1
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Qi DD, Zhuang Y, Chen Y, Guo JJ, Zhang Z, Gu Y. Interstitial pneumonia combined with nocardia cyriacigeorgica infection: A case report. World J Clin Cases 2023; 11:7920-7925. [DOI: 10.12998/wjcc.v11.i32.7920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/25/2023] [Accepted: 11/02/2023] [Indexed: 11/16/2023] Open
Abstract
BACKGROUND Nocardia infection is a relatively uncommon disease, with no reports among patients with interstitial pneumonia. Due to its atypical clinical symptoms and chest computed tomography (CT) findings and the frequent yielding of negative results by conventional cultures, it poses challenges for timely diagnosis and treatment.
CASE SUMMARY A 63-year-old female patient presented to our hospital in July 2022 with a 3-mo history of intermittent cough and poor appetite, accompanied by a 2-wk long duration of headaches. She had a previous medical history of interstitial pneumonia and was on oral prednisone and cyclosporine. Chest CT revealed the presence of newly developed round nodules. The diagnosis of Nocardia cyriacigeorgica infection was confirmed through metagenomic next-generation sequencing (mNGS) performed on bronchoalveolar lavage fluid. Targeted anti-infection therapy was initiated, resulting in symptom improvement and radiological resolution, further validating the mNGS results.
CONCLUSION Nocardia cyriacigeorgica infection is a clinically rare condition that is primarily observed in immunocompromised patients. Its clinical and radiological manifestations lack specificity, but mNGS can aid in rapidly obtaining pathogenic information. Early initiation of targeted antimicrobial therapy based on mNGS results can improve patient prognosis.
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Affiliation(s)
- Dao-Da Qi
- Department of Geriatrics, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing 210003, Jiangsu Province, China
| | - Yi Zhuang
- Department of Respiratory and Critical Care Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210006, Jiangsu Province, China
| | - Yang Chen
- Department of Geriatrics, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing 210003, Jiangsu Province, China
| | - Jing-Jing Guo
- Department of Geriatrics, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing 210003, Jiangsu Province, China
| | - Ze Zhang
- Department of Geriatrics, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing 210003, Jiangsu Province, China
| | - Yan Gu
- Department of Geriatrics, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing 210003, Jiangsu Province, China
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2
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Ito Y, Miwa S, Shirai M. Pulmonary nocardiosis following nodular bronchiectatic Mycobacterium avium complex pulmonary disease in an immunocompetent patient. BMJ Case Rep 2023; 16:e256007. [PMID: 37973540 PMCID: PMC10660431 DOI: 10.1136/bcr-2023-256007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023] Open
Abstract
A woman in her 70s with a history of nodular bronchiectatic Mycobacterium avium complex pulmonary disease (MAC-PD) presented with an exacerbated productive cough and worsening findings on chest imaging. Although repeated sputum culture tests were negative for acid-fast bacilli and only revealed normal respiratory flora, a bronchoscopy identified Nocardia sp. Consequently, she was diagnosed with pulmonary nocardiosis and was successfully treated with levofloxacin. It is known that pulmonary nocardiosis can manifest in immunocompetent individuals with bronchiectasis. For cases of refractory nodular bronchiectatic MAC-PD, it is vital to consider bronchoscopy to identify potential co-infections, such as Nocardia.
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Affiliation(s)
- Yasuhiro Ito
- Department of Respiratory Medicine, NHO Tenryu Hospital, Hamamatsu, Japan
| | - Seiich Miwa
- Department of Respiratory Medicine, NHO Tenryu Hospital, Hamamatsu, Japan
| | - Masahiro Shirai
- Department of Respiratory Medicine, NHO Tenryu Hospital, Hamamatsu, Japan
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3
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Dong J, Guan W, Hu A, Luo Q. Mild Pulmonary Nocardiosis Caused by Nocardia terpenica in an Immunocompetent Patient. Intern Med 2023; 62:2911-2917. [PMID: 36792184 PMCID: PMC10602832 DOI: 10.2169/internalmedicine.9740-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 01/04/2023] [Indexed: 02/16/2023] Open
Abstract
A 53-year-old immunocompetent man was admitted to our hospital because of paroxysmal cough with a low fever for more than 5 months. On admission, chest computed tomography showed multiple plaques and nodules, some with small central cavities, in both lungs and cystic and columnar bronchiectasis of the right middle bronchus. Treatment with various antibiotics was ineffective. Metagenomic next-generation sequencing of the bronchoalveolar lavage fluid showed Nocardia terpenica, and this organism was cultured from bronchoalveolar lavage fluid, resulting in a diagnosis of pulmonary nocardiosis. After administration of trimethoprim-sulfamethoxazole for 5 weeks, chest computed tomography showed a significant reduction in the lung lesions that had been detected on admission. Immunosuppressed patients are particularly prone to nocardiosis infection, which is usually severe. N. terpenica has rarely been detected in clinical samples, and its characteristics require further study with the accumulation of more clinical cases.
