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What is Wahin tumour is: and explain in detail?
Wahin Tumor: Papillary Cystadenoma Lymphomatosum Benign neoplasm of salivary gland Arises almost exclusively in parotid gland Round to oval encapsulated masses, 2 to 5 cm in diameter M/E -These spaces are lined by a double layer of neoplastic epithelial cells which might have germinal centres, resting on a dense lymphoid stroma .