All publications of “Ronaldo Hueb Baroni”

12 results

Vertebral body erosion secondary to aortoiliac aneurysm

Lilian Aguiar Pupo Zanini ORCID logo , André Dubinco ORCID logo , Eduardo Kaiser Ururahy Nunes Fonseca ORCID logo , Fernando Ide Yamauchi ORCID logo , Ronaldo Hueb Baroni ORCID logo

DOI: 10.31744/einstein_journal/2019AI4550

A 75-year old female patient presenting chronic arterial hypertension, was admitted at the emergency department with moderate unspecific abdominal pain. A computed tomography of total abdomen with no contrast enhancement was requested due to altered renal function and suspicion of acute obstructive abdomen. The computed tomography sections ( and ) showed a fusiform aneurysm in the aortoiliac bifurcation, extending up to the right iliac artery. This aneurysm was causing erosion of the anterior aspect of L4 vertebral body, with bone […]

Isolated middle colic artery injury after blunt abdominal trauma

Eduardo Kaiser Ururahy Nunes Fonseca ORCID logo , Fernando Ide Yamauchi ORCID logo , Milton Steinman ORCID logo , Thais Caldara Mussi ORCID logo , Adriano Tachibana ORCID logo , Ronaldo Hueb Baroni ORCID logo

DOI: 10.31744/einstein_journal/2018AI4384

A 34-year old male patient, victim of motorcycle accident at about 56 miles/hour, was brought into emergency care with a cervical collar. He was hemodynamically stable, with no respiratory or neurological impairment, complaining of diffuse moderate intensity abdominal pain during the physical examination. During secondary evaluation, abrasions were identified on the abdominal wall in the right flank area. Due to high energy trauma, he underwent a whole body computed tomography (CT) that showed an hematoma in the mesenteric fat planes […]

Marsupial vena cava mimicking lymph node enlargement on tomography

Antonio José Souza Reis Filho ORCID logo , Marcelo Assis Rocha ORCID logo , George Ramos Lemos ORCID logo , Fernando Ide Yamauchi ORCID logo , Adriano Tachibana ORCID logo , Ronaldo Hueb Baroni ORCID logo

DOI: 10.1590/S1679-45082018AI4394

A 56-year-old male patient, hypertensive, diabetic and asymptomatic, underwent abdominal computed tomography (CT) with intravenous contrast for follow-up of hepatic steatosis. Computed tomography demonstrated a solid hypervascular nodule in the pancreatic head (characteristics of neuroendocrine lesion – ) and oval formation anteriorly to the aortoiliac bifurcation (). In this situation, axial CT can mimick lymph node enlargement, especially in clinical oncology context. However, evaluation of the different phases of the exam and the reformatted coronal and sagittal images help making […]

Atypical hepatic hemangioma: imaging features of hyalinized hemangioma

Letícia Maria Araujo Oliveira Nunes, Caroline Duarte de Mello-Amoedo, Fernando Ide Yamauchi, Ronaldo Hueb Baroni

DOI: 10.1590/S1679-45082018AI4256

A 46 years old man, complaining about abdominal pain, was submmited to a magnetic resonance having a giant liver hemangioma as an incidental finding (). In the follow-up, after 6 years, we observed in a T2-weighted sequence volumetric reduction of lesions’ signal in T2-weighted image () was observed. Temporal evolution, associated with imaging features, indicated sclerosed/hyalinized hemangioma (). […]

Multifocal nodular steatosis mimicking liver metastasis

Eduardo Kaiser Ururahy Nunes Fonseca, Thiago Raspa Freitas Magdalena, Fernando Ide Yamauchi, Marcelo de Castro Jorge Racy, Cássia Franco Tridente, Ronaldo Hueb Baroni

DOI: 10.1590/S1679-45082017AI3869

We report a case of a 56-year-old male under investigation for large lytic lesion at clivus. After lesion resection, patient was referred to abdominal computed tomography scan for metastasis screening. The lesion was posteriorly characterized as chondroid chordoma at histopathology examination. On non-enhanced computed tomography, multiple hypottenuating nodules of different sizes were seen; the largest nodule had 3.2cm. On post-contrast phases lesions had similar enhancement to adjacent liver parenchyma. However, no significant mass effect or invasiveness were seen, once vascular […]

PET/MRI: a novel hybrid imaging technique. Major clinical indications and preliminary experience in Brazil

Taise Vitor, Karine Minaif Martins, Tudor Mihai Ionescu, Marcelo Livorsi da Cunha, Ronaldo Hueb Baroni, Marcio Ricardo Taveira Garcia, [...]

