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| '''Rheumatoid lung nodule''' is an uncommon manifestation of [[rheumatoid arthritis]].
| | #redirect [[rheumatoid lung nodule]] |
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| ''Rheumatoid nodule of the lung'' and ''rheumatoid lung nodule'' redirect to this article.
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| ==General==
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| *Rare.<ref name=pmid22265461>{{Cite journal | last1 = Gómez Herrero | first1 = H. | last2 = Arraiza Sarasa | first2 = M. | last3 = Rubio Marco | first3 = I. | last4 = García de Eulate Martín-Moro | first4 = I. | title = Pulmonary rheumatoid nodules: presentation, methods, diagnosis and progression in reference to 5 cases. | journal = Reumatol Clin | volume = 8 | issue = 4 | pages = 212-5 | month = | year = | doi = 10.1016/j.reuma.2011.09.004 | PMID = 22265461 }}</ref>
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| Common associations:<ref name=pmid22265461/>
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| *Male.
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| *RF +ve.
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| *Skin nodules - see ''[[rheumatoid nodule]]''.
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| ==Gross/radiology==
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| Features:<ref name=pmid22265461/>
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| *Usually upper lung fields, peripheral and round.
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| *+/-Cavitation (~50% of cases).
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| ==Microscopic==
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| Features:<ref name=pmid23984160/>
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| *Mixed inflammatory infiltrate.
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| *+/-[[Giant cells]].
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| Dx:
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| *Necrotic pulmonary nodule in [[Crohn's disease]].
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| *[[Infectious pneumonia]].
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| ===Images===
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| www:
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| *[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3741933/figure/fig3/ RLN (nih.gov)].<ref name=pmid23984160/>
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| *[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3741933/figure/fig4/ RLN (nih.gov)].<ref name=pmid23984160>{{Cite journal | last1 = Chhakchhuak | first1 = CL. | last2 = Khosravi | first2 = M. | last3 = Lohr | first3 = KM. | title = Role of (18)F-FDG PET Scan in Rheumatoid Lung Nodule: Case Report and Review of the Literature. | journal = Case Rep Rheumatol | volume = 2013 | issue = | pages = 621340 | month = | year = 2013 | doi = 10.1155/2013/621340 | PMID = 23984160 }}</ref>
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| ==Stains==
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| *[[ZN stain]] -ve for [[AFB]].
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| *[[GMS stain]] -ve for [[fungal organisms]].
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| ==See also==
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| *[[Medical lung disease]].
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| *[[Rheumatoid nodule]].
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| *[[Rheumatoid arthritis]].
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| ==References==
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| {{Reflist|1}}
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| [[Category:Diagnosis]]
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