This is the short story: When there's an error in a cells genome (DNA) regulation, the cell may start replicating uncontrollably. This causes a tumor.
Do you want the long story?
A hard tumor is not a tumor
Wilms' tumor is a type of malignant tumor
where is the tumor
A tumor does not have a heart.
A parotic tumor is a tumor on your largest salavary gland in front of your ear.
metastasis tumor
benign tumor
A tumor is a neoplasm.
Chloroma
Its a malignant tumor.
a tumor :Da tumor :Da tumor :D
A benign tumor does not spread. If a tumor spreads, it is malignant.