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Affiliation(s)
- Jingjun Dong
- Department of Respiratory and Critical Medicine, Baoan Central Hospital of Shenzhen, China
| | - Wei Guan
- Department of Respiratory and Critical Medicine, Baoan Central Hospital of Shenzhen, China
| | - Anmei Hu
- Department of Respiratory and Critical Medicine, Baoan Central Hospital of Shenzhen, China
| | - Qiong Luo
- Department of Respiratory and Critical Medicine, Baoan Central Hospital of Shenzhen, China
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4
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Li T, Chen YX, Lin JJ, Lin WX, Zhang WZ, Dong HM, Cai SX, Meng Y. Successful treatment of disseminated nocardiosis diagnosed by metagenomic next-generation sequencing: A case report and review of literature. World J Clin Cases 2022; 10:10120-10129. [PMID: 36246801 PMCID: PMC9561593 DOI: 10.12998/wjcc.v10.i28.10120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/25/2022] [Accepted: 08/21/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Nocardia paucivorans is an infrequently found bacterium with the potential to cause severe infection, with a predilection for the central nervous system, both in immunocompromised and immunocompetent individuals. Rapid etiological diagnosis of nocardiosis can facilitate timely and rational antimicrobial treatment. Metagenomic next-generation sequencing (mNGS) can improve the rate and reduce the turnaround time for the detection of Nocardia.
CASE SUMMARY A 49-year-old man was admitted to hospital with cough and hemoptysis. Imaging revealed pulmonary consolidation as well as multiple brain lesions. Nocardia asiatica and Nocardia beijingensis were rapidly detected by mNGS of bronchoalveolar lavage fluid (BALF) while bacterial culture of BALF and pathological biopsy of lung tissue were negative. In early stages, he was treated with trimethoprim-sulfamethoxazole (TMP-SMZ) and linezolid by individual dose adjustment based on serum concentrations and the adverse effects of thrombocytopenia and leukopenia. The treatment was then replaced by TMP-SMZ and ceftriaxone or minocycline. He was treated with 8 mo of parenteral and/or oral antibiotics, and obvious clinical improvement was achieved with resolution of pulmonary and brain lesions on repeat imaging.
CONCLUSION mNGS provided fast and precise pathogen detection of Nocardia. In disseminated nocardiosis, linezolid is an important alternative that can give a better outcome with the monitoring of linezolid serum concentrations and platelet count.
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Affiliation(s)
- Ting Li
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Yi-Xin Chen
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Jia-Jia Lin
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Wei-Xian Lin
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Wei-Zhen Zhang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Hang-Ming Dong
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Shao-Xi Cai
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Ying Meng
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
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5
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Tokita N, Urabe N, Sakamoto S, Yamaguchi A, Sekiguchi R, Kishi K. Co‐infection with
Nocardia
spp. in a patient wit
h Mycobacterium avium
complex pulmonary disease: A case report. Respirol Case Rep 2022; 10:e01036. [PMID: 36090022 PMCID: PMC9452899 DOI: 10.1002/rcr2.1036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/29/2022] [Indexed: 11/30/2022] Open
Abstract
Mycobacterium avium complex pulmonary disease (MAC‐PD) is sometimes accompanied by co‐infection with other pathogenic microorganisms such as Pseudomonas aeruginosa and Haemophilus influenzae. However, co‐infection with Nocardia spp. has been rarely reported. We report on a patient diagnosed as having co‐infection with Nocardia after treatment for MAC‐PD, which was successfully treated using trimethoprim‐sulfamethoxazole (TMP‐SMX). A 74‐year‐old woman with MAC‐PD was admitted to our hospital to undergo re‐examination for pathogenic microorganisms because chest computed tomography (CT) findings did not improve after treatment for MAC‐PD. She underwent bronchoscopy and Nocardia spp. was detected from bronchoalveolar lavage fluid culture. Chest CT findings improved after 6 months of treatment using TMP‐SMX. Co‐infection with other pathogenic microorganisms should be considered when chest CT findings worsen after adequate treatment of MAC‐PD. Chest CT findings of Nocardia pulmonary disease in immunocompetent patients can mimic those of MAC‐PD and should therefore be differentiated one from the other.
