Showing 7 Abstracts.
The noninvasive, fast and accessible character of ultrasound has made it one of the most requested imaging procedures in Dermatology. The use of high frequency transducers has allowed significant advances in lesion characterization. The objective is to present a case of an exceptional condition, not yet described in the field of dermatological imaging. We are referring to agenesis of hypodermis. This patient is 4 years old and presents with an area of depression on the skin of the right scapular region, associated with a purple erythematous macula. A Doppler ultrasound is performed in the skin which showed complete absence of hypodermis, with partial replacement of vascular structures. The rest of the anatomy of the skin was of normal characteristics. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Innocente Natalia, Ledesma Ricardo, Perez Ricardo, Pelizzari Mario
Keywords: agenesia, hipodermis
Case Presentation A 27-year-old female patient, primigravida, with no pathological clinical history, and a low risk first-trimester screening for aneuploidy and preeclampsia. Morphological ultrasound was performed at 21 weeks of gestational age, revealing a cystic structure at the lumbosacral spine with bone alteration. Myelomeningocele was suspected, but no associated Chiari type II anomaly was observed. Additional Fetal Magnetic Resonance Imaging (Fetal MRI) was requested. Findings At 24 weeks, an obstetric ultrasound was made identifying a cystic image at the lumbosacral level with the absence of a placode. An osseous spur protruding into the medullary canal was observed, dividing the medullary cone in two. Suspicious fatty tissue suggestive of a lipoma was also noted. Fetal MRI confirmed the ultrasound findings, consistent with diastematomyelia (DM) associated with closed meningocele, lipoma, and medullary canal ectasia. Discussion Dysraphism are congenital malformations of the spinal canal, with a prevalence of 1 to 3 per 1000 live births, and the lumbosacral spine being the most commonly affected site. DM is a closed-type dysraphia in which there is a splitting of the spinal cord into two halves separated by a fibrous, cartilaginous, or bony septum. Clinical manifestations are variable and are typically related to orthopedic problems, urinary or fecal incontinence, and characteristic cutaneous abnormalities. When isolated, DM tends to have a favorable prognosis, but approximately one-third of affected patients have an accompanying dysraphism. Current recommendations include early postnatal surgery to prevent further complications. Conclusion DM is a rare disorder of spinal development that can be diagnosed prenatally through imaging. Precise identification of the lesion and the exclusion of other associated structural malformations are crucial for prognosis. Read More
Meeting name: SPR 2024 Annual Meeting & Postgraduate Course , 2024
Authors: Pelizzari Mario, Montalvetti Pablo, Joulia Vulekovich Lara, Ledesma Ricardo
Keywords: diastematomyelia, Fetal MRI, Ultrasonography
El lipoma es el tumor mesenquimático más frecuente de partes blandas. Su incidencia en la edad pediátrica es menor al 10% y esta cifra desciende aún más si tenemos en cuenta su localización subperióstica. Presentaremos pacientes menores de 2 años, diagnosticados por ultrasonido. Clínicamente, se presentan como una masa dura de partes blandas, de superficie lisa, habitualmente en la región frontal. En ecografía se observa tejido adiposo heterotópico, ubicado entre la gálea aponeurótica y el periostio del hueso frontal. De morfología semiesférica, de base plana y de superficie convexa, con su diámetro mayor paralelo a la superficie cutánea. Lesión predominantemente hipoecogénica con finos septos ecogenicos en su interior, siendo éste útimo hallazgo, lo mas caracteristico. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Innocente Natalia, Pelizzari Mario, Perez Ricardo, Ledesma Ricardo
El quiste broncogénico es una anomalía congénita, poco frecuente, que se origina del árbol traqueobronquial primitivo. Alteraciones en la migración de células durante el desarrollo, permite que se formen quistes revestidos por epitelio respiratorio. Las presentaciones extrapulmonares son muy infrecuentes. Daremos a conocer casos de pacientes pediátricos, diagnosticados con quiste broncogénico cutaneo, mediante ultrasonido dermatológico Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Innocente Natalia, Pelizzari Mario, Perez Ricardo, Ledesma Ricardo
Keywords: Quiste, Broncogenico
Representa una de las patologías más requeridas en los exámenes de ultrasonido de la piel, solicitados por médicos pediatras clínicos o dermatólogos. Habitualmente se realiza el diagnostico ecográfico ante la presencia de un nódulo cutáneo con calcificaciones; pero ello no es siempre así. En este poster educativo, mostraremos los cinco (5) tipos de pilomatrixoma que se pueden identificar al ultasonido Doppler Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Innocente Natalia, Pelizzari Mario, Perez Ricardo, Ledesma Ricardo
Keywords: Pilomatrixoma
To present a case of a disorder that has an infrequent prenatal diagnosis. Moebius syndrome is a rare congenital condition with an estimated incidence of 1/100000 births, characterized by an absence or underdevelopment of the facial and abducens nerve nuclei. In this patient, Moebius syndrome is suspected after completion of a fetal ultrasound in the 23<sup>rd</sup> week of gestation. Said ultrasound showed facial abnormalities, brain stem hyperechoic foci compatible with calcifications, macrocephaly secondary to ventriculomegaly and bilateral club foot, all signs suggestive of Moebius syndrome. On multiple follow up ultrasounds, an increase in ventriculomegaly is visualized, with possible lissencephaly, mega cisterna magna and a reduction in size and volume of the cerebellar vermis. All these findings are later confirmed with a fetal MRI. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Innocente Natalia, Pelizzari Mario, Perez Ricardo, Ledesma Ricardo, Giri Cantero Natalia
Case Presentation: We will show two cases, of patients aged 16 and 24 years, at 24 and 30 weeks of gestation, who were referred for a second-trimester ultrasound. Findings: The ultrasound revealed an enlarged lateral ventricle associated with an increased size of the ipsilateral cerebral hemisphere. A fetal MRI was performed revealing subependymal gray matter nodules, pachygyria, and areas of gliosis in the white matter. Discussion: Hemimegalencephaly is a rare congenital malformation initially described by Sims in 1835. It involves the partial or total overgrowth of a cerebral hemisphere with varying degrees of pachygyria, polymicrogyria, neuronal heterotopia, and white matter gliosis due to a disorder in germ cell proliferation, migration, and differentiation. Its etiology remains unknown, and it does not exhibit a gender preference. Clinically, 90% of patients present with focal or generalized epileptic seizures. They may also exhibit hemiparesis and mental retardation. Hemimegalencephaly can present in an isolated manner or be associated with various syndromes, including hypertrophy of the ipsilateral hemibody or total involvement, which affects the cerebellum and brainstem. Prenatal diagnosis is suspected through ultrasound, identifying ventricular asymmetry and unilateral ventricular dilation. Fetal MRI confirms these findings and allows the assessment of gray and white matter disorders. Conclusion: Hemimegalencephaly is a rare and severe condition that should be considered in prenatal assessment by ultrasound. Its diagnosis is facilitated by advances in fetal MRI, where the findings and their severity correlate with the clinical presentation. Read More
Meeting name: SPR 2024 Annual Meeting & Postgraduate Course , 2024
Authors: Pelizzari Mario, Ledesma Ricardo, Musso Marcos, Perez Ricardo, Montalvetti Pablo, Joulia Vulekovich Lara
Keywords: hemimeningencephaly, Fetal MRI, Ultrasonography