Biomedical subjects
J Gil
Publications and source records attributed to J Gil.
[A case of multiple diagnostic errors].
A case of female patient with alimentary functional disorders following cholecystectomy is presented. Erroneously diagnosed cholelithiasis (by ultrasound examination) was the cause of hospitalization. Discordances in laboratory findings caused further examinations. Their false positive results might lead to the treatment of serious impact on patient's health. An emphasis in on careful clinical analysis of each case and criticism in interpretation of widely used clinical imaging techniques.
[Catheter sepsis: pathogeny and prevention with a new connection model].
A revision is made of the issue regarding sepsis related to central intravenous catheterization. A special point was made on the relevance of latest discoveries in the field of pathogenicity in order to prevent, diagnose and treat this entity. Preventive measures should be geared to avoid intralumen infection, and success may depend on new connection models and industrial preparation of nutrient mixtures. Infected catheters must be removed, but in highly selected patients local and systemic antibiotic therapy may be attempted.
[Desmoplastic fibroma. Differential diagnosis of a periapical lesion from endodontic failure].
Treatment of endodontically involved teeth requires accurate diagnosis of the clinical pulpal condition to determine the primary cause of pathosis. The case presented shows the differential diagnosis between a desmoplastic fibroma and a failure of a misdiagnosed endodontic treatment. The initial direction of treatment should had never been the endodontic therapy but local surgical curettage of the lesion.
Computerized interactive morphometry of brushing cytology specimens.
Forty-two bronchial brushing cytology specimens were evaluated by a video-based computerized interactive morphometry (CIM) system with an interactive peripheral consisting of a touch-sensitive screen mounted over a high-resolution video monitor. The system was programmed to allow a trained observer to rapidly measure nuclear and cytoplasmic profile diameters of randomly selected cells and to calculate their nuclear-cytoplasmic ratios. The specimens included 13 cytologic slides with no malignant cells present, 14 with non-small cell carcinoma cells and 15 with small cell carcinoma cells. The cases were divided into two groups: a training set composed of slides with "known diagnosis" and a test set of slides with "unknown diagnosis". A data set was constructed with the measurements from the cases with "known diagnosis," and an algorithm that allowed the classification of cases by hierarchical analysis was developed. The data was also analyzed with statistical methods of classificatory discriminant analysis. Utilizing the information in the data base, the slides with "unknown diagnosis" were classified individually; all cases were correctly classified by the procedures. Potential applications of CIM in cytology are discussed.
Computerized interactive morphometry as an aid in the diagnosis of pleural effusions.
A morphometric study of cytologic preparations from patients with benign and malignant (mesothelioma and carcinoma) pleural effusions is reported. The routine cytologic smears from these specimens were studied with a new system of video-based computerized interactive morphometry (CIM) that allows the measurements of real-time images of cell profiles by the simple procedure of touching the two extreme points of a diameter of interest on a touch-sensitive screen. For each cell, the nuclear profile diameter (NPD) and the cytoplasmic profile diameter (CPD) are measured and categorized into classes with 2-microns intervals; the NPD/CPD ratio is also calculated. The mean NPD is calculated for the specimen after measurement of 100 cells. The data were interpreted by two independent methods: a statistical method of discriminant analysis that classifies the lesions as benign, carcinoma or mesothelioma and provides a probability statement of membership in a particular diagnostic class and an ad-hoc algorithm that categorizes the effusions as benign or malignant based on hierarchic analysis. A data base derived from study of the first 24 cases was constructed and utilized for the test classification of the second 24 cases, which were treated as specimens of unknown diagnosis. The discriminant analysis correctly classified 21 of the 24 test cases into their proper diagnostic groups. The algorithm for a computer-generated pathologic diagnosis correctly identified 47 of the 48 cases as benign or malignant. The technical advantages of video-based CIM over the existing morphometric methods are discussed.
Morphometric characteristics of the air-blood barrier at different degrees of inflation.
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[Mechanical implications of bronchopulmonary anatomy].
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Edema formation in the lung: quantitative morphological methods.
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[Endoscopic and histopathological changes in the gastric and intestinal mucosa in patients with psoriasis].
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Prevention of hepatic metastases by liver lectin blocking with D-galactose in colon cancer patients. A prospectively randomized clinical trial.
76 colon adenocarcinoma patients (stages 1-3, NO, MO) were enrolled into a prospectively randomized clinical trial, 39 patients were perioperatively treated with D-galactose-(therapy group: 1.9 g/kg BW and day) or D-glucose-containing electrolyte infusions (control group: n = 37). There were no cases of perioperative mortality. The complication rate was 17.1% (therapy group: 15.3%; control group: 18.9%). Since tumor staging and grading were equally distributed for therapy and control groups, a non-stratified statistical analysis yielded a) significantly reduced hepatic metastases and b) improved overall survival for patients of the therapy group. Stage-dependent analysis demonstrated that stage 3 carcinoma patients of the treatment group developed significantly less hepatic metastases as compared to patients of the control group.
Prevention of hepatic metastases by liver lectin blocking with D-galactose in stomach cancer patients. A prospectively randomized clinical trial.
80 stomach adenocarcinoma patients (T1-3, NO, MO) were enrolled into a prospectively randomized clinical study. 40 patients were perioperatively treated with D-galactose (treatment group: 1.9 g/kg BW and per day) or D-glucose-containing electrolyte infusions (control group: n = 40). Perioperative mortality was low (3.7%), complication rate was 11.2% (treatment group: 12.5%; control group: 10%). Since tumor staging and grading were similarly distributed for treatment and control groups, a non-stratified statistical analysis yielded a) significantly reduced hepatic metastases b) significantly improved overall survival for patients of the treatment group. A statistically significant effect on survival free of hepatic metastases and overall survival could be demonstrated for stage T3 patients of the verum group, as compared to patients of the control group.