The spectral profile of cortical activation during a visuospatial mental rotation task and its correlation with working memory.

Introduction: The search for a cortical signature of intelligent behavior has been a longtime motivation in Neuroscience. One noticeable characteristic of intelligence is its association with visuospatial skills. This has led to a steady focus on the functional and structural characteristics of the frontoparietal network (FPN) of areas involved with higher cognition and spatial behavior in humans, including the question of whether intelligence is correlated with larger or smaller activity in this important cortical circuit.

Effect of the Menstrual Cycle on Electroencephalogram Alpha and Beta Bands During Motor Imagery and Action Observation.

Female sex steroids (FSS) can affect the motor system, modulating motor cortex excitability as well as performance in dexterity and coordination tasks. However, it has not yet been explored whether FSS affects the cognitive components of motor behavior. Mu is a sensorimotor rhythm observed by electroencephalography (EEG) in alpha (8-12 Hz) and beta (15-30 Hz) frequency bands in practices such as motor imagery (MI) and action observation (AO).

RIGHT AORTIC ARCH ASSOCIATED WITH AGENESIS OF THE LEFT INTERNAL CAROTID ARTERY - AN EXTREMELY RARE CASE REPORT.

Introduction: A right aortic arch and agenesis of internal carotid artery (ICA) are both extremely rare vascular devel- opment anomalies. Etiology of the both anomalies might be associated with the abnormal regression of the dorsal aorta. Most cases of ICA are asymptomatic due to sufficient collateral circulation and it is usually an incident finding on head and neck imaging by color Doppler ultrasonography, computed tomography (CT) or magnetic resonance imaging (MRI).

Neuroendocrine appendiceal tumor and endometriosis of the appendix: a case report.

Introduction: Endometriosis of the appendix is very uncommon, accounting for only about 1% of all cases of endometriosis. However, endometriosis is found in the appendix in approximately 8-13% of patients with deep infiltrating endometriosis and is particularly common in patients with severe forms of deep infiltrating endometriosis. Neuroendocrine tumors are the most common neoplasms of the appendix and may be misdiagnosed when there are multiple endometriosis lesions in the pelvis.

The role of frontal and parietal cortex in the performance of gifted and average adolescents in a mental rotation task.

Visual-spatial abilities are usually neglected in academic settings, even though several studies have shown that their predictive power in science, technology, engineering, and mathematics domains exceeds that of math and verbal ability. This neglect means that many spatially talented youths are not identified and nurtured, at a great cost to society. In the present work, we aim to identify behavioral and electrophysiological markers associated with visual spatial-ability in intellectually gifted adolescents (N = 15) compared to age-matched controls (N = 15).

Arterial Vascular Complications in Peripheral Venoarterial Extracorporeal Membrane Oxygenation Support.

Introduction: Extracorporeal membrane oxygenation (ECMO) has evolved as a life-saving measure for patients requiring emergent support of respiratory and cardiac function. The femoral artery is the standard site for vascular access when initiating adult venoarterial (VA) ECMO. Cannulation-related complications are a known source of morbidity and it has been speculated that patients undergoing ECMO via femoral arterial cannulation are more likely to develop peripheral vascular complications (up to 70%).

Rapid Pacing for Thoracic Endovascular Aortic Repair: a Case Report.

Introduction: Endovascular aortic interventions are suitable alternatives to open surgery, being less invasive and having lower mortality and complications. Accurate positioning of the stent graft is a critical point because of systolic thrush. Techniques used to prevent it include pharmacological (antihypertensive drugs, nitroglycerin, adenosine) and mechanical methods (temporary caval occlusion by balloon).

Arterial Vascular Complications in Peripheral Venoarterial Extracorporeal Membrane Oxygenation Support.

Introduction: Extracorporeal membrane oxygenation (ECMO) has been evolved as a life-saving measure for patients requiring emergent support of respiratory and cardiac function.The femoral artery is the standard site for vascular access when initiating adult venoarterial (VA) ECMO.Cannulation-related complications are a known source of morbidity and it has been speculated that patients undergoing ECMO via femoral arterial cannulation are more likely to develop peripheral vascular complications (up to 70%).

