Female sumo wrestlers step into the ring and fight for visibility in Japan's male-dominated sport www.cbsnews.com

Japan's national sport of sumo conjures up visions of very large loincloth-clad men crashing into one another.
At just over 50 pounds, Mei Kigawa may not look like a sumo wrestler, but the shy fifth-grader is no pushover.
Aside from modified attire and separate weight classes, the rules for female sumo wrestlers are identical to professional sumo.
All women sumo wrestlers take pride in Japan's national sport and want to compete there," Yamanaka said.
Without the big arenas, TV exposure, and lavish budget of pro sumo, women's amateur sumo remains a tiny niche of the sports universe.