 Total Impact Points

Institutions

  • 1994–2010
    • University Hospital of Parma
      Parma, Emilia-Romagna, Italy
  • 1998
    • Università degli studi di Parma
      Parma, Emilia-Romagna, Italy
  • 1988
    • Ospedale Maggiore di Lodi
      Lodi, Lombardy, Italy