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Biomedical subjects

M Marel

Publications and source records attributed to M Marel.

At least 19 recordsLinked to original sources
PubMed2006

[Diagnostics and indications of surgical treatment of patients with lung carcinoma at the first clinic of TRN of the first faculty of medicine and the VFN Prague in years 2004 to 2005].

BACKGROUND: Results of the diagnostics and indications of surgical treatment of patients with lung carcinoma (BCA) at the First clinic in years 2004 to 2005 were evaluated in a retrospective study. METHODS AND RESULTS: The cohort of 209 patients with the male to female ratio of 2 to 1 included 63 % of current smokers, 22 % of former smokers and 15 % of non-smokers. BCA was diagnosed in significantly earlier age in smokers in comparison to former smokers or non-smokers. Men had smoked in average 107 000 of cigarettes more than women. In the family history we found one or more malignancies in 49 % of patients. In the personal history COPD was found in 42 % of patients. Patients with COPD had more frequently epidermoid type of cancer. In patients diagnosed at earlier stages of BCA (I to IIIA) COPD was present more frequently as an intercurrent disease in comparison with patients in higher stages. 34 % of patients had a history of alcohol abuse, the median age of alcoholic patients was 65 years, the median age of other patients was 70 years. In histologically verified tumours, the highest occurrence had the epidermoid type (29% of patients) and adenocarcinoma (27 %). 39 patients (18.6 % from the cohort) were surgically treated; from 128 patients with NSCLC 33 were surgically treated (25 % of NSCLC cohort). Among the causes of surgical treatment impossibility, the most frequent ones were COPD in the third to four stage, age over 80 years, polymorbidity and ill-being. CONCLUSIONS: Results of our study indicate that BCA is frequently diagnosed in already developed stage, numbers of surgically treated patients represent less than 20% of the total patients' number.

Aged↗
PubMed2005

[Lung cancer operability--history and presence].

Review of contemporary publication on the operability of lung cancer in the Czech Republic and in other countries is presented. Since 1912, when 374 cases of lung cancer were described, the incidence has risen and culminated towards the end of the 20th century. From the available treatment modalities, surgery gives the best results. An overview of papers describing the beginning of thoracic surgery in the Monde and in the Czech Republic is given. In the Czech Republic during 2002, 11.3% of all lung cancers were resected. From the TRN clinics in the Czech Republic about 20 to 27% of patients are recommended. In the leading world centres the operability is higher--about 25 to 35% of patients. The improvement of operability of lung cancer is possible namely by the increase of timely diagnosed tumors and by more frequent use of neoadjuvant medication in the treatment algorithms.

Humans↗
PubMed2004

[Results of treatment of malignant stenoses of the respiratory tract in a long term study].

BACKGROUND: :The malignant stenoses complicate the course of the disease in about 50% of patients with lung tumors. Management of them can influence the quality of life of the afflicted. There is no general agreement about optimal methods of their therapy, of selection of the best methods and also there is only few data about survival of these patients. METHODS AND RESULTS: 130 patients with tumors stenoses of the airways were prospectively followed in the 1998-2003 period, 93 of them suffered from lung cancer. Besides other treatment of the tumor they underwent also interventional bronchoscopy (Nd YAG laser, electrocautery i.e.). The airways were opened completely in 62% of the set of patients. The interventional bronchoscopy was complicated in 9% of patients, 32 patients lived at the 31st December of 2003, 98 of them had died. One year survival was 23.1%, median survival of the whole set of patients was 7 months. The patients with lung cancer had significantly worse survival than patients with other types of lung tumors, 6 months versus 10 months. There were no significant survival differences of the whole set according to the achieved grade of recanalisation, or according the inclusion of the brachytherapy to the set of interventional methods. The patients with inserted stent had significantly worse prognosis than the those without stenting. To homogenize the study group, the subset of patients with epidermoid lung cancer in the stage IIIB were selected (n = 51). Significantly longer survival of patients with complete recanalisation, insignificant longer survival in patients who underwent also brachytherapy and significantly shorter survival in patients with stenting were proved in this subgroup of patients. CONCLUSIONS: The interventional bronchoscopy has a low rate of complications and in most cases it has a palliative effect. The survival of patients is more influenced by the extension and the type of the tumor, their general status, polymorbidity, age etc. than by effect or selection of interventional bronchoscopical methods.

Adult↗
PubMed2004

[Treatment of benign stenoses of the large airways at the Faculty Hospital Praha-Motol during 1998-2003].

