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deflazacort 3<span class="elsevierStyleHsp" style=""></span>mg&#47;day and chloroquine 250<span class="elsevierStyleHsp" style=""></span>mg&#47;day&#46; He presented in our hospital complaining of dyspnea&#44; cough&#44; asthenia and weight loss with three weeks evolution&#46; His physical exam was unremarkable&#44; except for malar and cervical cutaneous rash related to his discoid lupus&#46; Chest X-ray and computed tomography showed pulmonary infiltrations in the right upper lobe and a mediastinic mass of 9<span class="elsevierStyleHsp" style=""></span>cm &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46; Abdominal CT did not show any abnormalities&#46; Sputum analysis confirmed a diagnosis of pulmonary tuberculosis and the patient started anti-tuberculosis treatment&#46; His HIV and hepatitis virus status were negative&#46; Bronchoalveolar samples were negative for malignancy and CT-guided transthoracic core biopsy of the mediastinal mass only showed necrotic tissue&#44; so the patient underwent a surgical lung biopsy&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">Despite treatment&#44; clinical evolution was not favorable&#44; with persistent fever&#44; one episode of auricular flutter and hemodynamic instability&#46; Antibacillary susceptibility testing revealed resistance to all first class drugs&#46; At the 45th day of admission&#44; patient developed an acute pulmonary edema with no response to medical treatment and he eventually died&#46; Description of the surgical biopsy was only available post-mortem and suggested the diagnosis of a pheochromocytoma&#47;paraganglioma &#8211; <a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">This clinical case illustrates a patient with concomitant diagnosis of pulmonary tuberculosis and a thoracic paraganglioma&#46; Because the results of surgical biopsy were only known post-mortem&#44; additional research on the evaluation of the diagnosis of paraganglioma&#44; including determination of catecholamine and metanephrine levels&#44; presence of distant metastasis and genetic testing were not possible&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Because this is a rare tumor&#44; most of the literature describes only single case reports&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;3</span></a> In 2008&#44; Mayo Clinic reported their experience with fourteen cases of treated mediastinal paragangliomas&#46;<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> Concomitant occurrence of tuberculosis and thoracic paraganglioma is even rarer&#44; with very few previous reports<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a>&#44; making the diagnosis and treatment of these cases difficult and challenging&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">In conclusion&#44; paragangliomas are not usually suspected in the initial evaluation of a mediastinal mass because of its rarity&#44; but it should be part of the differential diagnosis&#46; The concomitant occurrence of tuberculosis may pose a diagnostic challenge in this case&#44; leading to a delay in the diagnosis of this type of tumors&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Ethical considerations</span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Protection of people and animals</span><p id="par0035" class="elsevierStylePara elsevierViewall">The authors declare that no experiments were performed on humans or animals for this study&#46;</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Confidentiality of data</span><p id="par0040" class="elsevierStylePara elsevierViewall">The authors declare that they have followed the protocols of their work center on the publication of patient data&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Right to privacy and informed consent</span><p id="par0045" class="elsevierStylePara elsevierViewall">The authors declare that no patient data appear in this publication&#46;</p></span></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conflict of interest</span><p id="par0050" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest to the contents of the manuscript&#46;</p></span></span>"
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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Surgical lung biopsy&#46; A solid and poorly differentiated malignant neoplasm with extensive areas of necrosis &#40;A &#8211; HE 200&#215;&#41;&#46; The tumor cells had abundant eosinophilic cytoplasm and round nuclei with evident nucleoli &#40;B &#8211; HE 600&#215;&#41;&#46; Immunohistochemically&#44; the neoplastic cells focally expressed vimentin &#40;C &#8211; 600&#215;&#41; and synaptophysin &#40;D &#8211; 600&#215;&#41; in the absence of epithelial and other markers &#40;AE1&#47;AE3&#44; CK8&#47;18&#44; CK7&#44; CK20&#44; CK5&#44; 34&#946;12&#44; EMA&#44;TTF1&#44; napsin-A&#44; p63&#44; calretinin&#44; pS100&#44; CD31&#44; CD34&#44; PLAP&#44; beta-HCG&#44; CD45&#44; CD20&#44; CD10&#44; inhibin&#44; C-kit&#44; CD99&#44; actin&#44; desmin&#44; GFAP&#44; CD30&#44; CD21&#44; HMB45&#44; CD56&#44; CD23&#44; alpha-fetoprotein&#44; myeloperoxidase&#44; lysozyme&#44; WT1&#44; ALK&#44; HepPar-1&#41;&#46; With those morphological and immunohistochemical characteristics in the appropriate clinical context&#44; the diagnostic hypothesis of paraganglioma&#47;pheochromocytoma was suggested&#46;</p>"
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Letter to the Editor
Thoracic paraganglioma diagnosed in a patient with pulmonary tuberculosis – Case report
Paraganglioma torácico diagnosticado num paciente com tuberculose pulmonar – descrição de caso clínico
J.F. Cruza,
Corresponding author
joaoffcruz@gmail.com

Corresponding author.
