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.
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.
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%.
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