ABSTRACT
Although carcinogenesis is a well-known late side effect of ionizing radiation, development of malignant glioma in patients who have received low dose superficial radiation many years ago for the treatment of tinea capitis has been rarely reported. This is a case report of a patient with glioblastoma multiforme in the parietal lobe after treatment with superficial radiation for tinea capitis 35 years before referral. The patient was a 62- year- old lady who presented with left-sided weakness. Physical examination revealed decreased motor power in the left upper and lower extremities. CT-scan showed a ring-enhancing lesion in the right parietal lobe with peripheral edema. She underwent surgery and histological examination of the lesion was in favor of glioblastoma multiforme. She received post-operative radiotherapy [5400 CGY in 27 fractions] but after six months the tumor recurred. In patients with a history of previous radiation to the head and neck region, and who present with neurological disturbances, a complete evaluation to rule out the presence of a tumor is suggested