[Initial diagnosis of leishmaniasis in endoscopic gastrointestinal biopsy. Report of 2 cases].
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Biomedical subjects
Publications and source records attributed to A García Escudero.
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OBJECTIVE: The presence of signet ring cells within a transitional cell carcinoma is a factor of poor prognosis. METHODS: We report the case of a 69-year-old male patient with the diagnosis of high grade transitional cell carcinoma with signet ring cell pattern, the presence of which could have been foreseen in serial cytological tests performed after the clinical debut. RESULTS: To achieve such a diagnosis, it is necessary to rule out the possibility of metastasis or infiltration of a neoplasia from other organ. CONCLUSION: Both the presence of an in situ neoplasia or the coexistence of infiltrative transitional cell tumor can help to determine primary origin of these neoplasias.
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Chronic antiarrhythmic therapy for the prevention of episodes of paroxysmal supraventricular tachycardia is limited by its elevated cost, the development of side effects and lack of patients' collaboration. In this study the efficacy and safety of a single oral dose of diltiazem (180 mg) and propranolol (80 mg) were assessed. Eighteen episodes of supraventricular tachycardia were treated in 17 patients, 9 female and 8 male, aged between 19 and 60 years old (mean 45.3 +/- 11.4). The episodes had begun 3 months to 40 years before. They were divided in 3 groups: group I (placebo), 6 episodes; group II (diltiazem-propranolol), 12 episodes; and group III (patients from the placebo group without spontaneous recovery of sinus rhythm who were given active drug), 6 episodes. There were no spontaneous conversions in group I (placebo) within 80 minutes. In group II, ten out of 12 episodes responded to the combination after 38.8 +/- 20.8 minutes (seven episodes were converted to sinus rhythm within the first 45 minutes). In group III (non-responders to placebo who were subsequently given active drugs), four out of 6 episodes were suppressed after 50.7 +/- 16.7 minutes. The cycle of the tachycardia lengthened before conversion to sinus rhythm both in groups II and III. Neither systolic nor diastolic blood pressure changed significantly in any group. Seven out of 14 patients who successfully converted to sinus rhythm in groups II and III, suffered mild to moderate sweat between 3 and 5 minutes before the end of the episodes.(ABSTRACT TRUNCATED AT 250 WORDS)
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