Fig. 2
From: Autoimmune alopecia areata due to thymoma without myasthenia gravis: a case report
Thymoma. a Computed tomography image showing a well-defined mass of 6 cm on the left side of the anterior mediastinum. b Enlarged image of the excised thymus. The tumor was located on the left upper pole of the thymus. c Her thymoma showed type AB characteristics, which was a mixture of dark areas with abundant small atypical lymphocytes and areas of spindle-shaped cells with round to oval nuclei arranged in bundles