halo reach beta

Nuggets coach George Karl has another blood clot in his right leg as he recovers from radiation and chemotherapy treatment for throat and neck cancer.

Karl's partner, Kim Van Deraa, wrote on her blog this weekend that the 58-year-old coach was rushed to the hospital Friday afternoon with the clot. She said doctors were trying to determine the cause because Karl already is on blood-thinning medication.

Van Deraa also writes that doctors reinserted a filter into his abdomen. The filter had been removed two weeks ago.

The filter prevents the clots from traveling to his heart or lungs. It initially was inserted in March when Karl was first treated for blood clots.

Van Deraa and Karl, who are raising their 5-year-old daughter, Kaci, together, had been writing increasingly upbeat blog posts about Karl's slow recovery from squamous cell carcinoma.

But the latest post said Karl mentioned his right big toe was hurting Friday and that it felt swollen, so Van Deraa called Karl's doctor, who set up an ultrasound.