1/77. meningioma after radiotherapy for Hodgkin's disease.The most common second primary tumors after treatment of childhood Hodgkin's disease are leukemia, lymphoma, breast cancer, soft tissue sarcoma, and thyroid cancer. Although intracranial meningioma has been reported after radiotherapy to the scalp for benign conditions and for intracranial primary brain tumors, this appears to be an extremely rare sequelae of treatment for Hodgkin's disease. The authors describe a 15-year-old boy who underwent radiotherapy for Hodgkin's disease and in whom a meningioma developed in the posterior fossa 27 years later.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
2/77. Thorotrast-induced haemangioendothelial sarcoma--a lesson from the past.Complications following a carotid arteriogram done in 1947 with Thorotrast are described in a 47-year-old man who subsequently died from them in 1970. They included a local cervical granuloma with associated haemangioendothelial sarcoma, chromosome changes characteristic of radiation damage and widespread haemangioendothelial sarcomatous deposits in brain, lung, liver, probably arising from multicentric primary sites in the bone marrow. A survey of the use of Thorotrast as a contrast medium in australia and new zealand showed that its use was extremely limited. The prinicpal complications seen have been two cervical granulomas and one hepatoma.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
3/77. radiation-induced tumors of the central nervous system occurring in childhood and adolescence. Four unusual lesions in three patients and a review of the literature.The authors report four very rare radiation-associated tumors (or radiation-induced tumors; RITs) of the central nervous system (CNS) and review the literature on this topic. The purpose of this study was to determine the possible relationship between the harmful effects of radiation therapy, the shortest and the longest interval between the time of irradiation and the occurrence of the secondary tumor, and possible predisposing factors. The tumorigenic effects of therapeutic irradiation of the CNS have been mentioned in the literature, but the authors' literature search did not disclose either many reports of cases such as their own or a satisfactory and concise discussion on the different aspects of the late and catastrophic complications of this method of adjunct therapy to the CNS. Four rare cases of RIT in three patients are presented: a unique case of intradural meningioma of the cervical spine, which was irradiated successfully only for the patient to present with a new high-grade cerebral astrocytoma 4 years later, a paraventricular cavernoma and a fronto-temporo-orbital chondrosarcoma. These second RITs became symptomatic in the 17th, 16th and 15th years of life, respectively, in these young patients. The primary lesions were ependymomas, two in the IV ventricle and one in the left hemisphere. The time intervals between radiation and secondary tumor presentation were 14 and 18 years, 9 years and 28 months, in the order in which these patients presented. All the patients survived the second operation except the one with chondrosarcoma, who died in spite of repeated surgical interventions and adjunct therapies. It is concluded that the development of secondary RITs does not necessarily require a very long time interval; that although sarcomas are the most common RITs of the CNS in childhood and adolescence, benign and other rare and curable lesions may also occur in the field or vicinity of the field of radiation; and that in view of the possibility of occurrence of different types of RITs after varying time intervals in a single patient, whole-life followup of similar patients is mandatory.- - - - - - - - - - ranking = 12.646065377843keywords = central nervous system, nervous system (Clic here for more details about this article) |
4/77. Late effects of therapy of thalamic and hypothalamic tumors in childhood: vascular, neurobehavioral and neoplastic.The late effects in children with hypothalamic and thalamic tumors relate to the effects of the tumor on the surrounding brain, the effects of surgery, radiotherapy (RT) and, to a lesser extent, chemotherapy. The clinical manifestations of late effects include endocrinologic dysfunction, neurocognitive sequelae, behavioral problems and second neoplasia. The prevention of late effects is an integral part of current treatment strategies. early diagnosis, a rational use of surgery, and deferral of RT are the mainstays of the modern treatment in these patients. The improvement of RT techniques and the use of radioprotective compounds may further help spare normal brain tissue. A better understanding of chemotherapy use and the development of newer agents may increase efficacy, reduce side effects and allow deferral of RT in a greater percentage of patients. Finally, an aggressive management of endocrinological problems, physical and cognitive rehabilitation as well as psychological and school support help provide these children with maximal function within their potential.- - - - - - - - - - ranking = 2keywords = brain (Clic here for more details about this article) |
5/77. radiation-induced cavernous angioma mimicking metastatic disease.patients with carcinoma of the lung typically have a limited life expectancy especially after developing metastatic disease in the brain. New enhancing lesions in the brain are usually felt to represent new areas of metastasis. Recently, there have been several case reports of cavernous angiomas appearing years after radiation to the brain, typically in children. We present a case of a 41-year-old gentleman with carcinoma of the lung with metastasis to the brain who received postoperative radiation. Five-and-a-half years later he presented with a new enhancing lesion of the brain with surrounding vasogenic oedema, thought to represent a metastatic tumour. It proved is the a radiation-induced cavernous angioma.- - - - - - - - - - ranking = 5keywords = brain (Clic here for more details about this article) |
