WHO Classification of Tumors

Describes central nervous system tumors that are generally highly malignant, show rapid and aggressive growth, widely infiltrative, and prone to necrosis. They…

Describes central nervous system tumors that are generally malignant and infiltrative. They tend to recur after treatment.

Describes central nervous system tumors that are generally relatively slow growing and somewhat infiltrative. They may recur after treatment.

Describes central nervous system tumors that are generally low malignancy, non-infiltrative, and slow growing. Often they can be cured by surgery alone…

Developed to promote the sequential use of drugs to achieve effective pain relief. The first step is a non-opioid medication (such…

A terminology for coding clinical information in relation to drug therapy, used throughout the WHO Program by member countries and around the…