Explain different types of cancers.

Following are the different types of cancers.
* Carcinomas : These are the cancers of epithelial tissues.
* Sarcomas : These are the cancers of connective tissue.
* Leukemias : These are the cancers of bone marrow stem cells.
* Lymphomas : These are the cancers of the lymphatic system.
* Familial cancers : They are hereditary cancers.
* Sporadic cancers : These are the non hereditary cancers.