FCEM2-0708
A 35-year-old woman comes in with a complaint of difficulty swallowing that has been ongoing for the past year. Her dysphagia affects both solids and has been gradually getting worse. Additionally, she has experienced multiple instances of her fingers turning purple when exposed to cold temperatures. Upon examination, her fingers appear swollen and the skin over them is thickened. Telangiectasias are also present.
What is the SINGLE most probable diagnosis?