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A Pereira Vega

Publications and source records attributed to A Pereira Vega.

7 recordsLinked to original sources
PubMed2002

[A man with lung cancer and tuberculosis: a false positive by positron emission tomography and its clinical repercussions].

Positron emission tomography (PET) has come to play an increasingly important role in the evaluation of lung cancer patients, both for diagnostic staging and post-treatment follow-up. As is true for other techniques, PET gives false positive and negative results. False positives have been described in the presence of certain active infections and inflammatory lesions, such as tuberculous granulomas, coccidioidomycosis, aspergillosis and histoplasmosis. We report the case of a man whose PET gave a false positive and in whom both lung cancer and tuberculosis were present. A radical change in therapeutic approach was required, making the case interesting.

Antitubercular Agents↗
PubMed2002

[Chronic cough].

Explore the source record for details and available documents.

Adult↗
PubMed1997

[Relation between asthma and atopy markers in children and young adults].

The aim of this study was to assess whether atopy, measured as total IgE level (IgEt) and/or skin test (ST) reactivity is related to bronchial asthma in the same way in children and young adults. Three hundred fifty-three children between 11 and 15 years of age (mean 12.6 years) and 208 adults between 20 and 44 years old (mean 32.1 years) were selected randomly as representative of persons living in the city of Huelva (Spain). All subjects filled out a questionnaire on respiratory symptoms (The European Community Respiratory Health Survey--[ECRHS]) and were given a methacholine challenge test (MT) with results expressed as PD20 as well as IgEt and ST assessments of atopy. We defined bronchial asthma as the association of having experienced wheezing within the last 12 months and having a positive ST. Among children, 4.5% suffered bronchial asthma. Among adults the proportion was 5.3%. The IgEt value that best discriminated between asthmatics and non asthmatics was 145.5 U/ml in children (sensitivity 75% and specificity 69.1%) and 96.6 U/ml in adults (sensitivity 90.9% and specificity 73.6%). A logarithmic transformation (log IgEt) was used to study the relation between bronchial asthma and IgEt. By simple analysis, IgEt and ST were related to bronchial asthma in children (p = 0.002 and p < 0.0001, respectively), while only IgEt (p < 0.001) was related in adults. By multiple regression analysis, controlling for both factors simultaneously as well as for smoking in adults, we found that ST (p = 0.023) but not IgEt was related in children, whereas IgEt (p = 0.0005) but not ST was related in adults. We conclude that the two markers of atopy studied are related to bronchial asthma differently and have different manifestations at different stages of life. ST is more useful in children, whereas IgE determination is of more use in adults.

Adolescent↗
PubMed1995

[Respiratory symptoms in a pediatric population].

With the aim of determining the prevalence of respiratory symptoms and rhinitis among adolescents in Spain, we sent a brief questionnaire about respiratory symptoms to all school children (9,644) in the sixth, seventh and eight grades in our city. We identified a symptomatic group (SG) consisting of adolescents who reported having had one or more of the following three signs within the past 12 months: a) waking with a feeling of stuffiness; b) experiencing an asthma attack, or c) taking medication for asthma. Returned questionnaires accounted for 74.4% of those distributed. The following symptoms were reported: wheezing by 13.4%, nighttime oppression by 8.4%, stuffiness at night by 7.3%, nighttime coughing by 24.8%, asthma attack by 4.5%, taking asthma medication by 6.1% and seasonal rhinitis by 15.4%. The proportion of symptomatic children was 11.6% (833). All symptoms studied that were not required for inclusion in SG correlated highly with that group (p < 0.0001). Neither age nor sex were related to inclusion.

Adolescent↗