The authors present diagnostic and therapeutical results in the group of 80 patients with benign stenoses of large airways, who were hospitalized at the TRN ward (Department of TB and respiratory disorders) of the Faculty hospital Motol in Prague between the years 1998-2003. 62 patients sufferred from stenoses in cosequence of their tracheal intubation or tracheostomy. In 18 cases the stenoses resulted from other disorders or pathological condidtions (Wegener's granulomatosis, status post lung transplantation, etc.) 38 patients were sent for surgery. Up until the date of the assessment (September 2003), 8 of them had had a relaps of the condiditon. 6 operated subjects had their restenosis corected using bronchological methods, 2 subjects had to undergo reoperation, which is 5.2% of the total number of the operated subjects. The remaining 42 patients were treated using the interventional bronchological methods (electrocauther, laser, stents) which proved curative in 35 patients, i.e 44% of the whole group. In 7 inoperable patients the above methods failed, 6 of them having a permanent tracheostomy and one female-patient exited 2 days after an incomplete recanalization. In the subgroup of 18 patients with other than postintubation stenoses, stent operations were the most frequent (12 times), 4 patients were cured using other methods of interventional bronchology, and resection of the stenosis was indicated in two cases. Up until the date of the assessment, 65 subjects had survived and 15 exited. 5 of them died 3-14 months (median of 4 months) following the surgical procedure of other disorders than of the respiratory airways stenoses. 10 unoperated patients, with a single exception, also died due to other causes than the tracheobroncheal lesions (the survival rate median was 9 months). Following the initial freeing of the airways, the authors call for considering a surgical therapeutical option in each case. Provided the surgical approach was contraindicated, the interventional bronchological methods would replace it appropriately.

Adolescent↗
PubMed2003

[Surgical treatment of bronchogenic carcinoma 1970-2001].

BACKGROUND: Lung cancer (LC) is a permanent medical and social problem. 5709 patients died in the year 2000 of this disease in Czech Republic. Its incidence in men is 100/100,000 and it shows only small trend to decrease. In women the incidence has reached 22/100,000 and is still rising. The ratio males/females in the whole country is 4:1, in pulmonary department of University hospital Motol is close to 2:1. The optimal way of treatment is a surgery. METHODS AND RESULTS: From the data about diagnostics and operability in Pneumological Clinic of the 1st Medical Faculty of the Charles University (former 2nd Clinic of Tuberculosis and Respiratory Diseases) and from adequate data obtained from the Pulmonary department of University hospital Motol we can see that the number of operated patients increased from 20% in 1970 to 28% in 2001. When compared two set of patients operated in the period 1985-1990 and 1998-2001 we learned the change of the ratio males/females (from 17:1 to 2:1), lower number of pneumonectomies (from 34% to 31%), lower number of exploratory thoracotomies (from 13% to 5%), decrease of perioperative mortality from 10% do 2%. The percentage of correct clinical when compared to pathological TNM staging was similar in both periods (55% in the period 1985-1990 and 53% in the period 1998-2001). In the article we describe also results of diagnostics, induction and adjuvant treatment and possibilities of the increase of operability of the patients with lung cancer. CONCLUSIONS: The authors think that despite some improvements in several parameters, the 5-year survival of patients with lung cancer is in our country and the whole world still unsatisfactory. We recommend the revision of current attitude to the screening of lung cancer and we recommend joining the running European-American trials of screening of such patients with the help of low-dose spiral CT.

Carcinoma, Bronchogenic↗
PubMed2002

[Chronic obstructive pulmonary disease at the turn of the millennium].

The article reviews information on the chronic obstructive pulmonary disease (COPD), from the domestic and international sources. Significance of the disease has recently increased, in the US it becomes the fourth most frequent cause of death. Pathogenesis of the disease is different from the bronchial asthma, though in about 10% of patients both diseases can occur simultaneously. The article brings basic pathological and pathophysiological differences between both types of disease and it describes results of functional tests in relation to the most common international standards of the diagnostics and treatment of COPD. The most recent definition of COPD, elaborated by specialists associated in the Global initiative for COPD (= GOLD), stresses the abnormal reaction to the chronic inhalation of particles. Reviewed are also mechanisms of the effect of modern bronchodilatators--long acting beta 2-agonists, permanently conflicting views on the use of corticosteroids, and on the surgical treatment of COPD. Promising method appears the treatment with long-lasting anticholinergic drugs or the attempt to affect mediator antagonist be e.g. leucotrien D4 (LTD4) and the use inhibitors of phosphodiesterase 4.

