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Pulmonary Mycobacterium kansasii Infection Mimicking Malignancy on the 18F-FDG PET Scan in a Patient Receiving Etanercept: A Case Report and Literature Review
Joint Authors
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-10-20
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
A 66-year-old male presented with chest pain, malaise, generalized weakness, and weight loss.
He had been receiving etanercept injection for rheumatoid arthritis.
Chest X-ray revealed a right upper lobe mass.
Chest computed tomography (CT) showed a right apical mass, highly suggestive of a Pancoast tumor.
The thoracic fluorine-18 fluoro-deoxy-glucose (18F-FDG) positron emission tomography (PET) scan demonstrated significantly high metabolic pulmonary lesions with the standardized uptake value (SUV) of 12.5, consistent with lung cancer.
The patient underwent bronchoscopy and bronchoalveolar lavage (BAL).
BAL cytology was negative for malignant cells.
BAL acid fast bacilli (AFB) smears were positive, and Mycobacterium kansasii was eventually isolated.
He received a 12-month course of rifampin, isoniazid, and ethambutol.
Interval resolution of pulmonary lesions was noted on follow-up serial CT chest studies.
There has been increasing incidence of nontuberculous mycobacterial infections reported in patients treated with the antitumor necrosis factor-alpha (anti-TNF-alpha) agents.
Infectious foci have an increased glucose metabolism which potentially causes a high FDG uptake on the 18F-FDG PET scan, leading to undue anxiety and cost to the patients.
This is the first reported case of pulmonary M.
kansasii infection with a positive thoracic 18F-FDG PET study mimicking malignancy in a patient on etanercept.
American Psychological Association (APA)
Min, Zaw& Amlani, Mohan. 2014. Pulmonary Mycobacterium kansasii Infection Mimicking Malignancy on the 18F-FDG PET Scan in a Patient Receiving Etanercept: A Case Report and Literature Review. Case Reports in Pulmonology،Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-1034950
Modern Language Association (MLA)
Min, Zaw& Amlani, Mohan. Pulmonary Mycobacterium kansasii Infection Mimicking Malignancy on the 18F-FDG PET Scan in a Patient Receiving Etanercept: A Case Report and Literature Review. Case Reports in Pulmonology No. 2014 (2014), pp.1-5.
https://search.emarefa.net/detail/BIM-1034950
American Medical Association (AMA)
Min, Zaw& Amlani, Mohan. Pulmonary Mycobacterium kansasii Infection Mimicking Malignancy on the 18F-FDG PET Scan in a Patient Receiving Etanercept: A Case Report and Literature Review. Case Reports in Pulmonology. 2014. Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-1034950
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1034950