منابع مشابه
Tasmanian devil facial tumour disease: lessons for conservation biology.
Tasmanian devil facial tumour disease is an infectious cancer that threatens the largest surviving marsupial carnivore with extinction. After emerging in 1996, it has spread across most of the range of the species, leading to a population decline of more than 60%. This bizarre disease, in which the cancer cells themselves are the infective agent, illustrates some important general principles ab...
متن کاملTumour radiobiology beyond fractionation
Historically it has been shown repeatedly that single high doses of radiation do not allow a therapeutic differential between tumor and critical normal tissues but dose fractionation does. The purpose of conventional dose fractionation is to increase dose to the tumor while preserving normal tissue function. Tumors are generally irradiated with 2Gy dose per fraction delivered daily to a more or...
متن کاملFacial nerve palsy by nasal tumour--a case report.
A case of an adenoid cystic carcinoma of the minor salivary glands of then nasal cavity is reported. The tumour had spread locally and by perineural spread to the internal auditory mentus, causing facial nerve palsy.
متن کاملFacial palsy with severe hypertension due to renal tumour.
Bell's palsy is usually the diagnosis for reversible lower motor neurone facial paresis of abrupt onset in children. We report on a girl in whom facial paresis led to the detection of severe hypertension produced by a renal tumour. Case report A 14-year-old girl developed right facial paresis which spontaneously recovered over four weeks. One month later she developed a similar weakness on the ...
متن کاملThe Tasmanian Devil and Devil Facial Tumour Disease
The global extirpation of the world’s apex predator fauna is consistently highlighting their important functional role in preserving biodiversity and maintaining ecosystem resilience. Apex predator declines and extinctions are promoting more invasive and homogenised ecosystem states, linked with secondary species extinctions, changes to community composition, and redefined carnivore guilds. In ...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Medicine
سال: 1935
ISSN: 0035-9157
DOI: 10.1177/003591573502800721