1/8. A scalp lesion over an extracerebral mass: a sign of a radiation-induced meningioma.radiation-induced meningiomas have a characteristic biological behaviour, so that their recognition is important as regards follow-up. We stress the importance of a scalp lesion over the meningioma on magnetic resonance imaging as a sign of previous radiotherapy.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
2/8. Hereditary intraosseous vascular malformation of the craniofacial region: imaging findings.Benign vascular lesions can be classified into two categories depending on clinical behaviour and endothelial cell characteristics: neoplasms (haemangiomas) and vascular malformations. However, intraosseous vascular anomaly, previously called intraosseous haemangioma, is a very rare malformation. In our previous study, we described the first hereditary form of intraosseous vascular malformation of the craniofacial region, vascular malformation osseous (VMOS). Characteristic findings are autosomal recessive inheritance, severe and diffuse intraosseous vascular malformation in all craniofacial bones without soft tissue involvement and associated mid-line abnormalities such as umbilical hernia and supra-umbilical raphe. In this paper, we discuss the imaging findings of this new disorder in detail.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
3/8. High-dose radiation-induced meningioma in children - case report and critical review of the literature.OBJECT: High-dose radiation-induced meningiomas in children are a rare occurrence. We discuss the clinical data and the differences of these rare tumors from those of spontaneous counterpart and radiation-induced meningiomas of the adult population. CASE REPORT: We report a case of meningothelial meningioma, which occurred in a 9-year-old boy who underwent radiotherapy for a parieto-occipital cutaneous angioma. In addition, we collected 18 cases of high-dose radiation-induced meningiomas in children from a literature review with medline. RESULTS: radiation-induced meningiomas in children show a female predominance, a short latency period that seems to be related to the age at irradiation, and an aggressive behaviour. CONCLUSION: Exposure to the potentially carcinogenic effects of radiotherapy should be reserved only for tumors that demonstrate subsequent progression. A meticulous follow-up of patients treated with radiation therapy is mandatory.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
4/8. Segmental haemangioma of infancy of the lower limb with skeletal overgrowth.A female infant presented at 3 months of age with vascular lesions involving the left lower limb and left side of the vulva. At birth, the left leg was thinner than the right, but equal in length. She had macular, reticulate, bluish discolouration covering most of the skin of the involved leg with superimposed cherry-red papules, most dense over the proximal portion. The macular component showed evidence of improvement within the first few months of life. Papular and nodular components over the leg and the vulva progressively increased in size and thickness until the age of 10 months. These elements had the appearance and behaviour typical of haemangioma of infancy. Regression of these lesions started at the age of 15 months. By the age of 6.5 months, the involved leg was no longer thinner than the right, but the left leg and foot had grown longer. Leg length discrepancy peaked at 2.4 cm at the age of 2 years. The most rapid phase of relative growth discrepancy of left and right leg bones was contemporaneous with the growth phase of the haemangioma. Radiological investigations and histopathology have been consistent with haemangioma of infancy. GLUT-1 immunostaining of the lesion was positive.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
5/8. angiomyolipoma of the liver.Hepatic angiomyolipoma is a rare tumour of the liver. Its behaviour is benign and this paper reports the first case described in australia. A review of the literature suggests that the use of ultrasonography, computerized tomography and angiography should enable pre-operative diagnosis to be made with relative certainty, yet the difficulties with histological diagnosis, particularly on needle biopsy, may necessitate resection.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
6/8. Haemangiosarcoma following irradiation of a haemangioma of the face. (Case report).The malignant complications of irradiating benign conditions are well known and fortunately less frequent than in a previous era of widespread use of superficial roentgen therapy. However, because of the long latent period from exposure to irradiation until the development of the tumour, the clinician must continue to be alert. The behaviour and treatment of a haemangiosarcoma occurring 18 years after irradiation of a haemangioma is described.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
7/8. Epitheloid hemangiomatosis mistaken for carcinomatosis.We present a unique case of intra and extra-peritoneal epitheloid hemangioma which was mistaken for diffused carcinomatosis, representing a clinical-pathological problem, and emphasizing the unpredictable behaviour of this tumour. We are dealing with epitheloid vascular tumours, and briefly touch on the differential diagnosis, the principle of biological, pathological and clinical behaviour. knowledge of this entity would provide an accurate diagnosis and would hence improve dealing with the problem. The conclusion is that this group of Histiocytoid-epitheloid vascular lesions have varying biological potential and this unusual functional state represents a large spectrum of cells, from normal to neoplastic endothelium.- - - - - - - - - - ranking = 2keywords = behaviour (Clic here for more details about this article) |
8/8. Tonsillar leiomyoma.Tumors of smooth muscle origin are rare in the oral cavity. To date, only eighty-three cases of oral leiomyomas have been reported. A first case of tonsillar leiomyoma in a 73-year-old male is presented. The theories of origin and the various histologic types of oral leiomyomas are discussed. leiomyoma can easily be confused with other spindle-cell tumours. Special stains are necessary to reach a correct diagnosis. It is sometimes difficult to differentiate benign leiomyoma from malignant leiomyosarcoma. The use of mitotic figure count to indicate malignant behaviour is not always reliable. The need for wide surgical excision of the tumour, complete sectioning and examination of the specimen and meticulous follow-up of the patient for evidence of recurrence are emphasized.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |