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<article article-type="review-article" dtd-version="1.0" xml:lang="HR" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML">
<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">LV</journal-id>
<journal-id journal-id-type="nlm-ta">Lijec Vjesn</journal-id>
<journal-title-group>
<journal-title>Lijecnicki Vjesnik</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Lijec. Vjesn.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="ppub">0024-3477</issn>
<issn pub-type="epub">1849-2177</issn>
<publisher><publisher-name>Croatian Medical Association</publisher-name></publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="publisher-id">LV-142-93</article-id>
<article-id pub-id-type="doi">10.26800/LV-142-3-4-16</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Review</subject></subj-group>
</article-categories>
<title-group>
<article-title>Kompjutorizirana tomografija plu&#x0107;nih komplikacija izvanbolni&#x010D;ke pneumonije</article-title>
<trans-title-group xml:lang="en">
<trans-title>Computed tomography of pulmonary complications of community-acquired pneumonia</trans-title>
</trans-title-group>
</title-group>
<contrib-group>
<contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5856-400X</contrib-id><name><surname>Coce</surname><given-names>Neva</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Giljanovi&#x0107; Jacmenovi&#x0107;</surname><given-names>Silvana</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Filipovi&#x0107;-Gr&#x010D;i&#x0107;</surname><given-names>Luka</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Kuhti&#x0107;</surname><given-names>Ivana</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib>
<aff id="aff1"><label>1</label>Medicinski fakultet Sveu&#x010D;ili&#x0161;ta u Zagrebu, Klini&#x010D;ki bolni&#x010D;ki centar Zagreb, <addr-line>Zagreb</addr-line></aff>
</contrib-group>
<author-notes><corresp id="cor1">Adresa za dopisivanje: Dr. Neva Coce, <ext-link ext-link-type="uri" xlink:href="https://orcid.org/0000-0001-5856-400X">https://orcid.org/0000-0001-5856-400X</ext-link> Dr. A. &#x0160;ercera 84, 10000 Zagreb; e-po&#x0161;ta: <email xlink:href="neva001@gmail.com">neva001@gmail.com</email></corresp></author-notes>
<pub-date pub-type="epub-ppub"><month>05</month><year>2020</year></pub-date>
<volume>142</volume>
<issue>3-4</issue>
<fpage>93</fpage>
<lpage>96</lpage>
<permissions>
<copyright-year>2020</copyright-year>
<copyright-holder>Croatian Medical Association</copyright-holder>
<license xlink:href="http://creativecommons.org/licenses/by-nc-nd/4.0/" specific-use="CC BY-NC-ND 4.0"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (CC BY-NC-ND) 4.0 License.</license-p></license>
</permissions>
<abstract>
<title>SA&#x017D;ETAK</title>
<p>Izvanbolni&#x010D;ka pneumonija (IBP) jest pneumonija ste&#x010D;ena u svakodnevnom &#x017E;ivotu. Uzro&#x010D;nici su bakterije ili virusi, a naj&#x010D;e&#x0161;&#x0107;e se lije&#x010D;i empirijski, budu&#x0107;i da se uzro&#x010D;nik pozitivno identificira u samo 5% slu&#x010D;ajeva. Njezin klini&#x010D;ki tijek mo&#x017E;e varirati od blage do te&#x0161;ke upale, &#x010D;ak i &#x017E;ivotno ugro&#x017E;avaju&#x0107;e. Danas se IBP rutinski dijagnosticira klasi&#x010D;nim rendgenogramom