Owing to the greater skill in the diagnosis of tumors, especially those of the internal organs, they are now recognized more frequently and more deaths are correctly ascribed to them.

Deaths from tumors were formerly often purposely concealed and attributed to some other cause.
No age is immune to tumors.

They may be present at birth or develop shortly afterwards.

The age from five to twenty years is the most free from them, that from forty-five to sixty-five the most susceptible, particularly to the more malignant forms.
A tumor is a local disease.

The growing tissue of the tumor is the disease, and it is evident that if the entire tumor were removed the disease would be cured.