Asthma↗
PubMed2002

[Early diagnosis of lung carcinoma].

Importance of the lung cancer (LC) in our country and in the world as well as possibilities of its active screening are described. In US the lung carcinoma represents the most frequent lethal cancer both in males and females. In the Czech Republic (CR), mortality due to LC has the first place among men and the third place among women. Incidence of LC in males has not increased and for several years it has been reaching about 100 per 100,000. In women during the last 30 years mortality has increased three times reaching frequency 22 per 100,000. In the year 2000, 5709 persons died for the disease. In CR, about 6 to 7% of patients can be expected to survive 5 years, in the western Europe it is about 8%, in US 13%. Results of the diagnostics and treatment of the lung cancer revealed question on the active screening. Among the methods available at present, the most promising for conditions in CR appears the use of the low-dose spiral CT scan in the risk population. The paper brings results of a study evaluating the possibilities of the recognition of asymptomatic stadia of LC and discusses ideas of a future international study assessing the effectiveness of LC screening using this method.

Czech Republic↗
PubMed2002

[Benign stenoses of the large respiratory airways].

BACKGROUND: Benign stenoses of main respiratory pathways develop usually in patients after intubation or tracheostomy. Incidence of such states is not known, they are frequently diagnosed too late, and there are different views of their treatment. In order to contribute to the improvement of our knowledge of this serious impairment we followed prospectively all patients with this diagnose at our department since March 1998. METHODS AND RESULTS: The group of 31 patients with benign stenoses of non-tumorous origin diagnosed and treated at the TRN of the Teaching Hospital Motol in years 1998 to 2000 consisted of 24 males and 7 females, age median was 52 years. Stenosis was caused in 27 patients by intubation, in 4 patients by some other causes. At admission we performed in 30 patients electrocauterization and dilatation of stenosis, one patient was immediately indicated for surgery. Beside two cases we always achieved sufficient patency of stenosis and weighted indication to surgery. We sent for surgery 15 patients, 10 patients were permanently healed using methods of interventional bronchoscopy, including introduction of stent in 6 cases. From the remaining 6 patients, two of them are planned for resection of stenosis, four are inoperable from various reasons, and two died of causes not related to stenosis. CONCLUSIONS: Based on our experience we recommend as an optimal management of such patients is the dilatation or removal of stenosis and then always to consider resection of trachea. In inoperable cases methods of interventional bronchoscopy should be used. Authors recommend sending all patients intubated longer than 2 days for bronchoscopic examination in interval of 2 months.

Bronchial Diseases↗
PubMed2001

Oral moxifloxacin vs high-dosage amoxicillin in the treatment of mild-to-moderate, community-acquired, suspected pneumococcal pneumonia in adults.

STUDY OBJECTIVES: Comparison of the efficacy and safety of moxifloxacin vs amoxicillin for treatment of mild-to-moderate, suspected pneumococcal community-acquired pneumonia (CAP) in adult patients. DESIGN: Multinational, multicenter, double-blind, randomized study. SETTING: Eighty-two centers in 20 countries (Argentina, Brazil, Chile, Croatia, Czech Republic, Estonia, France, Hong Kong, Hungary, Lithuania, Mexico, Portugal, Russia, Slovenia, South Africa, Spain, Turkey, Ukraine, United Kingdom, and Uruguay). PATIENTS: Four hundred eleven adults (inpatients or outpatients) with suspected pneumococcal CAP. INTERVENTIONS: Randomization 1:1 to moxifloxacin, 400 mg/d, or amoxicillin, 1,000 g tid, for 10 days. RESULTS: Primary efficacy parameter was clinical response, 3 to 5 days after therapy (end of therapy [EOT]) in the per protocol (PP) population (362 patients). The clinical success rate in the PP population was 91.5% (moxifloxacin) and 89.7% (amoxicillin; two-sided 95% confidence interval, -4.2 to 7.8%). The clinical cure rate in patients with proven pneumococcal pneumonia was similar in both treatment groups (87.8%). The bacteriologic success rate in 136 bacteriologically evaluable patients at the EOT was 89.7% (moxifloxacin) and 82.4% (amoxicillin). The bacteriologic success rate against Streptococcus pneumoniae was 89.6% (moxifloxacin) and 84.8% (amoxicillin). The frequency of adverse events was comparable in both treatment groups. Digestive symptoms were the most common drug-related adverse events in both treatment groups. CONCLUSIONS: Moxifloxacin was statistically at least as effective as high-dose amoxicillin for treatment of mild-to-moderate, suspected pneumococcal CAP. Moxifloxacin may be an alternative for empiric CAP treatment, especially in areas where multidrug resistance in S pneumoniae is sufficiently prevalent to preclude routine penicillin.

