The following information was received from the State of
California via email:
On February 5, 2009, [the Radiation Safety Officer (RSO) for the] City of Hope/Beckman Research Institute, contacted LA County Radiation Management regarding a misadministration that occurred at approximately 6:00 pm on February 4, 2009. The incident involved HDR treatment of the wrong site.
Using HDR, a patient was scheduled for groin sarcoma therapy treatment. The treatment planning comprised of administration of approximately 4000 cGy to the tumor. The dose is to be administered in 10 fractions of 400 cGy/fraction; 2 fractions per day for 5 days. Six catheters to be administered/fraction. Per [the RSO], an error was made in the interpretation of the CT data, and therefore, the wrong distance was calculated. On February 4, 2009, the first day of the treatment, the catheters administered went to the body, past the tumor site, then to the outside of the thigh. [The RSO] stated that there was no dose administered to the tumor. All the dose was administered to the skin of the thigh. The patient had two treatments, and received approximately 800 cGy to the skin of the thigh.
"A written report will be submitted by the licensee within 15 days.
Based on the current report of 800 rad to the wrong treatment site (skin), this medical event does not meet the criteria for an Abnormal Occurrence (see SA-300, Appendix section 6.3.IV).
CA 5010 Number: 020509
A Medical Event may indicate potential problems in a medical facilities use of radioactive materials. It does not necessarily result in harm to the patient.