Case presentation A 40-year-old woman was found to have an incidental anterior mediastinal mass, as revealed by a pre-employment chest radiograph. She denied respiratory and gastrointestinal symptoms. Medical history : None Examination She had mild bilateral ptosis and no neck masses. The results of the cardiopulmonary examination are unremarkable, and there is no generalized lymphadenopathy. The neurologic examination revealed normal sensation and diminished muscle strength in all the extremities with a repetitive motion against resistance.
A chest CT scan revealed the presence of a 4.5 cm well-circumscribed solid mass in the anterior mediastinum. What is the most likely diagnosis for this patient? NOTE: No other information about the patient is available. *This Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only.