Administration, Oral↗
PubMed2001

[Occlusion of a post-pneumonectomy bronchopleural fistula using the Dumon stent].

A postoperative bronchiopleural fistula associated with empyema of the chest is a serious complication in thoracic surgery, in particular when it develops after pneumonectomy. Some patients are in a condition which threatens their life and rules out extensive surgical interventions. Immediate thoracic drainage, thoracoscopic revision and sanation of the empyema cavity and endoscopic closure of the fistula are in indicated cases a therapeutic alternative of open surgical procedures. The justification of these miniinvasive procedures is confirmed by the submitted case-record of a successfully cured fistula associated with empyema of the chest after pneumonectomy. At the same time, based on assembled experience, the authors draw attention to the possible use of a stent.

Bronchial Fistula↗
PubMed2001

Metabolic characterisation of solitary pulmonary nodules by positron emission tomography with FDG--preliminary report.

BACKGROUND: In the past some authors evaluated FDG-PET as a powerful tool for non-invasive assessment of malignancy of solitary pulmonary nodules (SPN). The aim of this paper is to verify the performance of positron emission tomography with fludeoxyglucose (FDG-PET) in SPN in the conditions of the Czech Republic during the first 16 months of the operation of the PET Centre Prague. MATERIAL AND METHODS: The group of 22 patients with 23 SPN was investigated by dedicated PET scanner due to inconclusive CT scan. Micromorphological confirmation was available in 61%; follow-up (median = 12 months) concerned the other 39% SPN. RESULTS: PET was clearly positive in 11 nodules, all were malignant according to micromorphological assessment. PET was completely negative in 10 nodules, 3 of them were micromorphologically evaluated as benign, the other 7 nodules were followed up without any signs of malignancy. In two cases, PET revealed enhanced glucose consumption, but the pattern was not typical for malignancy. These cases were considered as bronchopneumonia, but till now, they have not been definitely resolved. CONCLUSIONS: Excluding two unresolved cases, sensitivity and specificity of FDG-PET was 100% for malignancy in our series. PET was helpful in medical decision-making in all patients.

Journal Article↗
PubMed2000

[Development of epidemiologic indicators in the diagnosis and therapy of pulmonary cancer in the Czech Republic 1970-1999].

BACKGROUND: Lung cancer (LC) remains serious medical and social problem. In US it represents the most frequent cause of malignancy-related deaths both in males and females. In Czech Republic about 6000 persons acquires LC each year. The aim of the study was to describe developmental trends of the mortality, methods of therapy and results of treatment in Czech Republic during the last 30 years. METHODS AND RESULTS: Prevalence of LC in males reached maximum in the middle of seventies (104/100,000), in females it has still the increasing tendency, being highest in 1996 (22.8/100,000). Comparing the swiftness of diagnostics: In years 1985 to 1996 number of late diagnosed cases diminished and the operability of all diagnosed cases increased from 10.4% to 11.8% in males and from 9.4% to 11.2% in females. The most frequent type of LC is the epidermoid type reaching in 1998 52% of all cases in the CR and 47% of cases treated at the TRN department of the Second Medical Faculty. Result of the five years survival have been still unsatisfying, only 4% of males and 5.3% females live longer than five years. At the department of TRN of the Second Medical Faculty in years 1998 and 1999, 266 cases of LC were diagnosed. The male/female ratio was 2:1, 21.9% were at first or second stadium. Following treatment was employed: 24.4% of all diagnosed cases were sent to surgery, 40% underwent radiotherapy, 94.3% of patients with parvocellular LC and 22% of non parvocellular LC received chemotherapy. CONCLUSIONS: In Czech Republic during the last 25 years numbers of males with LC stagnate at inacceptable high values, in females the incidence still progresses. Unsatisfying are the results of treatment, numbers of patients surviving longer than 5 years are lower than in most of developed countries. To improve the situation it would be necessary to limit smoking habits in the population, reassess possibilities of depiction of early phases of LC, and improve the therapy employing modern approaches as the neoadjuvant chemotherapy, contemporary chemotherapeutic regimes in combination with radiotherapy or surgical therapy.

Czech Republic↗
PubMed1999

[Chylothorax--a rare type of pleural effusion. Case report].

