Secondary bronchogenic pulmonary hydatidosis: a rare entity

<b>Introduction:</b> Hydatid disease is a world wide health problem. Secondary beonchogenic hydatidosis (SBH) is a rare complication of primary hydatid cyst of the lung. It consists on the seeding of the bronchial tree by the content of non suppurative hydatid cyst from the homo or contralateral lung, ruptured spontaneously or after surgical treatment. The development of cysts occurs on along the bronchial axes, in a systematized pulmonary territory. <b>Methods:</b> Descriptive retrospective study of bronchogenic hydatidosis operated in our surgical department from 1999 to 2020 <b>Results:</b> During the study period, 12 patients were operated for SBH. There were 6 male and 6 female. The average age was 37years. Seven patients had a history of complicated hydatid cyst operated on. Symptomatology was made of cough with haemoptoic sputum in 9 cases, fever with chest pain in one case. The SBH was discovered during the follow up radiological assessment after the first surgery in 2 cases. Bronchoscopy&nbsp;was done for 9 patients, and showed the presence of whitish formation in subsegmental bronchus in 5 cases. All patients had a chest CT scan reveling the development of cysts in systematized lung territory.&nbsp;The cysts were localised in the right lung in 7 cases, and in the left lung in 5 cases. Four patients had antihelmintic therapy before surgery. All patients were operated on by a posterolateral thoracotomy. The gesture consisted on 5 lobectomy, 3 segmentectomy and 4 cystectomy. All patients were treated postoperatively by 3 months course with Albendazole. <b>conclusion:</b> SBH is a rare complication of lung hidatid cyst. Surgery remains the only effective treatment&nbsp;consisting on regulated resection if the number of cysts is important, and cystectomy if the number is limited.