, L. Iglésiasa, M. Monteirob, M.J. Santosc, T. Pimentelb, R.P. Silvad
a Serviço de Pneumologia, Hospital de Braga, Portugal
b Serviço de Medicina Interna, Hospital de Braga, Portugal
c Serviço de Endocrinologia, Hospital de Braga, Portugal
d Serviço de Anatomia Patológica, Hospital de São João, Porto, Portugal
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deflazacort 3<span class="elsevierStyleHsp" style=""></span>mg&#47;day and chloroquine 250<span class="elsevierStyleHsp" style=""></span>mg&#47;day&#46; He presented in our hospital complaining of dyspnea&#44; cough&#44; asthenia and weight loss with three weeks evolution&#46; His physical exam was unremarkable&#44; except for malar and cervical cutaneous rash related to his discoid lupus&#46; Chest X-ray and computed tomography showed pulmonary infiltrations in the right upper lobe and a mediastinic mass of 9<span class="elsevierStyleHsp" style=""></span>cm &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46; Abdominal CT did not show any abnormalities&#46; Sputum analysis confirmed a diagnosis of pulmonary tuberculosis and the patient started anti-tuberculosis treatment&#46; His HIV and hepatitis virus status were negative&#46; Bronchoalveolar samples were negative for malignancy and CT-guided transthoracic core biopsy of the mediastinal mass only showed necrotic tissue&#44; so the patient underwent a surgical lung biopsy&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">Despite treatment&#44; clinical evolution was not favorable&#44; with persistent fever&#44; one episode of auricular flutter and hemodynamic instability&#46; Antibacillary susceptibility testing revealed resistance to all first class drugs&#46; At the 45th day of admission&#44; patient developed an acute pulmonary edema with no response to medical treatment and he eventually died&#46; Description of the surgical biopsy was only available post-mortem and suggested the diagnosis of a pheochromocytoma&#47;paraganglioma &#8211; <a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">This clinical case illustrates a patient with concomitant diagnosis of pulmonary tuberculosis and a thoracic paraganglioma&#46; Because the results of surgical biopsy were only known post-mortem&#44; additional research on the evaluation of the diagnosis of paraganglioma&#44; including determination of catecholamine and metanephrine levels&#44; presence of distant metastasis and genetic testing were not possible&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Because this is a rare tumor&#44; most of the literature describes only single case reports&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;3</span></a> In 2008&#44; Mayo Clinic reported their experience with fourteen cases of treated mediastinal paragangliomas&#46;<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> Concomitant occurrence of tuberculosis and thoracic paraganglioma is even rarer&#44; with very few previous reports<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a>&#44; making the diagnosis and treatment of these cases difficult and challenging&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">In conclusion&#44; paragangliomas are not usually suspected in the initial evaluation of a mediastinal mass because of its rarity&#44; but it should be part of the differential diagnosis&#46; The concomitant occurrence of tuberculosis may pose a diagnostic challenge in this case&#44; leading to a delay in the diagnosis of this type of tumors&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Ethical considerations</span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Protection of people and animals</span><p id="par0035" class="elsevierStylePara elsevierViewall">The authors declare that no experiments were performed on humans or animals for this study&#46;</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Confidentiality of data</span><p id="par0040" class="elsevierStylePara elsevierViewall">The authors declare that they have followed the protocols of their work center on the publication of patient data&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Right to privacy and informed consent</span><p id="par0045" class="elsevierStylePara elsevierViewall">The authors declare that no patient data appear in this publication&#46;</p></span></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conflict of interest</span><p id="par0050" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest to the contents of the manuscript&#46;</p></span></span>"
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Article information
ISSN: 21735115
Original language: English
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