Chlamydia psittaci pneumonia - evolutionary aspects on chest CT
Abstract Purpose To present the different findings of Chlamydia psittaci (C. psittaci) pneumonia on computed tomography (CT) according to the progression of the disease, to improve diagnostic accuracy, guide early clinical diagnosis, evaluate treatment efficacy, and reduce the mortality associated w...
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BMC
2025-01-01
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| Series: | BMC Infectious Diseases |
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| Online Access: | https://doi.org/10.1186/s12879-024-10374-4 |
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| author | Na Yang Zhengqiu Ou Qian Sun Junping Pan Jing Wu Chen Xue |
| author_facet | Na Yang Zhengqiu Ou Qian Sun Junping Pan Jing Wu Chen Xue |
| author_sort | Na Yang |
| collection | DOAJ |
| description | Abstract Purpose To present the different findings of Chlamydia psittaci (C. psittaci) pneumonia on computed tomography (CT) according to the progression of the disease, to improve diagnostic accuracy, guide early clinical diagnosis, evaluate treatment efficacy, and reduce the mortality associated with the disease. Methods In total, 80 cases of C. psittaci pneumonia diagnosed through next-generation sequencing from January 2019 to December 2023 in multiple hospitals in China were collected according to the inclusion criteria and analyzed. The study discussed important CT findings and their dynamic changes. Results The most common manifestations of C. psittaci pneumonia are lobar pneumonia and spherical pneumonia types with interstitial changes. The most common signs are the intralobular lines, air bronchogram sign, and reverse halo sign. In addition, necrosis, cavitation, and the tree-in-bud sign are rare but often associated with pleural effusion and splenomegaly. In the ultra-early stage, vascular inflammation changes were observed on imaging, often manifesting as ground-glass opacities around small core vessels or thickening of pulmonary hilar vessels. In the early stage, secondary lobules showed high-density shadows, which rapidly fused into large areas in the progressive stage, easily forming lobar pneumonia. The repair and absorption period tended to show the formation of the reverse halo sign centrally, and the dissipation period might have led to the formation of fibrous bands. Conclusion Combining clinical manifestations, laboratory tests, contact history, and imaging findings contribute to the diagnosis of C. psittaci pneumonia. |
| format | Article |
| id | doaj-art-93ff095e0ade4ecbadb609d947635ea8 |
| institution | Kabale University |
| issn | 1471-2334 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
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| series | BMC Infectious Diseases |
| spelling | doaj-art-93ff095e0ade4ecbadb609d947635ea82025-01-05T12:09:46ZengBMCBMC Infectious Diseases1471-23342025-01-012511810.1186/s12879-024-10374-4Chlamydia psittaci pneumonia - evolutionary aspects on chest CTNa Yang0Zhengqiu Ou1Qian Sun2Junping Pan3Jing Wu4Chen Xue5Department of Radiology, Chengdu Fifth People’s HospitalDepartment of Radiology, People’s Hospital of NingxiangDepartment of Medical Image Center, Qihe County People’s HospitalDepartment of Imaging, Centre for Tuberculosis Control of Guangdong ProvinceDepartment of Radiology, Nanjing First Hospital, Nanjing Medical UniversityDepartment of Radiology, The Affiliated Brain Hospital of Nanjing Medical UniversityAbstract Purpose To present the different findings of Chlamydia psittaci (C. psittaci) pneumonia on computed tomography (CT) according to the progression of the disease, to improve diagnostic accuracy, guide early clinical diagnosis, evaluate treatment efficacy, and reduce the mortality associated with the disease. Methods In total, 80 cases of C. psittaci pneumonia diagnosed through next-generation sequencing from January 2019 to December 2023 in multiple hospitals in China were collected according to the inclusion criteria and analyzed. The study discussed important CT findings and their dynamic changes. Results The most common manifestations of C. psittaci pneumonia are lobar pneumonia and spherical pneumonia types with interstitial changes. The most common signs are the intralobular lines, air bronchogram sign, and reverse halo sign. In addition, necrosis, cavitation, and the tree-in-bud sign are rare but often associated with pleural effusion and splenomegaly. In the ultra-early stage, vascular inflammation changes were observed on imaging, often manifesting as ground-glass opacities around small core vessels or thickening of pulmonary hilar vessels. In the early stage, secondary lobules showed high-density shadows, which rapidly fused into large areas in the progressive stage, easily forming lobar pneumonia. The repair and absorption period tended to show the formation of the reverse halo sign centrally, and the dissipation period might have led to the formation of fibrous bands. Conclusion Combining clinical manifestations, laboratory tests, contact history, and imaging findings contribute to the diagnosis of C. psittaci pneumonia.https://doi.org/10.1186/s12879-024-10374-4Chlamydia psittaciPsittacosisAtypical pneumoniaComputed tomography |
| spellingShingle | Na Yang Zhengqiu Ou Qian Sun Junping Pan Jing Wu Chen Xue Chlamydia psittaci pneumonia - evolutionary aspects on chest CT BMC Infectious Diseases Chlamydia psittaci Psittacosis Atypical pneumonia Computed tomography |
| title | Chlamydia psittaci pneumonia - evolutionary aspects on chest CT |
| title_full | Chlamydia psittaci pneumonia - evolutionary aspects on chest CT |
| title_fullStr | Chlamydia psittaci pneumonia - evolutionary aspects on chest CT |
| title_full_unstemmed | Chlamydia psittaci pneumonia - evolutionary aspects on chest CT |
| title_short | Chlamydia psittaci pneumonia - evolutionary aspects on chest CT |
| title_sort | chlamydia psittaci pneumonia evolutionary aspects on chest ct |
| topic | Chlamydia psittaci Psittacosis Atypical pneumonia Computed tomography |
| url | https://doi.org/10.1186/s12879-024-10374-4 |
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