Characteristic properties - microfollicular proliferation
Follicular carcinoma - Case 3
Follicular adenoma - Case 17

Micro- and normofollicular proliferation is demonstated in the first row and microfollicular proliferation is demonstrated in the second row. There is no colloid in the background. The follicular cells frequently contain small nucleoli. The presence of prominent nucleoli has relevance in oxyphilic cells where this property increases the possibility of tumorous origin.