srca i plu&#x0107;a. Kompjutorizirana tomografija (CT) koristi se kao jedna od slikovnih metoda, uz ultrazvuk toraksa, da se utvrde plu&#x0107;ne komplikacije IBP poput pleuralnog izljeva, empijema, pneumotoraksa, pneumatokele i plu&#x0107;nog apscesa. Empijem i izljev se slikovno prezentiraju kao kolekcija teku&#x0107;eg sadr&#x017E;aja u pleuralnom prostoru, a ako se kolekcija nalazi u plu&#x0107;nom parenhimu ome&#x0111;ena debelom stijenkom, radi se o apscesu. Cisti&#x010D;na lezija plu&#x0107;nog parenhima ispunjena zrakom zove se pneumatokela &#x010D;ijom rupturom mo&#x017E;e nastati pneumotoraks, odnosno patolo&#x0161;ko nakupljanje zraka u pleuralnom prostoru. U ovom pregledom &#x010D;lanku predstavit &#x0107;emo slikovni prikaz CT nalaza plu&#x0107;nih komplikacija IBP kod bolesnika s plu&#x0107;nim apscesom, empijemom, pneumotoraksom i pneumatokelom s bronhogenom fistulom.</p>
</abstract>
<trans-abstract xml:lang="en">
<title>SUMMARY</title>
<p>Community-acquired pneumonia (CAP) is a pneumonia acquired in normal, daily life. The causes of CAP are bacteria and viruses, and the treatment is usually empiric since the pathogen is positively identified in only 5% of the cases. Its course can vary from mild to severe and even life-threatening. Today CAP is readily diagnosed by chest radiogram. Computed tomography (CT) and transthoracic ultrasound are used as imaging methods to diagnose pulmonary complications of CAP like pleural effusion, empyema, pneumothorax, pneumatocele and lung abscess. The empyema and effusion are presented as a collection of fluid in the pleural space, and if the collection is located in the pulmonary parenchyma bounded by a thick wall, it is called an abscess. An air-filled cystic lesion of the pulmonary parenchyma is called pneumocele, which can rupture to cause pneumothorax - pathological presence of air in the pleural space. In this review article we present an image series of CT findings of pulmonary complications of CAP in patients with lung abscess, empyema, pneumothorax, and pneumatocele with bronchogenic fistula.</p>
</trans-abstract>
<kwd-group kwd-group-type="author"><kwd>Deskriptori PNEUMONIJA &#x2013; komplikacije</kwd><kwd>IZVANBOLNI&#x010C;KE INFEKCIJE &#x2013; komplikacije</kwd><kwd>PNEUMOTORAKS &#x2013; dijagnosti&#x010D;ki slikovni prikaz, etiologija</kwd><kwd>CISTE &#x2013; dijagnosti&#x010D;ki slikovni prikaz, etiologija</kwd><kwd>PLU&#x0106;NI APSCES &#x2013; dijagnosti&#x010D;ki slikovni prikaz, etiologija</kwd><kwd>PLEURALNI IZLJEV &#x2013; dijagnosti&#x010D;ki slikovni prikaz, etiologija</kwd><kwd>EMPIJEM &#x2013; dijagnosti&#x010D;ki slikovni prikaz, etiologija</kwd><kwd>KOMPJUTORIZIRANA TOMOGRAFIJA</kwd></kwd-group>
<kwd-group kwd-group-type="translator" xml:lang="en"><title>Descriptors </title><kwd>PNEUMONIA &#x2013; complications</kwd><kwd>COMMUNITY-ACQUIRED INFECTIONS &#x2013; complications</kwd><kwd>PNEUMOTHORAX &#x2013; diagnostic imaging, etiology</kwd><kwd>CYSTS &#x2013; diagnostic imaging, etiology</kwd><kwd>LUNG ABSCESS &#x2013; diagnostic imaging, etiology</kwd><kwd>PLEURAL EFFUSION &#x2013; diagnostic imaging, etiology</kwd><kwd>EMPYEMA &#x2013; diagnostic imaging, etiology</kwd><kwd>TOMOGRAPHY, X-RAY COMPUTED</kwd></kwd-group>
</article-meta>
</front>
<body>