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Affiliation(s)
- Nozomi Tokita
- Department of Respiratory Medicine Toho University Omori Medical Center Tokyo Japan
| | - Naohisa Urabe
- Department of Respiratory Medicine Toho University Omori Medical Center Tokyo Japan
| | - Susumu Sakamoto
- Department of Respiratory Medicine Toho University Omori Medical Center Tokyo Japan
| | - Asuka Yamaguchi
- Department of Respiratory Medicine Toho University Omori Medical Center Tokyo Japan
| | - Ryo Sekiguchi
- Department of Respiratory Medicine Toho University Omori Medical Center Tokyo Japan
| | - Kazuma Kishi
- Department of Respiratory Medicine Toho University Omori Medical Center Tokyo Japan
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6
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Sun X, Liu W, Liu L, Sun H. Coinfection of pulmonary nocardiosis and nontuberculous mycobacterial pulmonary disease in patients without known immunodeficiency. Pulmonology 2022. [DOI: 10.1016/j.pulmoe.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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7
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Jiao M, Ma X, Li Y, Wang H, Liu Y, Guo W, Lv J. Metagenomic next-generation sequencing provides prognostic warning by identifying mixed infections in nocardiosis. Front Cell Infect Microbiol 2022; 12:894678. [PMID: 36118026 PMCID: PMC9471186 DOI: 10.3389/fcimb.2022.894678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 08/16/2022] [Indexed: 11/23/2022] Open
Abstract
Nocardia is an opportunistic pathogen that mainly involves immunosuppressed patients and causes a high mortality rate. As an emerging approach to detect infectious pathogens, metagenomic next-generation sequencing (mNGS) was reported in the detection of Nocardia. However, there is no evidence demonstrating the effect of mNGS on the prognosis of Nocardia infection. In this retrospective study, we included 18 nocardiosis patients. Nocardia species were detected by mNGS from their clinical samples. All the patients were diagnosed with nocardiosis by clinical experts through a comprehensive evaluation. Of these 18 patients, fever is the most frequent initial symptom. Compared to traditional culture methods, mNGS provides a faster turnaround time (TAT) and higher sensitivity. Pulmonary nocardiosis was the most common clinical presentation in the study. mNGS detected 13 types of Nocardia species, of which Nocardia abscessus and Nocardia cyriacigeorgica were the most common species. The study’s most noteworthy discovery is that mNGS outperforms culture at detecting mixed infections (more than one pathogen detected in one clinical specimen, including bacteria, fungi, and excluding virus), and number of infectious species was an independent risk factor for nocardiosis patients’ prognostics after adjusting age, ICU days, gender and underlying diseases (adjusted HR = 1.47, 95% CI: 1.09-1.98, p = 0.011). As a result, we believe that by detecting mixed infections (more than one pathogenic species), mNGS can provide a clinical risk warning for the prognosis of nocardiosis.
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Affiliation(s)
- Mengfan Jiao
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Gene Hospital of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaoxu Ma
- Department of Respiration, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yaoguang Li
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Gene Hospital of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Huifen Wang
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Gene Hospital of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ying Liu
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Gene Hospital of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenhu Guo
- R&D Center, Agene (Fuzhou) Medical Laboratory Co. Ltd., Fuzhou, China
| | - Jun Lv
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Jun Lv,
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8
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Kobashi Y, Yoshioka D, Kato S, Oga T. Pneumococcal Pneumonia Co-infection with Mycobacterium avium and Nocardia cyriacigeorgica in an Immunocompetent Patient. Intern Med 2022; 61:1285-1290. [PMID: 34670879 PMCID: PMC9107980 DOI: 10.2169/internalmedicine.6895-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A 61-year-old woman was transferred with a complaint of a fever and productive cough. She had tested positive for Mycobacterium avium and Nocardia cyriacigeorgica at least twice, and Streptococcus pneumonia (PISP) was isolated (3+) from her purulent sputum. As radiological findings, a lower lung field-dominant infiltration shadow and nodular shadow with cavity were recognized in the bilateral lung fields. We diagnosed her with pneumococcal pneumonia co-infection with M. avium and N. cyriacigeorgica. She was treated with MEPM for pneumococcal pneumonia, a standard regimen containing clarithromycin for pulmonary M. avium complex (MAC) disease, and sulfamethoxazole/trimethoprim for pulmonary nocardiosis. She improved with appropriate treatment.
