Fig. 4.
a Thymoma (left) adjacent to MTC (right), with haemorrhage. b A typical MTC showed remnant thymic tissue in the periphery of the cyst. c MTC lined by squamous epithelium with inflammatory cells infiltration. d Atypical type A thymoma was continuous with the cyst lining. e MTC displaying prominent necrosis. f MTC displaying cholesterol deposition