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Society for Pediatric Radiology – Poster Archive

Melissa Valdez Quintana

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Showing 4 Abstracts.

The purpose of these educational exhibit is to illustrate the tomographic evaluation of living renal donors for pediatric patients Renal transplantation has become the treatment of choice for end stage renal disease in children. Living donor renal transplantation is a better option for recipient and graft survival in comparison with cadaveric donor. Laparoscopic nephrectomy is preferred for removing the kidney from living donors, therefore the surgeons need accurate anatomic information We present an approach for the evaluation of living renal donors by tomography. Selected cases illustrating the evaluation of renal parenchyma, renal arteries, renal veins and collecting system are shown, including the key points of anatomic information that are valuable for the surgeons Read More

Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020

Authors: Valdez Quintana Melissa

Keywords: kidney transplant, CT, donor

We report a case of a term neonate who shortly after birth developed respiratory distress and left-sided pneumothorax. The pneumothorax was drained by a chest tube and the patient was referred to our institution. On day 17 of life a chest Xray and chest CT were performed demonstrating a multiloculated cystic lesion compromising the left upper lobe, most likely representing congenital pulmonary airway malformation (CPAM) type II (Figure 1). No abnormal systemic vessels were identified. At that time the patient was diagnosed with B influenza infection and the surgical intervention was deferred. Over the next several days the patient demonstrated improvement of the respiratory distress and progressive decrease of supplementary oxygen need. On day 25 of life the patient presented significant clinical improvement and, at physical examination, breath sounds were found on the left hemithorax. A follow-up chest xray demonstrated spontaneous resolution of the prior visualized cystic lesion that was confirmed with a chest CT (Figure 2). Postnatal spontaneous resolution of CPAM have been reported in only few cases, with resolution of the malformation in few months or years. Although we do not have pathologic confirmation, we postulate that our case represent CPAM type II that resolved spontaneously before the first month of life. The management of CPAM diagnosed during the neonatal period remains controversial, some authors recommend postpone surgical intervention in asymptomatic neonates and in patients with prompt resolution of respiratory distress without other significant anomalies. Our case illustrates the possibility of spontaneous resolution of CPAM and adds to the few reported cases that recommend conservative treatment. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Valdez Quintana Melissa, Ugas Carlos, Katekaru Tokeshi Doris, Matos Rojas Irma, Delgado Edgar

Keywords: CPAM, spontaneous resolution, neonate, CT

Significant progress in improving outcome for patients with oncohematological diseases are attributed to intensive chemotherapy, bone marrow transplantation, platelet transfusions, development of new imaging techniques, new antimicrobials and others. All these advances increase the survival of these patients which in turn increases the frequent of risk of infections that are substantial cause of morbidity and mortality in these patients. The purpose of this exhibit is to show the spectrum of infections in these patients; describe the imaging finding according to the etiology and associated factors. There are a number of factors that need to be considered in order to interpret abnormalities seen on radiology as the type of hematological disease, stage of the hematological disease, treatment phase, profile of immunodeficiency, treatment for infection received, patient history and clinical signs. For example, according to type of immunosuppression there are different spectrum of infections but leukemia affect all types of immunosuppression that include neutropenia, T cell defect and B cell defect. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Matos Rojas Irma, Lazarte Claudia, Katekaru Tokeshi Doris, Ugas Carlos, Valdez Quintana Melissa, Casamayor Alvina

Keywords: infections, Hematologic malignancy, Pediatric, diagnostic accuracy, aplastic anemia

The purpose of this exhibit is to review imagings findings of anomalous pulmonary venous return on angiotomography and describe anomalies associated. Magnetic resonance (MR) imaging and computed tomography (CT) are used in diagnostic and follow – up the congenital vein anomalies. CT provides superior spatial resolution and short time but there is exposure to ionizing radiation. However in many hospital there are only the possibility of obtain CT imaging in neonates and infant. The total anomalous pulmonary venous return (TAPVR) is the result of failure of the common pulmonary vein to connect to the left atrium with persistence of the primitive splanchnic connections of the pulmonary veins. There are four categories: supracardiac, cardiac, infracardiac and mixed. The partial anomalous pulmonary venous return (PAPVR) occurs when some but not all segments of the developing lung failed to establish connections with the common pulmonary vein. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Matos Rojas Irma, Ugas Carlos, Megue Huamani Marlin, Katekaru Tokeshi Doris, Lazarte Claudia, Valdez Quintana Melissa, Alpaca Rodriguez Larry, Casamayor Alvina

Keywords: anomalous pulmonary venous return, pulmonary veins, CT Scan