[Percutaneous Endovascular Aortic Repair with Local Anesthesia - One Day Surgery].

Introduction: To evaluate the results of the abdominal aortic aneurism endovascular treatment (EVAR), percutaneously and with local anesthesia, according to the concept of one day surgery.

Material And Methods: Unicentric, retrospective analysis of patients with aorto-iliac aneurysmal disease, consecutively treated by EVAR with percutaneous access trough the Preclose technique (pEVAR), according to the outpatient criteria, with one overnight stay in the hospital. The technical success, exclusion of the aneurysmal sac, endoleak, re-intervention and mortality were evaluated.

Confirmatory factor analysis of the Questionnaire on the Health Staff's Perceptions Regarding Doutores da Alegria's Interventions.

A confirmatory analysis was performed to validate the Questionnaire on the Health Staff's Perceptions Regarding Doutores da Alegria's Intervention, a 40-item instrument designed to assess pediatric staff's perceptions regarding the effects of Doutores da Alegria, a Brazilian hospital clowning professional organization. Eight dimensions were evaluated: the permanence of Doutores da Alegria's interventions; Doutores da Alegria's intrapersonal and interpersonal effects on their relation to health staff; themselves; staff-children; and staff-family relationships; as well as their effect on staff's cultural development; children's relation to their own disease; and families' attitude regarding their child's condition. In all, 567 health professionals from 13 Brazilian hospitals participated.

Cryptococcosis, silicosis, and tuberculous pseudotumor in the same pulmonary lobe.

Tuberculosis and cryptococcosis are infectious diseases that can result in the formation of single or multiple nodules in immunocompetent patients. Exposure to silica is known to raise the risk of infection with Mycobacterium tuberculosis. We report the case of an elderly man with no history of opportunistic infections and no clinical evidence of immunodeficiency but with a six-month history of dry cough and nocturnal wheezing.

[False aneurysm of the superficial temporal artery. Clinical report and literature review].

Traumatic injuries of the external carotid artery and its branches are relatively rare in clinical practice and they may occur following head injuries. The superficial temporal artery is particularly susceptible to injury, given to its superficial course and the fact that it is overlying the temporal bone. The authors report the clinical case of a 88 years-old female treated of a false aneurysm of the superficial temporal artery and they proceed to a review of the literature.

Risk factors for pulmonary complications in patients with sarcoma after the resection of pulmonary nodules by thoracotomy.

Objective: To identify the risk factors for pulmonary complications after thoracotomy for the resection of pulmonary nodules in patients with sarcoma.

Methods: A retrospective cohort study involving 68 consecutive patients diagnosed with sarcoma and submitted to a total of 174 thoracotomies for the resection of pulmonary nodules. The dependent variable was defined as the occurrence of any postoperative pulmonary complications.

Relationship between plasma cells and hepatic stellate cells in autoimmune hepatitis.

Autoimmune hepatitis is an inflammatory chronic disease of the liver, which frequently results in cirrhosis. The present study aimed to verify the relationship between plasma cells and stellate cells in autoimmune hepatitis. Thirty-three pre-treatment, 11 post-treatment, and 10 normal liver biopsies were reviewed.

[Clinicopathological aspects of and survival in patients with clinical stage I bronchioloalveolar carcinoma].

Objective: To analyze the clinicopathological aspects of bronchioloalveolar carcinoma (BAC) and the survival in a sample of patients at clinical stage I.

Methods: A retrospective study involving 26 patients diagnosed with clinical stage I BAC and undergoing surgery at the Thoracic Diseases Institute of the Federal University of Rio de Janeiro, in the city of Rio de Janeiro, Brazil, between 1987 and 2007. We analyzed clinicopathological and radiological aspects, as well as mortality and survival.

