Automatic Prediction of Meningioma Grade Image Based on Data Amplification and Improved Convolutional Neural Network

Table 2

Histological subtypes and biological behavioral characteristics of meningioma with high risk of recurrence and invasiveness.

Subtype	WHO classification	ICD-O code
Chordoid meningioma	II	9538/1
Clear cell meningioma	II	9538/1
Atypical meningioma	II	9539/1
Papillary meningioma	III	9538/3
Rhabdoid meningioma	III	9538/3
Anaplastic (malignant) meningioma	III	9530/3