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Affiliation(s)
| | - Daisuke Yoshioka
- Department of Respiratory Medicine, Kawasaki Medical School, Japan
| | - Shigeki Kato
- Department of Respiratory Medicine, Kawasaki Medical School, Japan
| | - Toru Oga
- Department of Respiratory Medicine, Kawasaki Medical School, Japan
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9
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Lin J, Wu XM, Peng MF. Nocardia cyriacigeorgica infection in a patient with pulmonary sequestration: A case report. World J Clin Cases 2021; 9:2367-2372. [PMID: 33869615 PMCID: PMC8026832 DOI: 10.12998/wjcc.v9.i10.2367] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/23/2020] [Accepted: 01/26/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Nocardia cyriacigeorgica (N. cyriacigeorgica) infection is uncommon in clinical practice. Pulmonary sequestration complicated with N. cyriacigeorgica has not been reported in the literature. Here, we present a case of pulmonary se-questration complicated with N. cyriacigeorgica infection in an immunocom-petent woman.
CASE SUMMARY A 37-year-old woman complaining of a recurrent cough was admitted to our hospital. Pulmonary sequestration in the lower lobe of the left lung was diagnosed by enhanced computed tomography. Bronchoalveolar lavage fluid was then collected, which showed gram positive bacilli with weakly positive modified acid-fast staining. The pathogen was identified as N. cyriacigeorgica after bacterial culture and mass spectrometry analysis. The patient was diagnosed with pulmonary sequestration complicated with N. cyriacigeorgica infection, and her symptoms quickly improved following anti-infective therapy.
CONCLUSION Nocardiosis is considered to be an opportunistic infection. This is the first report of pulmonary sequestration complicated with N. cyriacigeorgica infection in a patient with normal immunity.
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Affiliation(s)
- Jian Lin
- Department of Respiratory and Critical Care Medicine, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai 317000, Zhejiang Province, China
| | - Xiao-Mai Wu
- Department of Respiratory and Critical Care Medicine, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai 317000, Zhejiang Province, China
| | - Min-Fei Peng
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai 317000, Zhejiang Province, China
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10
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Pulmonary nocardiosis: A Single Center Study. Respir Med Case Rep 2020; 31:101175. [PMID: 32775192 PMCID: PMC7396906 DOI: 10.1016/j.rmcr.2020.101175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 07/13/2020] [Accepted: 07/20/2020] [Indexed: 12/02/2022] Open
Abstract
Objectives Nocardiosis is a rare infection caused by Nocardia spp., a gram-positive bacteria non-commensal of the human flora. Nocardiosis usually presents with lung infection but may disseminate to other organs, most frequently the brain. The major risk factor is immunosuppression, but lung diseases also increase the risk of infection. Treatment with antibiotics is usually prolonged. In this study, we made a retrospective analysis of pulmonary nocardiosis cases and a review of the available literature. Methods We made a retrospective analysis of all pulmonary nocardiosis cases from 13 years (January 2005 to December 2017) in our institution, selecting patients from pulmonology and infectious diseases consultation. Results We found four patients diagnosed with pulmonary nocardiosis, three males (patients 1, 2 and 3) and one female (patient 4). Median age was 71 ± 15 years old. Different specimens were identified (N. cyriacigeorgica, Nocardia spp., N. nova, and N. wallacei/transvalensis). Bronchofibroscopy with bronchoalveolar lavage culture was the most frequent diagnostic procedure (patients 1 and 4). Only patient 2 presented an unfavorable response to treatment and died from septic shock. Conclusions Pulmonary nocardiosis has a good prognosis if diagnosed early and treated adequately. It should always be considered in the differential diagnosis of pulmonary infections concomitant with brain or other soft tissue lesion, especially in immunocompromised patients.
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11
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Pulmonary Infections Caused by Emerging Pathogenic Species of Nocardia. Case Rep Infect Dis 2019; 2019:5184386. [PMID: 31662925 PMCID: PMC6791275 DOI: 10.1155/2019/5184386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 09/03/2019] [Indexed: 11/18/2022] Open
Abstract
Pulmonary infections are the most common clinical manifestations of Nocardia species. There is an increase in cases of nocardial infections occurring worldwide attributable to the increase in the immunosuppressed population. The availability of molecular methods has aided the detection of more number of cases as well as unusual species. Still, it remains one of the most underdiagnosed pathogens. Recognition of drug resistance in this organism has now mandated early and precise identification with speciation for effective treatment and management. Nocardial species identity can predict antimicrobial susceptibility and guide clinical management. Here, we report two cases of pulmonary nocardiosis caused by unusual species of Nocardia, namely, N. cyriacigeorgica and N. beijingensis identified by 16S rRNA gene-based sequencing. These cases are being reported for their rarity.
