pharyngeal myiasis caused by sheep botfly, oestrus ovis (diptera: oestridae) larva, tabriz, east azarbaijan province, iran: a case report

myiasis is caused by the larvae of flies infesting animal or human tissues and organs. this report aims to present a case of pharyngeal myiasis caused by the larvae of oestrus ovis (diptera: oestridae). a 55-yr old drug addict living in the shahindeje village of western azerbaijan province, northwestern iran was referred to the emam reza hospi­tal in tabriz, having a medical history of chronic obstructive pulmonary disease (copd) and hospitalized due to respiratory distress, 20 days ago. he was intubated with a mechanical ventilator (mv) because of his respiratory distress condition. there was an evidence of the presence of pulmonary nodules in his lungs following diagnosis, and a ct scan revealed a cavity in his lung. during the nasogastric intubation procedure, a larva was seen emerging from the patient’s mouth by one of the staff of the intensive care unit of the hospital. a laboratory diagnosis was per­formed in the entomology department of the school of medicine, tabriz university of medical sciences. interest­ingly, larvae of o. ovis were identified and confirmed following the laboratory proceedings.