DOI: 10.1590/S1679-45082017MD3793

ABSTRACT In recent years, medical imaging with hybrid techniques has widely accepted and employed in clinical routine. PET/MRI offers significant advantages, including excellent contrast and resolution and reduced ionizing radiation, as compared to well-established PET/CT. Therefore, PET/MRI is a promising modality for oncologic imaging of some regions, such as brain, head and neck, liver and pelvis. This article set out to analyze clinical conditions that could benefit from PET/MRI imaging based on our caseload. The potential of PET/MRI to become […]

Multiparametric magnetic resonance imaging findings of prostatic pure leiomyomas

Thais Caldara Mussi, Yves Bohrer Costa, Marcos Takeo Obara, Marcos Roberto Gomes de Queiroz, Rodrigo Gobbo Garcia, José Antonio Domingos Cianciarulo Longo, [...]

DOI: 10.1590/S1679-45082016AO3715

ABSTRACTObjective:To describe the imaging findings of prostatic tumors nonadenocarcinoma on multiparametric magnetic resonance imaging.Methods:A total of 200 patients underwented multiparametric magnetic resonance imaging of the prostate for screening for prostate cancer, from August 2013 to September 2014, followed by biopsy with ultrasound/magnetic resonance imaging fusion.Results:We found three pathologic proved cases of prostatic pure leiomyomas (0.02%) in our series and described the multiparametric magnetic resonance imaging features of these prostatic leiomyomas. The imaging findings had similar features to lesions with moderate […]

Liver-specific magnetic resonance contrast medium in the evaluation of chronic liver disease

Marcio Augusto Correia Rodrigues dos Reis, Ronaldo Hueb Baroni

DOI: 10.1590/S1679-45082015RW3159

ABSTRACTThe hepatobiliary-specific contrast medium (gadoxetic acid – Primovist®) is primarily used to improve detection and characterization of focal hepatic lesions, such as in chronic liver disease patients with suspected hepatocellular carcinoma. Since the contrast medium is selectively taken up by functioning hepatocytes in the late hepatobiliary phase, it helps to detect typical hepatocellular carcinoma, which show low signal intensity on this phase. This imaging feature also assists in differentiating regenerative/dysplastic nodules from early hepatocellular carcinomas (with over 90% accuracy), as […]

Endometrium evaluation with high-field (3-Tesla) magnetic resonance imaging in patients submitted to uterine leiomyoma embolization

Monica Amadio Piazza Jacobs, Felipe Nasser, Eduardo Zlotnik, Marcos de Lorenzo Messina, Ronaldo Hueb Baroni

DOI: 10.1590/S1679-45082013000100011

Objective:To evaluate the endometrial alterations related to embolization of uterine arteries for the treatment of symptomatic uterine leiomyomatosis (pelvic pain and/or uterine bleeding) by means of high-field (3-Tesla) magnetic resonance.METHODS:This is a longitudinal and prospective study that included 94 patients with a clinical and imaging diagnosis of symptomatic uterine leiomyomatosis, all of them treated by embolization of the uterine arteries. The patients were submitted to evaluations by high-field magnetic resonance of the pelvis before and 6 months after the procedure. […]

Iron overload in Brazilian thalassemic patients

Reijane Alves de Assis, Fernando Uliana Kay, Laércio Alberto Rosemberg, Alexandre Henrique C. Parma, Cesar Higa Nomura, Sandra Regina Loggetto, [...]

DOI: 10.1590/S1679-45082011AO1897

ABSTRACT Objectives: To evaluate the use of magnetic resonance imaging in patients with β-thalassemia and to compare T2* magnetic resonance imaging results with serum ferritin levels and the redox active fraction of labile plasma iron. Methods: We have retrospectively evaluated 115 chronically transfused patients (65 women). We tested serum ferritin with chemiluminescence, fraction of labile plasma iron by cellular fluorescence and used T2* MRI to assess iron content in the heart, liver, and pancreas. Hepatic iron concentration was determined in […]

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