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Richland company's Cesium-131 seeds successfully used in surgery, officials say

IsoRay’s Cesium-131 has been used for treating colorectal cancer, the Richland-based medical company announced Thursday. Jan. 21

Dr. Bhupesh Parashar, Dr. A Gabriella Wernicke and Dr. KS Clifford Chao from the Department of Radiation Oncology, and Dr. Jeffery Milsom from the Department of Gastrointestinal Surgery, at Weill Cornell Medical Center in New York performed the world’s first Cesium-131 implant for the treatment of colorectal cancer in October.

A 38-year old patient, with locally recurrent colon cancer, tolerated the procedure well and had no evidence of cancer recurrence or any side effects that can be attributed to the Cesium-131 seed implant at the last follow-up visit, said the company in a news release, quoting one of the doctors.

Cesium-131 is now being used successfully to treat lung, head and neck, ocular melanoma and prostate cancers.

— Pratik Joshi: 582-1541;; Business Beat blog at

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