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12
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Kobayashi K, Asakura T, Ishii M, Ueda S, Irie H, Ozawa H, Saitoh K, Kurihara I, Itoh H, Betsuyaku T. Pulmonary nocardiosis mimicking small cell lung cancer in ectopic ACTH syndrome associated with transformation of olfactory neuroblastoma: a case report. BMC Pulm Med 2018; 18:142. [PMID: 30134888 PMCID: PMC6106901 DOI: 10.1186/s12890-018-0710-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 08/16/2018] [Indexed: 11/10/2022] Open
Abstract
Background Pulmonary nocardiosis frequently develops as an opportunistic infection in cell-mediated immunosuppressive patients, and sometimes requires differentiation from pulmonary malignancy. Ectopic adrenocorticotropic hormone (ACTH) syndrome (EAS) is a neoplastic disorder which leads to impaired cell-mediated immunity, and is commonly associated with small cell lung cancer (SCLC). Because pulmonary infection and causative malignancy can appear as pulmonary lesions with EAS, differentiation of these diseases remains a critical issue for physicians. Case presentation A 52-year-old woman with progressive lower limb paralysis and general fatigue was referred to us. She had been diagnosed with olfactory neuroblastoma (ONB) and treated with surgery and radiation therapy 10 years before the referral and had required stereotactic radiosurgery and chemotherapy 4 years later for a relapse of the ONB. On referral, she presented with Cushing’s syndrome with elevated cortisol and ACTH levels. Potassium supplement improved her symptoms; however, a month later, she was urgently hospitalized due to acute pleuritic chest pain on inspiration. Chest computed tomography revealed left lower lobular consolidations and a contralateral nodule in the right middle lobe. The clinical history and laboratory work-up suggested that her Cushing’s syndrome had most likely arisen from EAS. Additionally, the lungs were suspected as the ACTH source due to high levels of progastrin-releasing peptide and progressive pulmonary consolidation with a contralateral nodule, suggesting SCLC. However, histological examination from bronchoscopy revealed no evidence of malignancy, and Nocardia cyriacigeorgica was isolated from bronchoalveolar lavage fluid. Sulfamethoxazole/trimethoprim improved her pulmonary lesions. Somatostatin receptor scintigraphy revealed strong tracer uptake in the ONB lesions, indicating that the origin of the EAS was the olfactory tumor. However, histological examination of ONB specimens resected 10 years earlier showed no intracytoplasmic immunopositivity for ACTH. Conclusions We highlight a rare case of pulmonary nocardiosis, which was associated with EAS mimicking SCLC, and was related to ONB transformation. Nocardiosis has to be considered even though anamnestic, clinical, and radiological aspects suggest the presence of metastasis. Additionally, physicians should carefully monitor patients with ONB for the development of Cushing’s symptoms because the tumor can transform into an ACTH-producing form, even after long-term follow-up.
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Affiliation(s)
- Keigo Kobayashi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan.
