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His CT chest scan showed consolidation in the lingula and left lower lobe. Histopathology of the specimen obtained from cryobiopsy of the lung lesion showed a dense monomorphic lymphoid infiltrate, and immunohistochemistry confirmed the diagnosis of MALT lymphoma. The prognosis of pulmonary MALT lymphomas is good with &gt;80% 5-year survival rates. This case highlights that MALT lymphoma should be considered as a differential diagnosis while evaluating cases with non-resolving consolidation.<\/jats:p>","DOI":"10.1136\/bcr-2023-255075","type":"journal-article","created":{"date-parts":[[2024,3,8]],"date-time":"2024-03-08T13:30:17Z","timestamp":1709904617000},"page":"e255075","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Non-resolving pneumonia: primary pulmonary MALT lymphoma"],"prefix":"10.1136","volume":"17","author":[{"given":"Rinoosha","family":"Rechal","sequence":"first","affiliation":[{"name":"Department of Pulmonary Medicine, Yashoda Group of Hospitals, Hyderabad, Telangana, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Virender Pratibh","family":"Prasad","sequence":"additional","affiliation":[{"name":"Department of Pulmonary Medicine, Yashoda Group of Hospitals, Hyderabad, Telangana, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shweta","family":"Sethi","sequence":"additional","affiliation":[{"name":"Department of Pathology, Yashoda Group of Hospitals, Hyderabad, Telangana, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Venkata Nagarjuna","family":"Maturu","sequence":"additional","affiliation":[{"name":"Department of Pulmonary Medicine, Yashoda Group of Hospitals, Hyderabad, Telangana, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2024,3,8]]},"reference":[{"key":"2025082804032536000_17.3.e255075.1","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1097\/MCP.0000000000000180","article-title":"Update in primary pulmonary lymphomas","volume":"21","author":"Cardenas-Garcia","year":"2015","journal-title":"Curr Opin Pulm Med"},{"key":"2025082804032536000_17.3.e255075.2","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-4975(99)01535-0"},{"key":"2025082804032536000_17.3.e255075.3","doi-asserted-by":"crossref","first-page":"7660","DOI":"10.1002\/cam4.2683","article-title":"Clinical characteristics, diagnosis, treatment, and prognostic factors of pulmonary mucosa\u2010associated lymphoid tissue\u2010derived lymphoma","volume":"8","author":"Wang","year":"2019","journal-title":"Cancer Med"},{"key":"2025082804032536000_17.3.e255075.4","doi-asserted-by":"publisher","DOI":"10.1158\/1078-0432.CCR-04-2282"},{"key":"2025082804032536000_17.3.e255075.5","doi-asserted-by":"crossref","first-page":"246","DOI":"10.5578\/tt.3482","article-title":"Primary pulmonary non-hodgkin\u2019s lymphoma: ten cases with a review of the literature","volume":"60","author":"Kocat\u00fcrk","year":"2012","journal-title":"Tuberk Toraks"},{"key":"2025082804032536000_17.3.e255075.6","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.02.00404102"},{"key":"2025082804032536000_17.3.e255075.7","unstructured":"Isaacson PG , Norton AJ . 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