UNASSIGNED: Introduction. True @entity3905 , also known as @entity6962 , is a rare @entity5 of the salivary gland composed of both malignant epithelial and malignant mesenchymal elements. Frequently @entity6962 arises in the background of a preexisting @entity5123 ; however, if no evidence of benign mixed @entity5 is present, the lesion is known as @entity6962 "de novo." We reported the first case of true @entity3905 composed of high grade @entity3975 associated with @entity421 . Case Presentation. A 69-year-old Caucasian male came to our department complaining of the appearance of an asymptomatic left submandibular neoformation progressively increasing in size over 3 months. We opted for surgical treatment. Histological examination confirmed the diagnosis of @entity6962 with the coexistence of high grade @entity3975 and @entity421 . Conclusion. To the best of our knowledge, in the true @entity3905 , @entity3975 associated with @entity421 has never been previously reported.

@entity3975 Associated with @entity421 in a True XXXX of the Submandibular Region.

@entity3975 :: ('MESH:D018277', 'Disease') :: ['mucoepidermoid carcinoma'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity3905 :: ('MESH:D018198', 'Disease') :: ['malignant mixed tumor of the submandibular gland', 'malignant mixed tumor'] @entity421 :: ('MESH:D012516', 'Disease') :: ['osteosarcoma'] @entity6962 :: ('MESH:D002296', 'Disease') :: ['carcinosarcoma'] @entity5123 :: ('MESH:D008949', 'Disease') :: ['pleomorphic adenoma']
@entity3905 :: (MESH:D018198,Disease) :: ['Malignant Mixed Tumor']
