The following information was obtained from the Commonwealth of
Pennsylvania via fax:
A patient was undergoing treatment with I-125 prostate seeds on January 20, 2012. The patient was prescribed to receive 110 Gy for a determined prostate volume of 21.08 cc. On March 16, 2012 the patient had a follow up CT scan where the prostate volume was determined to be 47 cc and the D90 to the prostate to be 75 Gy. The oncologist questioned the results and ordered an additional CT scan. On May 16, 2012, a second CT scan was performed to confirm the first CT scan. On May 21, 2012, the radiology oncologist calculated the prostate volume to be 33.59 cc and confirmed the D90 to be 75 Gy. The radiation oncologist has no explanation for the edema.
Cause of the Event: Implant performed using ultrasound, post implant verification via CT.
Actions: There will be a reactive inspection [by the Commonwealth of Pennsylvania]. The radiation oncologist ordered external beam radiation therapy and feels that the total dose is sufficient. Additional follow up with the patient will occur.
PA Report ID No.: PA120018
A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.