Chylothorax is a rare type of pleural exudate. The diagnosis, assessment of etiology, reflections on the type of treatment, as well as treatment are associated with various pitfalls. The authors present the case-history of a patient with spontaneous chylothorax on the right who was successfully treated by surgery after possible ways of conservative treatment were exhausted. Surgical treatment involved severing and ligature of the thoracic duct.

Chylothorax↗
PubMed1996

[Trends in epidemiologic indicators of lung cancer in the Czech Republic 1970-1990].

BACKGROUND: Lung cancer is the malignant tumour with the highest mortality in the Czech Republic as well as in highly developed countries of the world. The objective of the present study in an account on the incidence, diagnosis, treatment and mortality in the Czech Republic, at the Pneumological Clinic and the population in the district. METHODS AND RESULTS: The incidence and mortality rate from lung cancer increased during the past twenty years in men by 12% and declined by 2% resp. In women both indicators are steadily rising by 100 and 76% resp. The highest values of incidence and mortality in men were recorded at the end of the seventies and beginning of the eighties. During the investigation period a reduction of the age of those who died from lung cancer-men and women -was found, the increase in the group of 35-49-year-olds is 51% in men and 159% in women. As to histological types, spinocellular carcinoma is still the most frequent type, gradually the small cell type and adenocarcinoma are increasing in numbers. The authors investigated also differences in the epidemiological situation as regards lung cancer in the southern and northern Czech regions and compared the position in this country with that in other European countries. CONCLUSIONS: Despite some positive signals (decline of the lung cancer incidence in men), lung cancer still remains a serious medical and social problem. An alarming feature is in particular the linear rise of lung cancer incidence in women and the shift of deaths from this disease to younger age groups.

Adult↗
PubMed1995

Diagnosis of pleural effusions. Experience with clinical studies, 1986 to 1990.

OBJECTIVES: To identify in patients with pleural effusion which procedures are most useful in separating malignant from nonmalignant pleural effusions and to identify which procedures most commonly lead to a definitive diagnosis. DESIGN: Prospective consecutive case series. SETTING: Pulmonary referral hospital in Prague, Czech Republic. PATIENTS: One hundred seventy-one adults between ages 18 and 70 years with a pleural effusion and a Karnofsky score of 70 or above. INTERVENTIONS: All patients underwent history, physical, pleural fluid cytologic study, laboratory evaluation of serum and pleural fluid, pleural biopsy, bronchoscopy, and lung scan and/or pulmonary arteriogram. RESULTS: In this series in which 45% of the patients had malignant effusions, 19% had paramalignant effusions, and 36% had benign diseases, the pleural fluid cytologic study was the best for establishing a diagnosis. The pleural fluid carcinoembryonic antigen (CEA) levels above 10 had a high specificity (90%) for malignancy but had low sensitivity (37%). The pleural fluid CEA level was increased only in 19% of patients with paramalignant effusions. Although there were statistically significant differences in the mean results on several biochemical tests of pleural fluid, none were very accurate in separating malignant from benign disease. CONCLUSION: From this study, we conclude that patients with an undiagnosed pleural effusion should be evaluated in an individualized stepwise manner. If malignancy is strongly considered, the initial three steps should be relatively noninvasive and include clinical evaluation and cytologic study.

Adolescent↗
PubMed1994

The results of surgical treatment of non-small cell lung cancer at the Pneumological Clinic in Prague, Czech Republic 1985-1990.

In the Czech Republic, lung cancer is the most frequent malignant tumor in men. In 1990 the incidence was 99.6/100,000 for men and 15.8/100,000 for women. Neither diagnostic nor therapeutic approaches have changed significantly in the last 10 years. Patients undergoing lung resection have a chance of long-term survival. In this retrospective study, the authors analysed the data of 252 patients undergoing the operation for non-small cell lung cancer (NASCL) in the period 1985-1990. Of all patients who in that period had lung cancer diagnosed in our clinic, only 22% were operated on. Lobectomy was the most frequent type of operation (45%), and exploratory thoracotomy was carried out in 13%. The epidermoid type of cancer was the most frequent one (62%). Comparing cTNM with pTNM, concordant results were found in 55% of the series, 39% were clinically underestimated and 6% overestimated. By the time of the evaluation (31 December 1992), 78% of all patients who had undergone surgery during the study period had died. The most frequent cause of death was lung cancer metastasis. In the subseries of patients who died within 1 month after surgery (10% of all patients), the most frequent cause of death was pneumonia. The survival curve shows the best prognosis for patients in the Ist TNM stage, with 40% surviving 5 years. The authors consider the results of this study to favour aggressive surgical treatment of NSCLC patients.

Adenocarcinoma↗