RESUMO
Rosai-Dorfman disease (RDD) is a rare idiopathic benign proliferative disorder of histiocytes. RDD typically presents with cervical lymph node involvement; however, extranodal sites such as the breast can also be involved and should prompt evaluation for additional sites of disease.
Assuntos
Doenças Mamárias/diagnóstico por imagem , Doenças Mamárias/patologia , Histiócitos/patologia , Adulto , Doenças Mamárias/metabolismo , Feminino , Histiócitos/metabolismo , Humanos , Mamografia , Proteínas S100/metabolismo , Ultrassonografia MamáriaAssuntos
Doenças Mamárias/diagnóstico por imagem , Linfadenopatia/diagnóstico por imagem , Linfoma de Células T Periférico/patologia , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Axila/diagnóstico por imagem , Axila/patologia , Doenças Mamárias/patologia , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/cirurgia , Neoplasias da Mama/terapia , Feminino , Humanos , Biópsia Guiada por Imagem , Linfadenopatia/patologia , Linfoma de Células T Periférico/tratamento farmacológico , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Terapia de Salvação , Ultrassonografia MamáriaRESUMO
We report a case of a 29-year-old female with a history of asthma, post-partum ARDS, and pulmonary hypertension who presents with severe shortness of breath. The patient describes her shortness of breath as progressive over the past 10 years. Chest radiography and CT angiography of the thorax showed findings consistent with fibrosing mediastinitis with severe stenosis of the left main pulmonary artery. This resulted in appearance of unilateral absent left lung perfusion on quantitative Tc-99-MAA perfusion and Xe-133 ventilation (V/Q) scan.
RESUMO
The Smartphone-based Compression-induced Scope (SCIS) is a mobile device designed to sense the mechanical properties of tumors. Here, an SCIS system with an infrared temperature (SCIS-T) sensor is developed. The color and texture information of target skin are extracted from the SCIST images using a color-based edge detection technique and a texture filter. This new system provides mechanical properties (size, elasticity) of the inclusion as well as the skin surface (color, temperature, texture) characteristics. The application of this system is in the identification of inflammatory breast cancer, which is characterized by color, texture, and temperature change. The device is tested using chicken breast phantoms with embedded silicone inclusion.
Assuntos
Neoplasias da Mama , Compressão de Dados , Smartphone , Neoplasias da Mama/diagnóstico , Detecção Precoce de Câncer , Humanos , TemperaturaRESUMO
A simple-to-use, noninvasive, and risk-free system, which will provide accurate identification of potentially life threatening malignant tumors using tactile pressure, is developed. The Smartphone-based Compression-Induced (SCI) Scope will allow physicians to quickly capture the mechanical properties of a benign or malignant tumor with the convenience of a smartphone platform. The size and elasticity property is described using estimating methods from the pressure-induced images of SCI Scope. The device is based on the Apple iPhone 6. The image will be captured through a waveguide. The image information in combination with the force sensor value will be transmitted wirelessly to a computer for processing. The size and elasticity estimation experiments with SCI Scope showed that the size estimation error of 2.31% and estimated relative elastic modulus error of 23.9%.
Assuntos
Neoplasias , Compressão de Dados , Módulo de Elasticidade , Elasticidade , Humanos , SmartphoneRESUMO
Chilaiditi sign is the incidental radiologic finding of intestinal interposition between the liver and diaphragm, whereas Chilaiditi syndrome describes the presence of accompanying clinical symptoms including abdominal pain, constipation, vomiting, and respiratory distress. We describe a case of radiotracer accumulation over the liver dome on Tc-mebrofenin hepatobiliary scan performed on a 72-year-old man with acute cholecystitis mimicking a bile leak. However, chest radiograph and CT revealed intestinal hepatodiaphragmatic interposition. This case illustrates the importance of being familiar with the scintigraphic appearance of the Chilaiditi sign and correlating abnormal nuclear medicine scan findings with other available radiologic modalities.