Manufacturer representative observed this case, wherein 9 individual isoray cesium-131 sources ("seeds") were implanted into a vulvar tumor.This representative reports that rather than the customary 1.0 cm spacing of sources implanted into the tumor, the physician placed the sources at 0.5 cm apart.Manufacturer believes that the placing of sources closer together than 1.0 cm may have caused excessive radiation dose to be deposited, thereby possibly contributing to this adverse event.Additionally, prior to the cesium-131 seed implant this patient underwent a course of external beam radiation therapy, which on its own or in combination with the cesium-131 seed implant may have contributed to this adverse event.Manufacturer has made multiple attempts to contact the physician involved in this case in order to obtain more specifics, however no reply has been received.
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During a customer service follow-up with the facility, 22 days post implant, isoray was notified that the patient "got proctitis and a colorectal surgeon diverted her with a colostomy." while clarifying if the issue had connection to the implant, the facility suggested that the temporal course of the complication suggests that the implant was associated with the development of the adverse event.
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