Shaping ability of new reciprocating or rotary instruments with two cross-sectional designs: An ex vivo study.

Aim: This study compared the shaping ability of four new reciprocating and rotary nickel-titanium instruments, with triangular or S-shaped cross-section, in the mesial canals of mandibular molars using micro-computed tomographic (micro-CT) evaluation.

Methodology: Twenty-four extracted mandibular molars with Vertucci's class IV configuration in the mesial root were selected for this study. The teeth were matched in fours according to anatomic similarities as revealed by micro-CT and then distributed into four groups of 12 mesial canals each according to the instrumentation technique: Reciproc Blue, R-motion, VDW.

Cardiac cysticercosis in the setting of colorectal cancer and immunosuppression.

Cysticercosis is a parasitic infection that is caused by the tapeworm and is prevalent in Latin America, southern Africa, and parts of Asia. Cysticercosis normally affects the central nervous system, but rare cases of cardiac cysticercosis have been reported in the literature. We report a case of asymptomatic cardiac cysticercosis in a 54-year-old Afro-Brazilian man with a history of hemicolectomy and chemotherapy, who demonstrated characteristic intramyocardial lesions on transthoracic echocardiogram and cardiac magnetic resonance imaging, and responded well to subsequent treatment with albendazole and prednisone.

Neurological manifestations due to dengue virus infection in children: clinical follow-up.

The aim was to assess neurological complications in children with an invasive neurological disease by dengue virus (DENV) and the time to resolve symptoms after hospital discharge. A prospective study was conducted at a referral hospital for infectious diseases in Brazil between March 2014 and July 2019. All children hospitalized with neurologic manifestations and DENV RNA detected by real-time reverse transcription-polymerase chain reaction (RT-qPCR) in cerebrospinal fluid (CSF) were followed up until complete resolution of neurological complications.

Neurologic Manifestations of Noncongenital Zika Virus in Children.

We evaluated neurologic complications following noncongenital Zika virus infection in 11 children who presented with central nervous system signs. Zika virus RNA was detected by real-time reverse transcription-polymerase chain reaction in cerebrospinal fluid. Approximately one-quarter of patients required antiepileptic medication in follow-up, and 2 children progressed to learning difficulties or developmental delay.

The impact of viral infections on childhood central nervous system infections.

Background: Viruses are a common cause of central nervous system (CNS) infections. However, studies of CNS viral pathogens in pediatric patients are poorly explored because viral infections are often erroneously diagnosed as bacterial infections.

Methods: 299 CNS samples were collected from pediatric patients aged from one month to 14 years old.