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Biomedical subjects

G Maggi

Publications and source records attributed to G Maggi.

At least 55 records · Page 3Linked to original sources
PubMed1997

Use of 111In-DTPA-octreotide scintigraphy in the diagnosis of neuroendocrine and non-neuroendocrine tumors of the lung. Preliminary results.

BACKGROUND: The authors report their preliminary experience and results of the use of 111In-DTPA-octreotide scintigraphy (octreoscan) in the staging of neuroendocrine and non-neuroendocrine tumors of the lung. MATERIALS AND METHODS: From July 1995 to May 1996 twenty-six scintigraphic studies were performed in patients affected by lung cancer at the Department of Thoracic Surgery and at the Service of Nuclear Medicine of the University of Turin. RESULTS: Scintigraphy made it possible to detect the lesion in all the patients affected by neuroendocrine tumors and in 63.2% of the patients affected by non-neuroendocrine neoplasm of the lung. Scintigraphy also revealed mediastinal lymphnodal metastases in patients in which thoracic CT scan was negative: this result was confirmed by postoperative TNM. CONCLUSIONS: The authors stress the importance of 111In-DTPA-octreotide scintigraphy in a correct procedure of staging of neuroendocrine and non-neuroendocrine tumors of the lung and in the follow-up of neoplastic patients.

Adenocarcinoma↗
PubMed1997

[Video laparoscopic cholecystectomy in acute cholecystitis: when,how and why?].

Acute cholecystitis has been previously considered as contraindication for laparoscopic cholecystectomy (LC), but recently, several studies have demonstrated that the laparoscopic approach can also be effective in such cases, although iatrogenic lesions of the biliary tree have been increasingly reported. Aim of this study was to verify the effectiveness of LC in patients presenting with acute cholecystitis on the basis of preoperative and intraoperative findings, postoperative mortality and morbidity, in order to assess those conditions which still can be considered as contraindications for LC. From September 1992 to January 1995, 133 patients have been consecutively admitted and operated for LC. 46 cases (36.5%) had histologically proven acute cholecystitis. Moreover we have compared preoperative date (clinical history, laboratory findings, Rx and ultrasound evaluation) with intraoperative findings to assess a correlation with intraoperative difficult conditions evaluated according to De Manzini score. Our results demonstrate that clinical data significantly correlate with intraoperative difficult situations. Hepatobiliary ultrasound also has shown good correlation between the thickness of gallbladder wall and difficult operations (73.9 sensibility-70.1 specificity). Therefore, in patients with clinically severe acute cholecystitis, and thickened gallbladder demonstrated by ultrasound it is very likely that the surgeon will experience difficult in intraoperative situations. In these conditions laparoscopy may be considered mainly as a diagnostic procedure in order to evaluate the entity of inflammatory changes considering the possibility of an open conversion that must be done before any iatrogenic lesion occur. This policy has allowed us to avoid in our series postoperative complications such as lesions of the biliary tree. In conclusion we believe that LC for acute cholecystitis should be considered as a therapeutical option only for selected cases.

Acute Disease↗
PubMed1997

[Preliminary results on the use of scintigraphy with radiolabelled octreotide as diagnostic method in neuroendocrine and nonendocrine neoplasms of the lung].

Personal experience on the use of 111In-DTPA-octreotide scintigraphy (Octreoscan) in the staging of neuroendocrine and non-neuroendocrine tumors of the lung is reported. From July 1995 to May 1996 26 scintigraphic studies were performed in patients affected by lung cancer at the Department of Thoracic Surgery and at the Service of Nuclear Medicine of the University of Turin. The scintigraphy allowed to detect the lesion in all the neuroendocrine tumors and in 63.2% of the non neuroendocrine ones. Their preliminary results are discussed and stress is laid on the importance of this scintigraphic procedure in the staging and the follow-up of neoplastic patients.

Carcinoma↗
PubMed1997

Giant intracavernous carotid aneurysm in a child. Case report.

