Sarcoma

A sarcoma (from the Greek 'sarx' meaning "flesh") is a cancer that arises from transformed connective tissue cells. These cells originate from embryonic mesoderm, or middle layer, which forms the bone, cartilage, and fat tissues.

This is in contrast to carcinomas, which originate in the epithelium. The epithelium lines the surface of structures throughout the body, and is the origin of cancers in the breast, colon, pancreas.

However, due to an evolving understanding of tissue origin, the term "sarcoma" is sometimes applied to tumors now known to arise from epithelial tissue. The term soft tissue sarcoma is used to describe tumors of soft tissue, which includes elements that are in connective tissue, but not derived from it (such as muscles and blood vessels).

Chavez

'Fake' Or 'Deadly': Venezuela's Fate Hangs On Chavez's Cancer

Venezuelan politics has almost willingly let President Hugo Chavez's terminal illness hijack the ongoing presidential election campaign, which would have otherwise been its best chance to reassess his 13-year-long governance and revolutionary brand of socialism.
Amrutha Gayathri Apr 11, 2012
Venezuelan President Hugo Chavez arrives at a rally with supporters in Caracas.

Venezuelan President Chavez Flies to Cuba for Surgery

Venezuelan President, Hugo Chavez, will fly to Cuba this Friday in preparation for the surgery he will undergo next week. Chavez has a recurring growth in his pelvic region. He was operated on in the same area last year in June when he was diagnosed with cancer.
Esther Tran Le Feb 24, 2012
New York Giants linebacker Mark Herzlich (58) stretches during practice for the NFL Super Bowl XLVI in Indianapolis February 2, 2012.

Cancer Survivors in the NFL's Super Bowl Win it All This Year

There can only be one winner in the NFL's Super Bowl, but for two opposing players in this Sunday's game between the New York Giants and the New England Patriots, success in a much bigger battle with much higher stakes has already been achieved: victory over cancer.
J.J. McGrath Feb 05, 2012