A comparison between ultrasonography and single-phase computed tomography for preoperative assessment of solid abdominal tumors in children.

Objective: This study aimed to estimate the performance of single-phase-enhanced computed tomography and ultrasonography examinations in the preoperative evaluation of solid abdominal tumors and their relationship with relevant adjacent structures in children.

Methods: This retrospective study included 50 pediatric patients with malignant solid abdominal tumors treated with surgical resection between 2009-2017. Preoperative computed tomography and ultrasonography were compared to operative findings (gold standard) in the diagnosis of invasion or encasement of adjacent structures.

Dentoskeletal changes and their correlations after micro-implant-assisted palatal expansion (MARPE) in adults with advanced midpalatal suture ossification.

Objectives: To evaluate and correlate the dentoskeletal changes of adult patients after miniscrew-assisted rapid palatal expander (MARPE) in the two final stages of midpalatal suture ossification.

Materials And Methods: This interventional pre-post clinical study consisted of 20 adults (24.9±1.

Soft-tissue cone-beam computed tomography (ST-CBCT) technique for the analysis of skeletal, dental and periodontal effects of orthopedic rapid maxillary expansion.

Background: Orthopedic rapid maxillary expansion (RME) is a common treatment of choice for managing transverse deficiency of the maxilla. This approach may have desired and undesired skeletal, dental and periodontal effects that may be assessed clinically or through imaging techniques. This study aims to investigate the dental, skeletal and periodontal effects of orthopedic RME using the soft-tissue cone-beam computed tomography (CBCT) technique.

Relationship between the morphology of the maxillary central incisor and horizontal and vertical measurements of the face.

Purpose: In order to assist in the selection of artificial teeth for complete dentures, this study aimed to assess the relationship between horizontal and vertical measurements of the face and the morphology of the maxillary central incisor.

Materials And Methods: This was a study of 50 plaster casts and 100 teleradiographs - 50 in lateral norm and 50 in frontal norm, belonging to 50 individuals, Caucasian, with a naturally optimal occlusion, matching at least four of the six keys of Andrews. Images of the upper central incisors were obtained by scanning the plaster casts (three-dimensional) and subjectively classified by three examiners as oval, triangular or quadrangular.

Use of pineapple juice with gadopentetate dimeglumine as a negative oral contrast for magnetic resonance cholangiopancreatography: a multicentric study.

We evaluated the efficacy of pineapple juice with gadopentetate dimeglumine as a negative oral contrast agent for magnetic resonance cholangiopancreatography (MRCP). Images were obtained before and after the intake of a negative oral contrast agent. Images obtained from six different areas of the biliary tree were analyzed by three different radiologists, who were blind to the exams; scores regarding image quality were given to each area.

Effect of conjugated estrogen versus conjugated estrogen associated with medroxyprogesterone acetate in postmenopausal women on internal carotid artery pulsatility index: a randomized pilot study.

Aim: To compare the effect of conjugated estrogen (CEE) versus conjugated estrogen and medroxyprogesterone acetate (MPA) therapy on internal carotid artery pulsatility index (PI) in postmenopausal women.

Material & Methods: In the prospective, randomized, single-blinded comparative study, postmenopausal women meeting the inclusion criteria were randomized into one of two groups: CEE group (CEE 0.625 mg/day), or CEE + MPA group (CEE 0.

[Prevalence of adrenal incidentaloma at computed tomography (chest and abdominal) in a general hospital in Brazil].

Objective: To prospectively determine the prevalence of incidental adrenal lesions at computed tomography (CT) at an University Hospital in Brazil.

Patients And Method: A cross-sectional prospective study was performed to evaluate 3,382 consecutive patients with no known adrenal disease or malignancies who underwent chest and abdominal CT scans over a ten-month period. The cases of adrenal incidentaloma were defined by the presence of any change in gland contour, size or density.

[Cancer in thyroid nodules: evaluation of ultrasound and fine-needle aspiration biopsy].

Background: Thyroid nodules are a very common clinical problem and fine-needle aspiration biopsy (FNAB) is its main diagnostic test. Recently, it has been shown that some ultrasonographic features are associated to an increased risk of cancer, but a comparison between FNAB and ultrasonography (US) or its combination is not available. The aim of this study was to evaluate FNAB and US performance, isolated or combined, for cancer diagnosis in thyroid nodules.