The occurrence of intracranial aneurysm in the pediatric population is a rare phenomenon. A case of giant aneurysm of the intracavernous carotid artery in a child is reported. Clinicoradiological findings are presented and the surgical procedure is illustrated. Authors stress the value of monitoring the cerebral collateral blood flow before and during the operation.

Adolescent↗
PubMed1997

Cerebral cavernous angiomas in critical areas. Reports of three cases in children.

Cerebral cavernous angiomas are congenital malformations usually presenting with symptomatic hemorrhages or seizures. The advent of MRI has allowed to detect asymptomatic, "cryptic" brain cavernomas. They can occur in a sporadic, isolated form and in a familial form characterized by multiple lesions. Surgical treatment is recommended by most authors in symptomatic cases when the lesion is isolated and readily accessible. Treatment is more controversial when the vascular malformation is located in critical brain region. On the other hand the increased risk of rebleeding after a prior hemorrhage and the decreased effectiveness of lesionectomy in patients with a long seizure history could lead to perform an early surgical excision also for cavernous angiomas located in those areas. We report three cases of symptomatic cerebral cavernomas located in critical areas, in children. In all cases the surgical removal of the lesions was successfully performed. The two cases presented with seizures are seizure-free in spite of the interruption of the antiepileptic therapy. The patient presented with neurological deficit due to intraparenchymal hemorrhage progressively recovered his motor function. Our experience seems to confirm the value of surgical removal regardless of where the cavernoma is located.

Brain Neoplasms↗
PubMed1996

Eosinophilic granuloma of C4 causing spinal cord compression.

A rare case of vertebral eosinophilic granuloma (C4) causing spinal cord compression is reported. The clinical, histological and radiological features of this pathological entity are discussed. After surgery a complete neurological recovery was observed. The value, in selected cases, of surgical treatment with total removal of the tumour and reconstruction of the spine to ensure spinal stability and to prevent irreversible neurological deficit is emphasized.

Cervical Vertebrae↗
PubMed1996

Spinal intramedullary angiolipoma.

We report the case of a young patient with a thoracolumbar (T11-L3) intramedullary angiolipoma. Total removal of the tumor was possible and after operation the patient's neurological condition greatly improved. Only two previous cases of intramedullary angiolipomas have been reported, and in neither could the lesion be wholly removed. The histopathological and radiological features of these tumors are discussed and the extreme rareness of this case is emphasized.

Angiolipoma↗
PubMed1996

Overexpression and activation of hepatocyte growth factor/scatter factor in human non-small-cell lung carcinomas.

Hepatocyte growth factor/scatter factor (HGF/SF) stimulates the invasive growth of epithelial cells via the c-MET oncogene-encoded receptor. In normal lung, both the receptor and the ligand are detected, and the latter is known to be a mitogenic and a motogenic factor for both cultured bronchial epithelial cells and non-small-cell carcinoma lines. Here, ligand and receptor expression was examined in 42 samples of primary human non-small-cell lung carcinoma of different histotype. Each carcinoma sample was compared with adjacent normal lung tissue. The Met/HGF receptor was found to be 2 to 10-fold increased in 25% of carcinoma samples (P = 0.0113). The ligand, HGF/SF, was found to be 10 to 100-fold overexpressed in carcinoma samples (P < 0.0001). Notably, while HGF/SF was occasionally detectable and found exclusively as a single-chain inactive precursor in normal tissues, it was constantly in the biologically-active heterodimeric form in carcinomas. Immunohistochemical staining showed homogeneous expression of both the receptor and the ligand in carcinoma samples, whereas staining was barely detectable in their normal counterparts. These data show that HGF/SF is overexpressed and consistently activated in non-small-cell lung carcinomas and may contribute to the invasive growth of lung cancer.

Adenocarcinoma↗
PubMed1996

Neuroendocrine carcinomas of the lung and role of 111In-DTPA-octreotide scintigraphy: preliminary results.