6/77. glioblastoma multiforme occurring in a patient treated with gamma knife surgery. Case report and review of the literature.Stereotactic radiosurgery is being increasingly advocated as the primary modality for treatment of vestibular schwannomas (VS). This modality has been shown to arrest tumor growth, with few associated short-term morbidities, and with possibly better hearing and facial nerve preservation rates than microsurgery. radiation-induced oncogenesis has long been recognized, although stereotactic radiosurgery de novo induction of a secondary tumor has never been clearly described. The authors report on a patient with a VS who did not have neurofibromatosis Type 2 and who underwent gamma knife surgery (GKS). This patient required microsurgical removal of the VS within 8 months because of development of a tumor cyst with associated brainstem compression and progressive hydrocephalus. The operation resulted in clinical stabilization and freedom from tumor recurrence. Seven and a half years after undergoing GKS, the patient presented with symptoms of raised intracranial pressure. magnetic resonance imaging demonstrated a new ring-enhancing lesion in the inferior temporal lobe adjacent to the area of radiosurgery, which on craniotomy was confirmed to be a glioblastoma multiforme (GBM). Despite additional conventional external-beam radiation to the temporal lobe, the GBM has progressed. Whereas this first reported case of a GBM within the scatter field of GKS does not conclusively prove a direct causal link, it does fulfill all of Cahan's criteria for radiation-induced neoplasia, and demands increased vigilance for the potential long-term complications of stereotactic radiosurgery, and reporting of any similar cases.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
7/77. Malignant glioma as a secondary malignant neoplasm after radiation therapy for craniopharyngioma: report of a case and review of reported cases.BACKGROUND: The development of a secondary neoplasm in childhood cancer survivors attains growing importance due to the reported excellent survival and therefore the long exposure to potentially carcinogenic effects of treatment. CASE REPORT: We report a 14-year-old girl in whom a large craniopharyngioma (CP) was diagnosed. After surgery, radiation therapy (RT) was given for residual tumour. Discrete progression necessitated further surgery, resulting in permanent tumour control. Soon after the second surgery hypothalamic-pituitary dysfunction developed together with obesity. Supportive hormone therapy was initiated. growth hormone (GH) therapy was also given for 15 months. Four years after the diagnosis, a cerebropontine anaplastic astrocytoma WHO grade III was detected, with the main lesion being at the dorsal edge of the irradiated area. The girl died 1 month later from this secondary presumably radiation-induced tumour. Only recently a second child with RT for a CP was diagnosed with malignant glioma in our hospital. case reports IN THE literature: 12 other cases of malignant glioma have been reported after RT for CP. Including our present cases, the mean latency period was 10.7 years (median 9.6 years). However, the shortest latency periods were found in patients who had received GH therapy. In numerous cases, the secondary tumour was seen at the edge of the irradiated volume, and not in the region with the highest absorbed dose. CONCLUSIONS: Therapy-induced secondary gliomas after treatment of CP or other intracranial tumours are rare but dramatic late events with a very poor prognosis. Including our own 2 patients, we reviewed 14 cases of CP with occurrence of a secondary, probably radiation-induced malignant glioma. The short latency periods for patients treated with GH is remarkable. We therefore suspect that GH therapy may accelerate the development of a secondary brain tumour. We are reluctant to recommend GH therapy in conventionally irradiated CP patients. In order to seriously answer the questions about therapy-induced secondary neoplasms, a life-long follow-up is mandatory for all patients who are survivors of childhood cancer.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
8/77. Two metachronous tumors in the radiotherapy fields of a patient with Li-Fraumeni syndrome.A woman with a family history of brain tumors in her daughter and sister presented with a breast cancer. She subsequently developed two metachronous primary tumors: a small-cell lung cancer and a colon carcinoma. These tumors arose within the internal mammary radiotherapy field and within the field irradiated for ovariolysis. The p53 gene was analyzed in whole blood lymphocytes using a functional assay developed in yeast saccharomyces cerevisiae, which tests the transcriptional competence of p53. dna from the colon cancer cells was analyzed by polymerase chain reaction and sequencing. The patient had a germline-inactivating p53 mutation, confirming the diagnosis of li-fraumeni syndrome (LFS). The colon tumor and the lung tumor both conserved the mutant p53 allele but had lost the wild-type allele. This observation and the experimental data suggest an abnormal sensitivity of LFS patients to radiogenic carcinogenesis. The indications and extent of radiotherapy in patients with a clinical or molecular diagnosis of LFS should be discussed individually and should take into account the risk of secondary neoplasms arising in the radiation fields.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
9/77. radiosurgery-induced brain tumor. Case report.The authors describe a case of glioblastoma multiforme (GBM) associated with previous gamma knife radiosurgery for a cerebral arteriovenous malformation (AVM). A 14-year-old boy had undergone radiosurgery for an AVM, which was performed using a 201-source 60Co gamma knife system at another institution. The maximum and margin radiation doses used in the procedure were 40 and 20 Gy, respectively. One year after radiosurgery, the patient noticed onset of mild left hemiparesis due to radiation necrosis. Six and one-half years after radiosurgery, at the age of 20 years, the patient experienced an attack of generalized tonic-clonic seizure. Magnetic resonance (MR) imaging revealed the existence of a brain tumor in the right parietal lobe. The patient underwent an operation and the histological diagnosis of the lesion was GBM. Ten months following the operation, that is, 99 months postradiosurgery, this patient died. To the best of the authors' knowledge, this is the first reported case of a neoplasm induced by radiosurgery for an AVM and the second case in which it occurred following radiosurgery for intracranial disease.- - - - - - - - - - ranking = 5keywords = brain (Clic here for more details about this article) |
10/77. Multiple cysts in the cerebral white matter: a rare complication of whole brain radiation therapy.We describe a patient with multiple cysts in the cerebral white matter, several years after whole brain radiation therapy (WBRT) for a solitary cerebellar metastasis of a lung carcinoma. MR images of the brain show diffuse white matter changes, 1 year after radiation, and cyst formation in the white matter, starting 3.5 years later. We conclude that cysts in the cerebral white matter can be a late stage of white matter damage after whole brain radiation therapy in long-term survivors with brain metastases.- - - - - - - - - - ranking = 8keywords = brain (Clic here for more details about this article) |
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