Malignant neoplasms of submandibular or sublingual glands
Definition
Salivary gland tumours can show a striking range of morphological diversity between different tumour types and sometimes within an individual tumour mass. In addition, hybrid tumours, dedifferentiation and the propensity for some benign tumours to progress to malignancy can confound histopathological interpretation. These features, together with the relative rarity of a number of tumours, can sometimes make diagnosis difficult, despite the abundance of named tumour entities. The increasing use of pre-operative fine needle aspiration biopsies also needs to be taken into account, as artifactual changes may be superimposed on the tumours. Unfortunately, the morphological variability of these tumours is mirrored by the immunocytochemical profiles, so that special stains are rarely useful in routine diagnosis of salivary gland epithelial neoplasms.
Exclusions
4 subordinate codes
Nearby in Malignant neoplasms of lip, oral cavity or pharynx
2B60Malignant neoplasms of lip2B61Malignant neoplasms of base of tongue2B62Malignant neoplasms of other or unspecified parts of tongue2B63Malignant neoplasms of gum2B64Malignant neoplasms of floor of mouth2B65Malignant neoplasms of palate2B66Malignant neoplasms of other or unspecified parts of mouth2B67Malignant neoplasms of parotid gland