The authors report their experience on the use of 111In-DTPA-octreotide scintigraphy in the diagnosis of neuroendocrine carcinomas of the lung. The studies were performed both preoperatively, to obtain a correct staging of the tumor, or postoperatively, because of the suspicion of a recurrence or distant metastases. The main findings were: high sensitivity in localizing the tumor and its recurrences or metastases and high predictive value for responsiveness to "cold" octreotide therapy.

Adult↗
PubMed1996

[Acute cholecystitis: video-laparoscopic or laparotomic treatment? Role of the immune system].

Recent clinical studies suggest that laparoscopic cholecystectomy (LC) causes less depression of cell-mediated immunity than open cholecystectomy. LC is a so called "mini invasive" surgical presidia, and on the basis of this consideration we have investigated if and how the immune response is modified in patients with acute cholecystitis after laparoscopic cholecystectomy compare to patients undergone open cholecystectomy. Immune-activity (neutrophils, total lymphocytes count, lymphocytes subpopulations, HLA-DR, 6-Interleukin, skin multitests) was evaluated in 28 patients 24-36 hours before surgery and p.o. after 1, 3 and 6 days: 16 patients underwent "open" cholecystectomy and 12 LC. One day after surgery patients with open cholecystectomy showed significant increase (p < or = 0.05) of plasma neutrophils and 6-Interleukin, while these parameters were almost unchanged in patients with LC. Moreover, skin tests showed ipo or anergic response in the majority (81.8%) of patients with "open" surgery compare to patients with LC (10.5%): (p < or = 0.05). Finally monocyte antigen HLA-DR was also reduced in patients with "open" cholecystectomy: in this group we also recorded 2 cases (12.5%) of respiratory tract infection. In conclusion, LC for acute cholecystitis, avoids p.o. immunosuppression with better p.o. morbidity compare to open surgery.

Acute Disease↗
PubMed1996

[Chronic abdominal pain: role of video-laparoscopic adhesiolysis].

Adhesions have been suggested as a possible cause of chronic abdominal pain, but the reports of their etiological role conflict. Lysis of adhesions has been proposed as the therapeutic modality of choice, although the reports of success are controversial. The aim our prospective study was to determine whether laparoscopic adhesiolysis ameliorates chronic abdominal pain in patients with abdominal adhesions. Forty-one patients with chronic abdominal pain lasting for more than 6 months, but with no abnormal findings other than adhesions found at laparoscopy, underwent laparoscopic adhesiolysis. 37 patients (90.2%) were available for follow-up after a median time interval of 18 months (range: 12-41 months). Twenty-two patients (59.4%) were free from abdominal pain and 9 (24.3%) patients reported significant amelioration of their pain. Six (16.2%) patients had no amelioration. In conclusion the laparoscopy is an effective tool for the evaluation of patients with chronic abdominal pain, and laparoscopic adhesiolysis cures of ameliorates chronic abdominal pain in more than 80% of patients.

Abdominal Pain↗
PubMed1995

Long-term survival of thymoma patients by histologic pattern and proliferative activity.

We performed DNA flow cytometry and analysis of the argyrophilic nucleolar organizer regions (AgNORs) in formalin-fixed, paraffin-embedded sections from 60 surgically resected thymomas. The results were correlated with histologic pattern, stage, associated clinical features, and survival to assess which parameters could best predict prognosis. On univariate analysis, the 10-year survival rates were 86% for predominantly lymphocytic type but only 42% for predominantly epithelial, mixed lymphoepithelial, or spindle cell thymomas (p = 0.006); survival rates were 85% for noninvasive but only 34% for invasive thymomas (p = 0.0002); 73% for diploid but only 38% for aneuploid cases (p = 0.005); 88% for thymomas with 5.75 AgNORs per cell or fewer but only 34% for thymomas with more than 5.75 AgNORs per cell (p < 0.0001). On multivariate survival analysis, tumor stage (p < 0.001) and AgNOR counts (p = 0.009) retained independent prognostic significance. The 16 patients with predominantly lymphocytic type and 5.75 AgNORs per cell or fewer were all alive at the end of the observation period. In conclusion, the histologic type of the American classification and the proliferative activity evaluated by AgNOR analysis are the best predictors of long-term survival for patients with thymoma. Both predictors can be easily evaluated in the same histologic section, are highly reproducible, and permit identification of a group of patients with a favorable outcome regardless of other clinicopathological features.

