Histological analysis of the tumour. a. Malignant glandular tissue with sub-nuclear vacuoles. b. Pleomorphic stromal malignant blastematous component. c. The malignant glandular component was diffusely positive for the epithelial marker Cam 5.2. d. Positive for TTF-1 and negative for vimentin. e. The stromal blastematous malignant component showed reverse expression. f. The protein beta-cathenin was observed in both components.