A pleomorphic adenomas (so-called mixed tumors) predominantly localize in the salivary glands. of the mixed tumors affecting the major sailvary glands. 90% ocur in the parotid gland, about 9% occur in the submaxillary gland, and 1% occur in the sublingual gland. The sites of origin of tumors of the inor salivary glands, in order of frequency, are the palate, lip, tongue, cheek, anf floor of the mouth. In the case of reported here a tremendous large pleomorphic adenima (weighting 580gm, measuring 18X7cm) occuerd in the submaxilly gland which had been growing for about 20 years.