<p>Pneumonija se definira kao infekcija donjih di&#x0161;nih putova koja zahva&#x0107;a plu&#x0107;ni parenhim. Danas je klasificiramo kao izvanbolni&#x010D;ku pneumoniju, pneumoniju ste&#x010D;enu u bolni&#x010D;kim uvjetima ili nozokomijalnu pneumoniju i oportunisti&#x010D;ku pneumoniju kod imunokompromitiranih pacijenata. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>) Uzro&#x010D;nici izvanbolni&#x010D;ke pneumonije (IBP) mogu biti bakterije poput <italic>Pneumococca, Klebsielle, Legionelle, Mycoplasme, Haemophilus influence</italic> ili virusni poput <italic>adenovirusa</italic> ili <italic>respiratornog sincicijskog virusa</italic>. Protozoe i gljive gotovo nikad ne uzrokuju IBP. (<xref ref-type="bibr" rid="r2"><italic>2</italic></xref>) Lije&#x010D;i se empirijski antibioticima jer se uzro&#x010D;nik pozitivno identificira u svega 5% slu&#x010D;ajeva. (<xref ref-type="bibr" rid="r3"><italic>3</italic></xref>) Njezin tijek varira od blagog do te&#x0161;kog, ponekad &#x010D;ak i sa smrtnim ishodom, a od plu&#x0107;nih komplikacija IBP-a izdvajaju se plu&#x0107;ni apsces, pleuralni izljev, empijem, apscediraju&#x0107;a pneumonija, pneumotoraks, pneumatokela te bronhogena fistula. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Danas je metoda izbora za dijagnozu i pra&#x0107;enje tijeka pneumonije klasi&#x010D;ni rendgenogram srca i plu&#x0107;a (RTG), dok se kompjutorizirana tomografija (CT) kao i ultrazvuk (UZV) toraksa koriste u slu&#x010D;ajevima gdje se pneumonija nije mogla sigurno vizualizirati rendgenom ili za pra&#x0107;enje njezinih komplikacija. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>)</p>
<p>U sljede&#x0107;im redcima prezentirat &#x0107;e se CT snimke komplikacija IBP-a poput apscesa, empijema, pneumotoraksa i pneumatokele s bronhogenom fistulom.</p>
<sec sec-type="other1">
<title>Plu&#x0107;ni apsces</title>
<p>Plu&#x0107;ni apsces (<xref ref-type="fig" rid="f1">Figure 1</xref>) definira se kao o&#x0161;tro ograni&#x010D;ena zona nekroze plu&#x0107;nog parenhima ispunjena gnojnim sadr&#x017E;ajem. (<xref ref-type="bibr" rid="r5"><italic>5</italic></xref>, <xref ref-type="bibr" rid="r6"><italic>6</italic></xref>) Naj&#x010D;e&#x0161;&#x0107;e je uzrokovan polimikrobnom infekcijom anaerobima ili fakultativnim anaerobima, a s obzirom na du&#x017E;inu trajanja simptoma dijelimo ga na akutni i kroni&#x010D;ni. Prezentira se indolentnim simptomima koji progrediraju protokom vremena i naj&#x010D;e&#x0161;&#x0107;e uklju&#x010D;uju povi&#x0161;enu temperaturu, produktivni ka&#x0161;alj, no&#x0107;no znojenje, gubitak na te&#x017E;ini i anemiju. (<xref ref-type="bibr" rid="r5"><italic>5</italic></xref>)</p>
<fig id="f1" position="float" fig-type="figure"><label>Figure 1</label><caption><p>Axial view of the pulmonary abscess of the upper right lobe, measuring 6.5 cm in diameter a) and its coronal reconstruction b). The abscess is presented as a sharply demarcated lesion with thickened wall, filled with an air-fluid level.</p></caption><graphic xlink:href="LV-142-93-f1"></graphic></fig>
