Estimating the size of polyps during actual endoscopy procedures using a spatio-temporal characterization.

Colorectal cancer usually appears in polyps developed from the mucosa. Carcinoma is frequently found in those polyps larger than 10mm and therefore only this kind of polyps is sent for pathology examination. In consequence, accurate estimation of a polyp size determines the surveillance interval after polypectomy.

[New horizons in breast surgery. Radioguided surgery and selective sentinel node biopsy].

Although needle-wire localization is the most commonly used localization technique for nonpalpable breast lesion biopsy, the technique of radioguided occult lesion localization (ROLL), is becoming increasingly used for open-surgery diagnosis in such cases. Sentinel lymph node biopsy(SLNB) is based on the hypothesis that lymphatic drainage from a tumor reaches the sentinel node(SLN) first and that it can be identified accurately and removed. If SLN exactly reflects the lymph-node status, a negative SLN for metastasis might allow complete axillary lymph node dissection (ALDN) to be avoided.

[Antiplatelets and anticoagulants in acute coronary syndromes: levels of evidence].

Management of acute coronary syndromes (ACS) has moved rapidly in parallel with our understanding of the pathophysiological basis of the disease. In the eighties, the demonstration of the pivotal role of coronary thrombosis in the etiology of a ACS led to administration of aspirin and unfractionated heparin. In recent years, new medical and invasive therapies have been developed: anti-platelets (thienopyridines and glycoprotein Ilb/IlIa inhibitors), antithrombins (low molecularweight heparins) and most recently, factor Xa inhibitors (pentasaccharides).

[Immediate acoustic effect of the cochlear fistula in a guinen pig].

Introduction And Objectives: To Evaluate objectively the effect that cochleostomy has in the cochlea as well as the exposition of the estria vascularis, through acoustic otoemissions immediatly after surgery.

Material And Methods: Submandibular approach to the guinea pig's middle ear and cochlea. Triming of the timpanic and vestibular first turns and wide exposition of the estria vascularis in the first and second turns.

[Sensory interaction in posturography].

Objective: The aim of this work is to show the results obtained with a dynamic posturography on a stabilometric platform and to create relative parameters of study.

Material And Methods: The study was performed on 127 patients with dizziness of a peripheral vestibular origin and the results analyzed in a dynamic posturography under six conditions of stimulation.

Results: The values obtained under the studied conditions of dynamic posturography are significantly different when the conditions of test increases sensorial conflicts.

Mitogen-activated protein kinase phosphatase-1 is overexpressed in non-small cell lung cancer and is an independent predictor of outcome in patients.

Purpose: An increase in the activity of the mitogen-activated protein kinases (MAPKs) has been correlated with a more malignant phenotype in several tumor models in vitro and in vivo. A key regulatory mechanism of the MAPKs [extracellular signal-regulated kinase (ERK); c-jun NH(2)-terminal kinase (JNK); and p38] is the dual specificity phosphatase CL100, also called MAPK phosphatase-1 (MKP-1). This study was designed to examine the involvement of CL100/MKP-1 and stress-related MAPKs in lung cancer.

[F-18-FDG positron emission tomography in the diagnosis of ovarian recurrence. Comparison with CT scan and CA 125].

Objective: The aim of this study was to evaluate the clinical utility of FDG-PET for detecting recurrent disease in patients with ovarian cancer.

Material And Methods: Twenty-one FDG-PET studies performed in 19 patients who had previously undergone surgery and chemotherapy for ovarian cancer were reviewed retrospectively. In a maximum interval of one week regarding the FDG-PET study, computed tomography (CT) was performed and CA-125 levels were measured.

[Screening for lung cancer with low-dose spiral CT: results in 150 asymptomatic subjects].

Background And Objective: Our aim is to present initial baseline data from a screening trial on low-dose spiral computed tomography (CT). We describe enrollment criteria and a diagnostic algorithm based on initial low-dose CT findings.

Subjects And Method: From September 2000 to May 2001, 150 asymptomatic smokers (age range 40-78 years; mean 55 years) were studied using non-enhanced low-dose spiral CT of the chest.

[The effect of anesthetic technique on recovery from neuromuscular blockade with cisatracurium].

Objectives: To assess the effect of four anesthetic techniques on recovery after a single dose of 0.2 mg/kg of cisatracurium.

Patients And Method: After giving informed consent, 96 patients of both sexes, ASA I-III, were enrolled.

[Cultural adaptation of 2 questionnaires for health measurement in patients with vertigo].

Objective: To perform a transcultural adaptation form English to Spanish of two common questionnaires of handicap assessment in vestibular disorders.

Study Design: Prospective study.

Patients: 337 patients seen for non-acute dizziness from peripheral or central origin in a tertiary referral setting.

[Does propofol have advantages over midazolam and isoflurane? Comparative study of 2 total intravenous anesthesia techniques using midazolam and propofol, versus balanced anesthesia with isoflurane].

Objectives: To compare two techniques for total intravenous anesthesia (TIVA): midazolam-alfentanil-flumazenil and propofol-alfentanil, contrasting them with combined anesthesia (thiopental-isoflurane-alfentanil) and assessing the efficacy of flumazenil in continuous perfusion for preventing resedation in TIVA with midazolam.

Patients And Methods: The efficacy and clinical tolerance of the 3 anesthetic techniques with propofol, midazolam or isoflurane were studied in 63 patients undergoing elective breast, lumbar or gynecological surgery. Anesthetic induction was achieved with midazolam 0.

[Non-tuberculous infections of the spine].

Non tuberculous spondylodiscitis of the rachis is an uncommon entity that affects boys and male adults with greater frequency. The zone with higher incidence of affection is the lumbar region. Usually the causal germ travels through the hematogenous via from an extrarachidial infectious area.