Why are carcinomas more common than other forms of cancer?

Question

Explain.

Answer 1

"One of the fundamental features of cancer is tumor clonality, the development of tumors from single cells that begin to proliferate abnormally..."
Carcinomas are malignancies of epithelial cells. And sarcomas are malignancies of fibrous tissue, muscle, bone, connective tissues and cartilage.
Epithelial cells divide more frequently than connective tissue cells, therefore giving rise to more chances for error. Though most cancers are formed by multi step processes, 90% of human cancers will arise from carcinomas and 10% from sarcomas.

Answer 2

Carcinoma cancers are cancers that start in the epithelial tissue. Epithelial tissue covers the surface of the body (skin) as well as the surface of GI tract (mucus membrane) and internal cavities and lumens of the body. Skin alone is the largest organ of body and considering that it is in constant contact with chemicals and exposure to the Sun, it has a higher risk of becoming cancerous than other organs. Carcinoma cancers are very hostile and can metastasis to other tissues easily.

Answer 3

In medicine, carcinoma is ANY cancer that arises from epithelial cells. It is malignant by definition: carcinomas invade surrounding tissues and organs, and may spread to lymph nodes.

Carcinoma, like all neoplasia, is classified by its HISTOPATHILOGICAL APPEARANCE. Adenocarcinoma and squamous cell carcinoma, two common descriptive terms for tumours, reflect the fact that these cells may have GLANDULAR OR Squamous CELL APPEARANCES respectively. Hope this helps. Will.