<p>Iako se mo&#x017E;e dijagnosticirati klasi&#x010D;nim rendgenom kao o&#x0161;tro ograni&#x010D;ena i kavitiraju&#x0107;a lezija plu&#x0107;nog parenhima, za postavljanje to&#x010D;ne dijagnoze i precizne lokalizacije naj&#x010D;e&#x0161;&#x0107;e koristimo CT. Kompjutorizirana tomografija pogotovo nam je zna&#x010D;ajna u diferencijalnoj dijagnozi, gdje &#x0107;e se na CT-u apsces tip&#x010D;no prezentirati kao ovalna tvorba debele stijenke koja mo&#x017E;e sadr&#x017E;avati samo teku&#x0107;inu ili aerolikvidnu razinu, za razliku od empijema s aerolikvidnom razinom koji nema debelu stijenku i drugih neinfektivnih stanja koja se morfolo&#x0161;ki sli&#x010D;no prezentiraju poput granuloma kod vaskulitisa, kavitiraju&#x0107;ih malignoma ili aspiracije stranog tijela, ali pokazuju dodatne CT karakteristike. (<xref ref-type="bibr" rid="r7"><italic>7</italic></xref>-<xref ref-type="bibr" rid="r9"><italic>9</italic></xref>)</p>
<p>Plu&#x0107;ni apsces lije&#x010D;i se posturalnom drena&#x017E;om i antibioticima, dok se apsces promjera ve&#x0107;eg od 4 cm ote&#x017E;ano lije&#x010D;i medikamentno i ima ve&#x0107;i mortalitet neovisno o lije&#x010D;enju. (<xref ref-type="bibr" rid="r9"><italic>9</italic></xref>)</p>
</sec>
<sec sec-type="other2">
<title>Pleuralni izljev i empijem</title>
<p>Pleuralni izljev je nakupljanje teku&#x0107;ine u pleuralnom prostoru. Pleuralni izljev se mo&#x017E;e nakupljati u bolesnika s pneumonijom kao rezultat poja&#x010D;ane permeabilnosti uslijed same upale te se u tom slu&#x010D;aju naj&#x010D;e&#x0161;&#x0107;e radi o eksudatu. Kada izljev sadr&#x017E;i infektivne organizme i upalne stanice ka&#x017E;emo da se radi o empijemu (<xref ref-type="fig" rid="f2">Figure 2</xref>) ili &#x2013; kako se jo&#x0161; naziva &#x2013; piotoraksu. (<xref ref-type="bibr" rid="r10"><italic>10</italic></xref>, <xref ref-type="bibr" rid="r11"><italic>11</italic></xref>)</p>
<fig id="f2" position="float" fig-type="figure"><label>Figure 2</label><caption><p>Axial a) and coronal b) images of pleural effusion of denser fluid content of the right lung, corresponding to empyema with characteristic split pleura sign. In addition to empyema, an inflammatory infiltrate of the parenchyma is also seen.</p></caption><graphic xlink:href="LV-142-93-f2"></graphic></fig>
<p>Empijem je potencijalno &#x017E;ivotno ugro&#x017E;avaju&#x0107;e stanje i zahtijeva brzu dijagnozu i terapiju.</p>
<p>Prisutnost inokuliranog plina u kolekciji gustog sadr&#x017E;aja unutar pleuralnog prostora sa zadebljanom i razdvojenom visceralnom i parijetalnom pleurom (engl. <italic>split pleura sign</italic>) upu&#x0107;uje na empijem, &#x0161;to se mo&#x017E;e vidjeti na CT-u. (<xref ref-type="bibr" rid="r7"><italic>7</italic></xref>)</p>
<p>Zbrinjavanje empijema uklju&#x010D;uje perkutanu drena&#x017E;u toraksa i intravensko davanje antibiotika. (<xref ref-type="bibr" rid="r8"><italic>8</italic></xref>)</p>
</sec>
<sec sec-type="other3">
<title>Pneumatokela i pneumotoraks</title>
<p>Pneumatokela (<xref ref-type="fig" rid="f3">Figure 3</xref>) je cisti&#x010D;na lezija plu&#x0107;nog parenhima ispunjena zrakom koja nastaje mehanizmom nepovratne valvule kada, uslijed ozljede ili nekroze plu&#x0107;nog parenhima, zrak u&#x0111;e u intersticijski prostor plu&#x0107;a. (<xref ref-type="bibr" rid="r12"><italic>12</italic></xref>)</p>
