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Myiasis is an animal or human disease caused by parasitic dipterous fly larvae feeding on the host's necrotic or living tissue. Different classifications of myiasis can be adopted: description of myiasis by the infected area of the host, or accordingly with the biology of the fly species causing the myiasis and its likely effect. In Colombia most of the reported cases of cavity miasis are caused by Cochiliomyia hominivorax. A malnourished female patient is described with perforations in the nasal septo. A nasal endoscopy was performed to this patient and eleven alive larvae extracted and sent to the Laboratory of Entomology at the National Institute of Health. There, the larvea were given the appropriate development conditions for 22 days to finally obtained adult flies, which were identified in the Calliphoridae family, the Cochiliomyia gender and the hominivorax species.
Keywords : Myiasis; diptera.