Adolescent↗
PubMed1995

[Successive ischemic events to a first acute myocardial infarct treated with fibrinolysis. An analysis of GISSI-2 patients considered reperfused by a clinical criterion. Participants in the GISSI-2 study. Gruppo Italiano per lo Studio della Streptochinasi nell'Infarto Miocardico].

BACKGROUND: The fast normalisation of the ST, after thrombolysis, is early sign related to coronary artery reperfusion and to prognosis of acute myocardial infarction (AMI). The aim of this analysis is the evaluation, in the large patients cohort of the GISSI-2 trial, of the relationship between the ST segment evolution after fibrinolytic therapy of AMI and recurrent ischaemic events [angina-reinfarction-ischaemia to exercise testing (ET)] at 30 and 180 days from randomisation. METHODS: Patients with first confirmed IMA and ECG before randomisation and 4 hours later, are chosen from GISSI-2 trial. A decrease > or = 50% of the sigma ST elevation is adopted as cutoff for predicting coronary artery patency. Recanalisation is deemed to have occurred in group A patients versus not reperfused group B patients. The studied events are: angina, reinfarction, mortality, at 30 and 180 days from randomisation; ischemia to ET SL of 4-6 week. The results are presented in terms of Mantel-Haenszel odds ratios (OR) and 95% confidence intervals. RESULTS: Group A patients n. 5307 experienced versus group B patients n. 2718 a higher incidence of--in-hospital angina: 10.3% vs 7.9% OR 1.30 (1.11-1.52)-180 days reinfarction: 2.9% Vs 1.7% OR 1.66 (1.19-2.30)-Ischaemia to ET 25.4% vs 21.4% OR 1.24 (1.08-1.43), and a lower in-hospital mortality: 3.8% vs 8.5% OR 0.39 (0.32-0.48). CONCLUSIONS: Patients having indirect signs of early reperfusion post thrombolysis for IMA experience a higher in-hospital and 180 days recurrent ischaemia and a lower mortality; this fact can allow early identification of the patients who can receive a benefit from different therapeutical strategies.

Aged↗
PubMed1995

[Mediastinal Castleman's disease].

Castleman's disease(CD) is an uncommon lymph node syndrome, generally located in mediastinum side, rarely systemic. Two histhologic types are described: the more common, termed the hyaline-vascular type, generally asymptomatic, and the second termed plasma cell type, with systemic manifestations of the disease, like fever, anemia and weight loss. The authors present a case of a young man with Castleman's disease, treated by prednisone without reduction of the adenopathy, and thus successfully operated, and discuss about aetiopathogenic theories and treatment of this disease.

Adult↗
PubMed1995

Right post pneumonectomy pleural empyema caused by an esophagopleural fistula due to an esophageal carcinoma.

A case report of a patient with pleural empyema resulting from esophagopleural fistula following perforation of squamous cell carcinoma of the esophagus is presented. The patient had previously received a right pneumonectomy for bronchogenic carcinoma with the adjunct of postoperative radiotherapy. Description of the case, differential diagnosis and therapy of esophagopleural fistulas (EPF) as well as a review of the Literature is described and discussed.

Carcinoma, Bronchogenic↗
PubMed1995

Cervical dumbbell ganglioneuroma in an eighteen month old child. A case report.

Dumbbell neurogenic tumors are unusual in children. The authors report an extremely rare case of cervical intraspinal ganglioneuroma with a contiguous paravertebral component in an eighteen month old female patient. Both the intraspinal and the extraspinal parts of the dumbbell tumor were totally removed during the same surgical session. A laminotomy was performed rather than a laminectomy in order to avoid postoperative spinal column deformation. The authors emphasize the importance of an early diagnosis in preventing irreversible neurosurgical abnormalities and for achieving better surgical results.

Female↗