What Researchers Did
Researchers conducted a retrospective single-center study on 107 children treated with external radiotherapy for various brain tumors between 1992 and 2012 to describe the incidence and clinical course of radionecrosis.
What They Found
Radionecrosis was suspected in 5 children (4.7%) between 5 and 131 months after radiotherapy, with all 5 having also received cytotoxic chemotherapy. Four of these children presented with neurological symptoms at onset, and all patients showed complete radiological regression of lesions.
What This Means for Canadian Patients
Canadian patients undergoing radiotherapy for brain tumors, especially those also receiving chemotherapy, should be monitored for potential long-term complications like radionecrosis. Early detection and treatment, which can include corticosteroids or surgery, may lead to complete resolution of these lesions.
Canadian Relevance
This study was not conducted in Canada and therefore has no direct Canadian connection.
Study Limitations
The study's retrospective, single-center design and small number of radionecrosis cases limit the generalizability of its findings.