Is hurtle cell neoplasm defined as cancer?

Not necessary. Hurtel cell neoplasm can be adenoma (not cancer) or carcinoma (cancer). There is not much difference between the two with regards to age, sex, or history of head and neck radiation. However, hurtle cell carcinoma (cancer) tends to be larger in size (4.0 +/- 0.4 cm) compared with hurtle cell adenoma (2.4 +/- 0.2 cm).