| | - Soichiro Ueda
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Hidehiro Irie
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Hiroyuki Ozawa
- Department of Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Kohei Saitoh
- Division of Endocrinology, Metabolism and Nephrology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Isao Kurihara
- Division of Endocrinology, Metabolism and Nephrology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Hiroshi Itoh
- Division of Endocrinology, Metabolism and Nephrology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
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13
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Ho K, Kennis B, Sandey M, White A. Successful medical management of cutaneous
Nocardia
species infection in a dog receiving ciclosporin (Atopica). VETERINARY RECORD CASE REPORTS 2017. [DOI: 10.1136/vetreccr-2017-000493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Karen Ho
- Department of Clinical SciencesAuburn College of Veterinary MedicineAuburnAlabamaUSA
| | - Bob Kennis
- Department of Clinical SciencesAuburn College of Veterinary MedicineAuburnAlabamaUSA
| | - Maninder Sandey
- Department of PathobiologyAuburn College of Veterinary MedicineAuburnAlabamaUSA
| | - Amelia White
- Department of Clinical SciencesAuburn College of Veterinary MedicineAuburnAlabamaUSA
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14
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Fujita T, Ikari J, Watanabe A, Tatsumi K. Clinical characteristics of pulmonary nocardiosis in immunocompetent patients. J Infect Chemother 2016; 22:738-743. [DOI: 10.1016/j.jiac.2016.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/16/2016] [Accepted: 08/11/2016] [Indexed: 10/21/2022]
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15
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Castellana G, Grimaldi A, Castellana M, Farina C, Castellana G. Pulmonary nocardiosis in Chronic Obstructive Pulmonary Disease: A new clinical challenge. Respir Med Case Rep 2016; 18:14-21. [PMID: 27144111 PMCID: PMC4840429 DOI: 10.1016/j.rmcr.2016.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 03/09/2016] [Accepted: 03/10/2016] [Indexed: 01/28/2023] Open
Abstract
Pulmonary nocardiosis (PN) is a rare but severe disease caused by Nocardia spp. Despite the traditional description as opportunistic infection, case reports and case series of pulmonary nocardiosis have recently been reported in immunocompetent patients too, in particular among people with chronic pulmonary diseases such as advanced Chronic Obstructive Pulmonary Disease (COPD). PN is characterized by non-specific symptoms and radiological findings; bacteriological culture can be difficult. For the reasons above, diagnosis of PN is challenging, sometimes resulting in a misdiagnosis of tuberculosis. We report an interesting case of PN in a 75-year-old male with COPD. He complained a 3-months history of fatigue, evening rise in body temperature, night sweats, unexplained weight loss of 5 kg, worsening dyspnea, cough and mucopurulent sputum. The chest X-ray showed multiple nodules with cavitations bilaterally in the apical and subclavian regions. Nocardia cyriacigeorgica with 100% identity was identified in three sputum samples. Since the patient has never undergone a systemic and/or inhaled steroid therapy, and has no respiratory failure and comorbidities entailing immunodepression, it is conceivable that, in this immunocompetent patient, the COPD could represent an isolated risk factor for PN. Risk factors, clinical presentations, radiographic findings, differential diagnosis and review of the literature of PN cases in COPD, pointing out the similarities and differences, are also described.
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Affiliation(s)
- Giorgio Castellana
- Institute of Respiratory Disease, Aldo Moro University of Bari, Piazza Giulio Cesare 11, Bari, Italy
| | - Anna Grimaldi
- Clinical Laboratory Medicine, P.O. “Di Venere-Triggiano”, ASL Bari, Viale A. Moro, Triggiano, Bari, Italy
| | - Marco Castellana
- Aldo Moro University of Bari, Piazza Giulio Cesare 11, Bari, Italy
| | - Claudio Farina
- Microbiology Institute, AO “Papa Giovanni XXIII”, Piazza OMS 1, Bergamo, Italy
| | - Giuseppe Castellana
- District Health Center, ASL Bari, Via Edmondo De Amicis 36, Conversano, Bari, Italy
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Pulmonary Nocardiosis in the Immunocompetent Host: Case Series. Case Rep Pulmonol 2015; 2015:314831. [PMID: 26491594 PMCID: PMC4605260 DOI: 10.1155/2015/314831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/16/2015] [Accepted: 09/17/2015] [Indexed: 02/03/2023] Open
Abstract
Pulmonary nocardiosis is commonly recognized as an opportunistic infection in patients with predisposing immunosuppressive conditions. However, reports of pulmonary nocardiosis in the immunocompetent host are rare. Here, we report a case series of four patients with pulmonary nocardiosis without a predisposing condition.
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17
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Abstract
Human nocardiosis may present as an acute or a chronic infection. Although a saprophyte Nocardia spp are responsible for superficial skin infections, pulmonary infections, and disseminated nocardiosis usually involving patients who are immunosuppressed and debilitated. Infections in immunocompetent individuals are usually chronic and present non-specific symptoms. Invasive and disseminated nocardiosis is common among patients with weakened cellular immune systems. Clinical diagnosis of pulmonary nocardiosis is difficult owing to the similarity of its presentation with other respiratory pathogens that include Actinomycetes members and Mycobacteriumtuberculosis. Laboratory diagnosis of human nocardiosis is plagued by the fact that a culture of Nocardia spp requires prolonged incubation periods for isolation which most laboratories fail to follow. The lack of clinical, laboratory, and epidemiological data on the incidence of nocardiosis in humans undermines its significance as a potential pathogen. This review attempts to reexamine the pathogenic potential of Nocardia in human infections
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