<fig id="f3" position="float" fig-type="figure"><label>Figure 3</label><caption><p>Large pneumatocele with bronchogenic fistula of the left lung formed after resolution of abscessed pneumonia. The smaller pneumatocele of the right apex is also visible in coronal view a) and sagittal reconstruction b).</p></caption><graphic xlink:href="LV-142-93-f3"></graphic></fig>
<p>Osim kao komplikacija pneumonije, pneumatokela mo&#x017E;e nastati i kao komplikacija kroni&#x010D;ne opstrukivne bolesti plu&#x0107;a, traume prsnog ko&#x0161;a i kod aspiracije hidroklorida. (<xref ref-type="bibr" rid="r13"><italic>13</italic></xref>)</p>
<p>Ve&#x0107;ina pneumatokela ipak ne uzrokuje ozbiljne simptome te se povuku kad se izlije&#x010D;i osnovni proces koji je uzrokovao njihov nastanak. (<xref ref-type="bibr" rid="r14"><italic>14</italic></xref>)</p>
<p>Me&#x0111;utim, ruptura pneumokele mo&#x017E;e dovesti do pneumotoraksa (<xref ref-type="fig" rid="f4">Figure 4</xref>), odnosno patolo&#x0161;kog nakupljanja zraka u pleuralnom prostoru i posljedi&#x010D;nog respiratornog distresa koji, ako se ne lije&#x010D;i, potencijalno zavr&#x0161;ava smr&#x0107;u. (<xref ref-type="bibr" rid="r12"><italic>12</italic></xref>)</p>
<fig id="f4" position="float" fig-type="figure"><label>Figure 4</label><caption><p>Pneumothorax of the right thorax with visible percutaneous thoracic drainage and adjacent inflammatory parenchyma infiltration. Axial view a) and coronal view b).</p></caption><graphic xlink:href="LV-142-93-f4"></graphic></fig>
<p>U tom slu&#x010D;aju terapija je &#x017E;urna perkutana drena&#x017E;a prsi&#x0161;ta uvo&#x0111;enjem torakalnog drena.</p>
</sec>
<sec sec-type="other4">
<title>Rasprava</title>
<p>Izvanbolni&#x010D;ka pneumonija je me&#x0111;u naj&#x010D;e&#x0161;&#x0107;im uzrocima morbiditeta i mortaliteta kod odraslih i djece, kako u zemljama tre&#x0107;eg svijeta, tako sve vi&#x0161;e i u razvijenim zemljama.</p>
<p>Kompjutorizirana tomografija &#x010D;esto je potrebna u slu&#x010D;ajevima kada se pneumonija nije mogla sigurno dokazati klasi&#x010D;nim rendgenom, odnosno za pra&#x0107;enje njezinih komplikacija.</p>
<p>Od plu&#x0107;nih komplikacija IBP-a (kako navode Cilloniz, et al.) naj&#x010D;e&#x0161;&#x0107;i je pleuralni izljev (52%), zatim empijem (18%), dok 20% bolesnika ima vi&#x0161;e od jedne plu&#x0107;ne komplikacije. (<xref ref-type="bibr" rid="r15"><italic>15</italic></xref>)</p>
<p>Poznavaju&#x0107;i &#x010D;injenicu da se pneumonija ipak naj&#x010D;e&#x0161;&#x0107;e dijagnosticira klasi&#x010D;nim rendgenom koji se ponovno u&#x010D;ini 4&#x2013;6 tjedana po zavr&#x0161;etku terapije u smislu kontrole te da kontrolni rendgen nerijetko izostaje ako je odgovor na terapiju bio povoljan, postavlja se pitanje: promaknu li nam ipak neke od komplikacija?</p>
<p>Plu&#x0107;ne komplikacije IBP-a mogu biti ozbiljne i potencijalno &#x017E;ivotno ugro&#x017E;avaju&#x0107;e te pridonose visokoj stopi hospitalizacije bolesnika, pogotovo onih starije dobi. Tako&#x0111;er pridonose ukupnom mortalitetu; danas je smrtnost od IBP-a me&#x0111;u prvih pet globalnih uzroka smrtnosti. (<xref ref-type="bibr" rid="r16"><italic>16</italic></xref>)</p>
</sec>
</body>
<back>
<ack>
<title>Zahvala</title>
<p>Autori &#x017E;ele zahvaliti Ani Coce, dipl. ing. arh., na intelektualnoj i tehni&#x010D;koj podr&#x0161;ci.</p>
</ack>
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