Figure 2.

Histologic features identified on confocal laser endomicroscopy images of various brain tumors and matching hematoxylin-eosin images. We identified three types of autofluorescence: scant (A), dense (B), and patchy (C). We also identified the following image characteristics as separate histologic features: diffuse intracytoplasmic fluorescence (D), epithelioid features (E), hypercellularity (F–H), filamentous structures (I), and fibrous structures (J). An example of characteristic identifiable tissue architecture as a histologic feature is shown in (F). Examples of characteristic identifiable features of cell morphology and atypical cells are shown in (G) and (H). An example of psammoma bodies is presented in (J). We classified the brightness of background (extracellular space) as dark (A–D) or bright (F–I). Used with permission from Barrow Neurological Institute, Phoenix, Arizona.