{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T14:30:35Z","timestamp":1769092235849,"version":"3.49.0"},"reference-count":6,"publisher":"BMJ","issue":"8","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2020,7,4]]},"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:p>A 60-year-old man was referred to the interventional pulmonology clinic with a large right-sided intraparenchymal lung mass and a second, smaller lesion in the left lower lobe, accompanied by intermittent haemoptysis, fever, chills, productive cough of white phlegm as well as dizziness and weakness. He had presented previously and was being evaluated for the possibility of malignancy. Investigations had revealed \u2018hooklets\u2019 (protoscolices) of hydatid cysts, most likely representing the parasite <jats:italic>Echinococcus<\/jats:italic>. Successful surgical excision of the affected lobe, lung decortication, partial pleurectomy and pneumolysis of the adhesions was performed, along with long-term antiparasitic therapy. The initial differential diagnosis for this patient was challenging and required multimodal investigations. The patient made good recovery and continued to be followed by infectious disease specialists for management of antiparasitic therapy.<\/jats:p>","DOI":"10.1136\/bcr-2020-234578","type":"journal-article","created":{"date-parts":[[2020,8,25]],"date-time":"2020-08-25T03:20:28Z","timestamp":1598325628000},"page":"e234578","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Primary pulmonary cystic <i>Echinococcus<\/i> in an immunocompetent patient"],"prefix":"10.1136","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7385-4790","authenticated-orcid":false,"given":"Nicholas","family":"Villalobos","sequence":"first","affiliation":[{"name":"Pulmonary, Critical Care, and Sleep Medicine, University of New Mexico, Albuquerque, New Mexico, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Gabriela","family":"Cabanilla","sequence":"additional","affiliation":[{"name":"Infectious Diseases, University of New Mexico, Albuquerque, New Mexico, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William Paul","family":"Diehl","sequence":"additional","affiliation":[{"name":"Pulmonary, Critical Care, and Sleep Medicine, University of New Mexico, Albuquerque, New Mexico, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2020,8,24]]},"reference":[{"key":"2025082710201963000_13.8.e234578.1","unstructured":"Center for Disease Control and Prevention . 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