Duodenocaval fistula as a result of a fish bone perforation.

Duodenocaval fistula is a rare and potentially lethal condition. We report a case of a 61-year-old female with a duodenocaval fistula resulting from a fish bone perforation of the duodenum who survived with conservative treatment. To our knowledge, this is the first reported case of a duodenocaval fistula caused by a fish bone.

Occlusion of inferior vena cava: a singular presentation of abdominal aortic aneurysm.

Even though the majority of abdominal aortic aneurysm s(AAAs) are asymptomatic, they can occasionally manifest as a result of adjacent structures involvement. Although the most frequent venous complication of AAA is rupture into the inferior vena cava (IVC), venous compression can infrequently occur. The authors report a particularly rare case of compression and thrombosis of the IVC by AAA.

Inferior mesenteric artery stenting: a solution for chronic mesenteric ischemia.

Chronic mesenteric ischemia (CMI) is a rare entity with potentially tragic consequences. Meanwhile, there is still no consensus regarding the most adequate treatment approach. The authors herein report a case of a 65-year-old woman with severe CMI as a result of an occlusion of both the celiac artery (CA) and superior mesenteric artery (SMA) and a significant stenosis of the inferior mesenteric artery (IMA) ostium.

Isolated iliac artery aneurysms: six-year experience.

Objectives: To review the experience of our institution in repairing isolated iliac artery aneurysm (isolated IAA) in the last six years.

Methods: The medical records of patients who underwent isolated IAA repair were reviewed, to obtain information on patients' demographics, vascular risk factors, type of treatment and outcome.

Results: A total of 11 patients with 16 aneurysms, all men, with a mean age of 69.

Upper limb ischemia in a patient with Wegener's granulomatosis.

Objectives: We report a clinical case of a small-vessel vasculitis with ischemia of the left upper limb.

Case: A patient diagnosed with Wegener's granulomatosis and involvement of the left axillary and brachial arteries. A left axillary-radial bypass with reversed left great saphenous vein was performed.

Histological aspects of rhinosinusal polyps.

Unlabelled: Contemporary cohort cross-sectional study.

Introduction: Despite its importance for an accurate diagnosis, histology differences among nasal polyps and its clinical implications are rarely reported in the literature. The existing papers classify polyp samples without concern for prior treatments, which could influence the results attained.

Fungal infection by Paracoccidioides brasiliensis mimicking bone tumor.

Paracoccidioides brasiliensis infection causes a systemic mycosis originally described in Latin America but with current reports of worldwide distribution. The clinical presentation of paracoccidiodomycosis as an isolated long-bone lesion in children is quite unusual. This article describes a 10-year-old male with a lytic femoral bone lesion caused by P.

Parathyroid adenoma apoplexy as a temporary solution of primary hyperparathyroidism: a case report.

Introduction: The natural history of patients with spontaneous parathyroid necrosis is unknown. In this case report we describe the clinical course, laboratory, radiographic, bone densitometry tests, parathyroid ultrasonography and scintigraphy examinations of a patient performed over a period of eight years after she first presented with a sudden episode of spontaneous resolution of primary hyperparathyroidism (PHPT).

Case Presentation: A 24-year-old woman with a clinical history and laboratory and radiographic tests compatible with PHPT suffered a sudden episode of cervical pain and presented with clinical evidence of hypocalcemia.

Cellular aspects of liver regeneration.

This paper has the objective to analyze the cellular aspects of liver regeneration (LR). Upon damage in this organ, the regenerative capacity of hepatocyte is sufficiently able to reestablish the parenchyma as a whole. Taking into account the regenerative capacity of hepatocyte, the need of a progenitor or a liver trunk cell was not obvious.

A molecular view of liver regeneration.

The purpose of this review was to carry out an analysis of the liver regenerative process focusing on the molecular interactions involved in this process. The authors undertook a review of scientific publications with a focus on the liver regeneration. The cellular processes involved in liver regeneration require multiple systematic actions related to cytokines and growth factors.