Other less frequent malignant tumours included acinic
cell carcinoma, salivary duct carcinoma and non-Hodgkin lymphoma comprising of 3 cases (3.
Three false-negatives for malignancy (4%) were 2 monomorphic adenomas diagnosed as high-grade muco-epidermoid carcinoma and acinic
cell carcinoma, and a benign cyst diagnosed as acinic
cell carcinoma constitute approximately 2-4% of all salivary gland neoplasms.
cell carcinoma of the parapharyngeal space: Case report.
The fact that MASC, like its breast counterpart, is associated with rearrangement of the ETV6 gene has been a great benefit in the early identification and characterization of this entity from morphologic mimickers (predominantly acinic
cell carcinoma [AciCC] and adenocarcinoma, not otherwise specified), which has allowed a relatively quick and robust recognition of this entity.
The parotid acinic
cell carcinoma in our patient seemed to be unrelated to her generalized enchondromatosis.
cell carcinoma shows overlapping architectural features with MASC, (3,8) but it typically shows basophilic cytoplasm containing periodic acid-Schiff-positive zymogen granules ("blue dot tumor"; Figure 2).
Non odontogenic tumor with clear cell feature include Acinic
cell carcinoma, squamous cell ca with clear cell, clear cell oncocytoma, glycogen rich salivary tumor, hyalinising clear cell carcinoma, sebaceous cell tumor, epithelial myoepithelial ca, clear cell variant of adenocarcinoma of salivary gland tumor.
Eneroth reported that 80 to 90% of all malignant lesions of the salivary glands in children were mucoepidermoid, adenoid cystic, or acinic
cell carcinomas; the corresponding figure in adults was only 45%.
c) Malignant Salivary Gland neoplasm: Acinic
cell carcinoma (AcCC) is a malignant epithelial salivary gland neoplasm that demonstrates serous acinar cell differentiation with cytoplasmic zymogen secretory granules.
Specimen Diagnosis Review Diagnosis 1 Biopsy Mucoepidermoid Acinic
cell carcinoma carcinoma Table 5.