Differential diagnostics of oxyphilic lesions (I)
Oxyphilic adenoma - Case 13
Benign hyperplastic nodules - Case 3

There are two main differences between the cytological presentation of the above cases. The more important is the distribution of cells. The tumorous case presents dispersed cells while the non-tumorous case presents compact monolayered sheets. The other less important difference is in the degree of anisonucleosis which is less pronounced in the case of oxyphilic adenoma than in nodular hyperplasia. Nevertheless, the difference between the 2 cases is not absolute. In the right case the probability of an oxyphilic tumor is in the range of 50-75%, while in the left case is in the range of 30-60%.